ROC L6 L8 SystemDescriptionBosal

8/17/2019 ROC L6 L8 SystemDescriptionBosal

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ROC L7 , L7 CR, L8 , L6 with Bosal cabin

40 40 30 30



Subject Content Tab

ROC L Hydraulics, general 1

Electrics, general 2

Operating 3

CAN general 4

Diesel engine 5

Pumps & pilot pressure; Cooling fans 6

Tramming; Positioning 7

Compressor8

Pre-heating 9

Feed 10

Rotation 11

Rapid feed; Rod coupling 12

Impact & Flushing air; ECL/HECL 13

Damper 14

DCT 15

Protective functions 16



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Hydraulic system, general


General – L7 40 , L7 40CRThe hydraulic system of the ROC L7 40 and L7 40CR is an electrical and pilot pressurecontrolled system, with 6 hydraulic pumps. Hydraulic pumps 1, 2, 3 and 4 are in-lineassembled and direct driven by the diesel engine over a flexible coupling.The hydraulic pumps 5 and 6 are combined to a double pump with a common suction line.They are driven by the diesel engines extra power-take-off.

The pressure on these pumps is regulated with fixed or variable pressure relief valves. Pump 1is an axial piston pump with variable displacement. During drilling pump 1 is regulated by thepressure relief valves for high/low percussion. During tramming pump 1 is connected to twoflow sharing compensated directional control valves. The pump pressure is controlled bywhichever load there is on the tramming motors.

Rapidfeed

RotationPreheating

Drillfeed

Main valve blockLogicValves

Impact

Postioning during trammingExtra oil to rotation

3

Tramming control via PLC

Electrical valves:Drilling

Tractionleft

Tractionright

1

PressureControl

2

Dust Collector

5 64

RodHandling

GaugesPanel &

Extra oil only when drilling

Postioning

during drilling

Cooler motorEngine water/ATAC

Cooler motorCompressor/Hydraulic oil

9

RPCF

L7 , L7 CR




General – L8 30 The hydraulic system of the ROC L8 30 is an electrical and pilot pressure controlled system,with 6 hydraulic pumps. Hydraulic pumps 1, 2, 3 and 4 are in-line assembled and directdriven by the diesel engine over a flexible coupling.The hydraulic pumps 5 and 6 are combined to a double pump with a common suction line.They are driven by the diesel engines extra power-take-off.The pressure on these pumps is regulated with fixed or variable pressure relief valves. Pump 1is an axial piston pump with variable displacement. During drilling pump 1 operates on

constant pressure. During tramming pump 1 is connected to two flow sharing compensateddirectional control valves. The pump pressure is controlled by whichever load there is on thetramming motors.

Rapidfeed

RotationPreheating

Drillfeed

Main valve blockLogicValves

Cooler motorCompressor/Hydraulic oil

3

Tramming control via PLC

Electrical valves:Drilling

Tractionleft

Tractionright

1

PressureControl

2

Dust Collector

5 64

Cooler motorEngine water/ATAC

Rodhandling

GaugesPanel &

Extra oil only when drilling

Extra oil to rotationPostioning during tramming

Postioningduring drilling

9

L8




Hydraulic pumps

Figure: Test connections for checking the hydraulic circuits.

Pump 1The main pump 1 in the hydraulic system is an axial piston pump.The pump supplies hydraulic power to the following functions:

L7 40 L7 40CR L8 30 • Rock drill impact • Rock drill feed • Rock drill damper • Rock drill stroke position • Positioning • Rod handling• Tramming •

Pilot pressure • Hydraulic jack • Service winch • Track oscillation

• Rock drill impact • Rock drill feed • Rock drill damper • Rock drill stroke position • Positioning • Rod handling• Tramming •

Pilot pressure • Hydraulic jack • Service winch • Track oscillation

• Rock drill feed • Positioning • Rod handling• Tramming • Pilot pressure • Hydraulic jack • Service winch •

Track oscillation

Pump 2 3 and 4

L7 40 L7 CR, L8




Pump capacitiesRig type L7 40 L7 40CR L8 30 Rpm @ 2000 rpm engine speed @ 2000 rpm engine speed @ 1800 rpm engine speed

Flow(l/min) P (bar, max.) Flow(l/min) P (bar, max.) Flow(l/min) P (bar, max.)Pump 1Pump 2Pump 3Pump 4Pump 5Pump 6

275115653530/*4530/*45

250170170250210/*225210/*225

260115653530/*4530/*45

250170170250190/*225190/*225

235110654032/*4532/*45

250170170250190/*225190/*225

*Higher figure refer to the 55 °C ambient temperature option.

Pilot pressureThe pilot pressure signals from the drill lever are transferred to the main valve block and tothe pressure control panel via logic valves. The pressure gauge panel shows the impactpressure, feed pressure and rotation pressure in the main valve block. The pressure control

panel controls the working pressure of pump 1 (only in L740

& L740

CR), feed and the rotationfunctions in the main valve block. The gauges & panel are located in the cab for easy use.

The tramming controls are mounted close to the operator’s seat, and control the maintramming valves proportionally.

Return oil and oil coolerThe hydraulic oil tank has a capacity of 410 litres, which means there is often a “stock” ofoil in the tank. There are two return-/drain oil filters that filter the hydraulic oil from thereturn- and drain circuits and oil used to fill the system. There is also a breather filter thatprevents contaminated air entering the tank when the level of hydraulic oil fluctuates. Thethermostats ensure that the oil flows through the oil cooler when the temperature is above40ºC and directly to the tank when the temperature is below 40ºC. The by-pass valve protectsthe oil cooler from exposing to high pressure.

The oil cooler cools the hydraulic oil so that the rig can work at full load in ambienttemperatures up to 55°C (optional). The cooling fan is driven by a fan motor that is suppliedwith oil by pump 5. The pressure to the fan motor is controlled by a proportional pressurerelief valve. The control system regulates the pressure, and thereby the fan speed dependingon the cooling demands.




The temperature sensor (B362 ) senses the hydraulic oil temperature and the temperature

will be shown on the display. The engine will shut down automatically if the hydraulic oiltemperature exceeds 90ºC . The sensor signal from B362 goes via PLC input X16-5 .

The drain cock is used to remove water of condensation or to empty the hydraulic oil tank.



1

Hydraulic system L7TH, CR

Hydraulic system L8



Electrical system, general


GeneralROC L7 40 , L7 40CR, L8 30 are equipped with a 24-volt electrical system for monitoring andfault indication, electric power is also used for controlling a number of hydraulic andpneumatic valves. The composition of the electrical system is illustrated in the block diagram.

Battery charging

Power supply to the electrical system consists of two, serie-connected 12 volt / 185 Ahbatteries. These are charged by a 3-phase A/C alternator. The batteries are connected to thesystem by a manually operated battery switch.

Main fuseThe feed to the electrical cabinet is fused by a 63 A main fuse (F100).

Electrical cabinetThe electrical cabinet A1 contains 34 ATO fuses (when all options are included) that limit thecurrent intensity to the different sub-circuits, two auxiliary relays (K18, K178) to handle largecurrents above 4 Amp, stop relay for the emergency stop circuit (K11), remote shutdownrelay (K200), start relay (K5A), main fuse and a PLC (CPU1-3).

ECM (Caterpillar)Electronic Control Module is used for monitoring the engine’s functions and sensors. Itreceives analogue and digital information from the engine. The information is processed andtransferred in J1939 protocol. The ECM stops the diesel engine automatically if a specificfault occurs. A specific fault is for example low oil pressure which could cause major damageto the engine.




Electrical supply

Ignitionposition

Startposition

CAN nodes

D550,551, 552, 553, 554

K11

K5A

E-stops

M1starter motor

ECM

Startengine

Radio, cabinlights, utility light

PLC

outputs &relays

One of theconditions toactivate K5A

5 0

c i r

c u

i t

2 5

c i r

c u

i t

15 circuit

PLC

processor& sensorinputs




The power source consists of two 12V/185Ah batteries connected in series and an alternator.

Before the main switch is switched on, there is power to the diesel fire heater & timer.When the main switch is switched on, there is power supply to the radio, cabin lights, utilitylights and ECM (48,52,53) thorough teminals 10 and 25. Power is also supplied to the startermotor switch, but the switch is triggered by the starter motor relay via PLC.

When the key is in the ignition position power is supplied to the emergency stop circuit,CAN nodes, display, PLC processor and its sensor inputs through terminal 15. If theemergency stops are intact, relay K11 is activated. Power is now supplied to the ECM (70),PLC outputs and relays, working lights/wiper, seat heating and the climate system in the cabinthrough terminal 50.

When the key is in the start position the diesel engine is started via starter motor M1 , andstarter motor is powered by relay K5A . K5A is activated if the conditions for starter motor arefulfilled.

ECM is supplied with power both before and after ignition. The difference is, before ignition,ECM is powered to boot its memory, but its monitoring functions are not started at this level.Only after the key is in the ignition position, ECM starts working properly.

If any of the emergency stops is activated, it will deactivate switch K11 , causing all thefunctions at the ignition level except the CAN nodes, display and CPU processor & sensorinputs to be without power, since they are connected parallel with the emergency stop circuit.Turn the key back to 0 position before re-start.

Note : The electrical system’s ground cables are not isolated by the main switch. This meansthat the system consumes a small current even when no functions are activated.



2

Electrical system, overview

MAIN ELECTRICAL CABINET

Main fuse ATO-fuses

BatteriesMain battery

switch

M12-boxes

Inputs

PLCProgrammable logic control

Outputs

SensorCompressor

SensorHyd. oil level

SensorsRod handling

SensorHyd. oil temp

SensorAir filters

Hyd. valvesRod handling

Hyd. valvesFeed

Hyd. valvesAnti-jamming

Air valvesImpact/Fl. air Dust collector

ECL&(HECL)Pumps

Drilling panel (right)

Pre-heating

Switches SwitchesTramming

Enginespeed

Trackoscillation

Compressorload

Drilling panel (left)

Flush air

SwitchesDust collector

Drill steelsupport

SwitchesTramming

Joy-stickRod handling

Break outtable

Suctionhood

ECMCat Electronic Control Module

SensorsDiesel engineEngine stop

Ignition keyStart motor

Drill lever

CPU 1-3 Cabinmodules



3

Electrical cabinet X1

Terminal 50

See page 7

Refer to page6 coordinates3E



4

3

E

Frompreviouspage:coordinates3E, page 6

Contact



5

Indicator card no.

Terminal 8

1

2

Distribution box X36,Contact 7, signal 2 (S2)



6

2

1



7

Electrical cabinet



14

Overview – rig right side



15

Overview – rig left side



1

Operating Cabin heat and AC

1. Working lights cab, front2. Working lights rig, rear3. Working lights feeder

4. Lighting engine c ompartment5. Windscreen washer, upper

6. Windscreen wiper, upper increases speed in steps.7. Windscreen wiper, upper reduces speed in steps. Switch off

by depressing and holding the button for 2 seconds.8. Front windscreen washers

9. Windscreen wiper, front reduces speed in steps. Switch off bydepressing and holding the button for 2 seconds.

10. Windscreen wiper, front increases speed in steps.11. Windscreen wiper, right reduces speed in steps. Switch off

by depressing and holding the button for 2 seconds.12. Windscreen wiper, right increases speed in steps.

13. Windscreen washer, right14. Seat heating in two steps

15. Air condition16. Fan, air conditioning reduces speed in steps.

17. Fan, air conditioning increases speed in steps.

18. Temperature reduces the temperature.19. Temperature increases the temperature.

20. Fan, heater increases speed in steps.21. Fan, heater reduces speed in steps.

22. Not used23. Not used

Operating

ROC L7 40



3

Operating

ROC L7 40CR

Operating

ROC L8 30



5

Operating Drill control panel

S139 Ignition keyS130 Switch for drilling/tramming/oil heating

S170 Not used on ROC LS448 Water mist.S209 Support leg.S186 Signal horn

S449 Thread greasing.S176 Track oscillation, (left).

S445 Track oscillation (locking).S177 Track oscillation, (right).

S180 Compressor.S189 Rpm control (variable).

S130

a: Drillingb: Tramming low speedc: Tramming high speed

d: Oil pre-heating.

Operating



7

Operating

Operating



9

Operating

1. Drill feed pressure2. Flushing air pressure

3. Rock drill lubrication pressure,ECL(L7), HECL (L6, L8)4. Return pressure filter

5. Rotation pressure6. Percussion pressure

7. Damper pressure

Operating



CAN, general

CAN, generalThis is an overview of the CAN communicationnetwork. If communication is down in any ofthe units, the unit will show in red, and awarning for communication breakdown will beshown on the status bar.

CANThere are various types of control modules (PLC, ECM, main display, CAN nodes etc.).Common to all of these is that they each contain a separate processor. The modulescommunicate with each other over a CAN bus. The CAN bus uses serial communication. Onepiece of data at a time is sent over the bus until allthe data has been transmitted. This is a simplemethod that requires only 4 conductors (CAN+,CAN-, CAN high, CAN low) and a screen. TheCAN network is supplied with 24 V, and the CANhigh / low signal lies at approximately 2.6 V and2.4 V respectively.

Display D501All CAN data is handled by the display shown graphically or digitally. The program for theHEC (Hole/Engine Control) system is stored in the display and the software is downloadedvia a PC or a USB-flash drive (see installation instructions in a separate section).

The display shows engine data, angle/hole information and the status of switches/sensors, etc.CPU2 receives the information sent from ECM in J1939 protocol and translates this toCANopen protocol, which is then shown on the display. Other information is sent directlyfrom the CPUs, CAN nodes, D169 module and D171 module to the display by usingCANopen protocol.

PLCThe PLC system consists of three CPU units (CPU1 CPU2 CPU3) They are each



CAN, general

CAN nodes

The CAN nodes (D550, D551, D552, D553, D554) translate all the input signals for all theswitches located on the operating panels; also the output signals for all the leds and magnetslocated in the drill lever, so the modules can communicate in CAN “high”/“low” signalsdirectly. Every input/output on the CAN nodes each has its own led. The led will light inconstant yellow when their corresponding input/output is activated.

There are also two CAN communication leds on every CAN node, one lights in green and theother one lights in red. A green stable signal indicates the CAN node is in its preoperationalmode; a green blinking signal indicates that the CAN node is in operation, but both signalscan not indicate whether the CAN node is correctly installed to match the CAN Node IDnumber shown in the display. The CAN node ID number has to be set manually on themodule when installed. When a communication fault occurs during operation, the red led willbe activated.

ECM

CAT’s engine control module that controls engine operation.

D169/D171/D173 ModuleD169 module is a CAN-based aiming device that communicates with the display directly.D171 module is a CAN-based angle sensor that communicates with the display directly.D173 module (option) is a CAN-based GPS compass that communicates with the displaydirectly.

Terminal plugAt the start and end of the CAN network there are terminal plugs installed. A terminal plugconsists of a resistor (120 Ω ) which terminates the network’s both ends in the correct way sothat the signal does not “bounce back to the system”. There are 4 terminal plugs installed inthe CAN network (see figure below).



CAN, general

CAN system overview

Ignition

J1939

D169

D173option

D171

End plug

CAN +/-CAN H/L

X1

X3

X2

End plugX4

X5 X6

ESC

F1

F2

F3

F4

RIG CONTROL SYSTEM

D501

D552

D553

D551

D550

D554

X7

1 5

c i r

c u

i t

F23

1 5

c i r

c u

i t



CAN, general

Sensor/switch monitoring system

The CAN system can present switch and sensor status on the display screen. The analoguesensors are connected via the CPUs, except potentiometer R189 (adjusting engine revolution)is connected via the CAN node and the coolant water level sensor B361 is connected directlyto the ECM, though sensor B361 is powered from external power source (M12 box X34:8).

The digital (ON/OFF) switches are connected via the CAN nodes, and the digital sensors areconnected via the CPUs, except sensor B379 (operator in chair) is connected via CAN node.

By selecting a module with the curse on the screen, and press the enter button, status of eachmodule could be checked (in the event of a red module).

By selecting in/outputs for the CPUs or the CAN nodes modules on the screen, status for allinputs and outputs could be checked in the system. An actuated function is displayed as “1”while and un-actuated function is displayed as “0”.

Note that for an input, “0” or “1” is the status that is received by the CPUs; while “0” and “1”for an output is the signal sent from the CPUs. I.e. there is not any confirmation that the signalactually is received by the valve, etc. Broken cables are not noticed by the system.



Control panel

Control panelThe control panel is comprised of a touch panel user interface and a powerboard for function actuation.

Before ignition, the power board is powered with 24 V via fuse F25, thebutton for light in engine compartment and the indication lamp for batterystart to blink in green.

After ignition, the power board is powered with 24 V via fuses F4, F5 andF10, and the power board is lit up in white.

A CAN cable is used as the communication media between the power boardto the touch panel; also used to power up the touch panel. This CANnetwork exists as a separate circuit, aside from the CAN network mentionedin the chapter before.



Diesel engine

Diesel engine

The engine on ROC L740

, L740

CR is a turbocharged, water cooled C13 diesel engine fromCaterpillar. Rated power at 2000 rpm is 328 kW.The engine on L8 30 is a turbocharged, water cooled C15 diesel engine from Caterpillar. Ratedpower at 2000 rpm is 402 kW.

Battery switch, OFFThe diesel fire heater and the timer are connected before the battery switch S300 via fusesF02 and F03 . The generator G2 (B+) is connected directly to the batteries.

Battery switch, ONWhen the battery switch S300 is switched on there is 24V to:• Utility lights in engine compartment, cabin

lights, instrumental lights, radio and cellphone outlets via fuse F25 , F26 in A1cabinet.

• ECM is also powered via fuse F25 , but thecommunication between ECM and rest ofthe system has not yet started.

Ignition positionWhen the ignition key S139 is in the ignition position the contacts 30-15 and 30-75 are

closed. The ignition relay K11 is activated and the relay contacts are closed under theconditions that the emergency stops are intact.

Before the K11 relay contacts are closed, the display and the emergency stop circuit aresupplied with voltage via fuse F25 . PLC processor and sensor inputs are supplied withvoltage via fuse F14 ; CAN nodes are supplied with voltage via fuse F23 .

When the K11 relay contacts are closed, the ECM is supplied with voltage via fuse F13 , ECMis now functional. PLC outputs and relays are supplied with voltage via F15-F22 .

ROCS300 S300

ON OFF



Diesel engine

Start position

Conditions for activation of starter motor:• Emergency stops S132A and S132B not activated => PLC input X10-8/ON • Fuses F100 , F3 , F13 , F14 , F15 , F23 are intact.• S130 in tramming mode => D552-CH2 or CH3/ON • Compressor switch S180 OFF => D552-CH9/OFF • Ignition key S139 in start position => D550-CH4/ON • Only for L8 30 : Start preventing pressure sensor B336 OFF => PLC input X13-4/OFF

When all the above conditions are met, this will result in:• Start relay K5A is activated and the relay contact is closed, hence activating starter motor M1 ,

i.e. engine is cranking.

Conditions for starting the diesel engine:• Compressor temperature B366 < 120°C (~17.5mA).• Hydraulic oil level sensor B143 activated, which indicates the oil level is normal.• Hydraulic oil temperature B362 < 90°C (~15mA). If the conditions above are fulfilled:• K200 activated, enables engine start.

When the ignition key S139 is turned to the start position and the engine fails to start, checkwhich symbol(s) are displayed and rectify the fault. Turn the key back to position 0 beforetrying again.

ECM overviewECM is functional when the battery isswitched (1) and the ignition key is position(2). To start the diesel engine, K200 has to beactivated (3) so ECM 44 is not grounded(refer to page 15 for more information onautomatic engine shut-down), and theCaterpillar sensors (4) must be workingnormally.

Loss of condition 3 and 4 automatically shutsdown the engine.

PLC

ECM

2 3

e-stop

keyS139

Remote shut down

Ignition key switched

Battery ON

(ECM 44)

K200

Di l i



Diesel engine

Engine speed

The engine speed can be de- or increased by flicking switch S189 up- or downwards. Digital signal is sent directly into the CANnode D554, then to CPU2 through CAN open protocol, and at lastsent to the ECM through J1939 protocol.

CPU2 can support 7 engine revolutions, and it can store 3 separateengine speeds, one for tramming, one for rod handling and one fordrilling. CPU2 remembers the engine speeds for rod handing and

drilling even when the battery switch is turned off. In trammingmode the system will always start at 1200 rpm. The speeds can allbe set individually within the range specified below.

Condition for revolution between 1200-2000 Tramming modeSwitch S130 NOT in drilling position

Condition for revolution between 1500-2000 RHS modeSwitch S130 in drilling position and reduced flushing air NOT activated (Y116/OFF)

Condition for revolution between 1700-2000 Drill modeSwitch S130 in drilling position and reduced flushing air activated (Y116/ON)

The engine starts on idling speed 1200 rpm, flicking the switch once upwards should increasethe speed to 1500 rpm, then the engine speed increases with 100 rpm per flick upwards until it

reaches the maximum speed of 2000 rpm. It is also possible to hold the switch for severalseconds in order to reach the maximum speed. To decrease the engine speed from the idlingspeed, flick the switch once downwards takes down the speed step by step just like upwards.When changing from tramming position to drilling, the engine speed automatically increasesto engine speed set for drilling and vice versa.

a

b

c

ab c

d

Di l gi



Diesel engine

Control instrumentation

The ECM controls and monitors all engine data and diagnostic information from the dieselengine. This information is sent via CPU2 to the display, where all the necessary engineinformation is presented. CPU2 also translates the information from J1939 to CAN open so itcan be presented on the display.

Signals from the rig sensors are sent via the CPUs directly to the display, where informationcan be viewed. (See figure)

A red warning lamp on the status bar meansthat the problem is critical, and the enginewill be shut automatically. A yellow warninglamp means the engine needs to be switchedoff manually, and the fault needs to bechecked and rectified. Refer to “Switchesand sensors that automatically and manuallystop the diesel engine” for a list of sensorsthat automatically and manually shut downthe engine.

Engine monitoring A number of sensors and switches on the engine do not generate warnings on the status bar inthe event of a fault. A direct code system has been introduced, this allows you to go directly

to the CAT fault diagnosis table to interpret the codes. The table will only present informationwhen a fault arises. The ECM or the engine sensor symbol on the status bars indicates that afault has been detected. This can be found in the menu for ECM sensors. The fault isdisplayed as a 3 digit SPN code and 2 digit FMI code. (See figure)

Status bar

Diesel engine



Diesel engine

Switches and sensors that automatically and manually stop the dieselengineAutomatically stopping (or shutting down) the diesel engine does not mean that the wholesystem also goes off. All functions at the key ignition level are still working. To shut downthe whole system including the display, turn the key back to the 0 position.

Manual:

• Start key (S139) • Emergency stop (S132A, S132B)

Automatic:

These are indicated by a red lamp on the status bar and switch the engine off automatically.

• Hydraulic oil level (B143)

The level switch sends a signal to PLC input X11-8 when the level is normal. If the level isbelow normal, the loss of X11-8 will result in a loss of PLC output X11-3 which is connectedto relay K200 . ECM 44 gets grounded and shuts down the engine.

• Hydraulic oil temperature (B362)The temperature sensor sends a signal to PLC input X16-5. If the temperature has reached80°C, a yellow warning is shown first, and if the temperature has reached 90°C, this willresult in a loss of PLC output X11-3 which is connected to relay K200 . ECM 44 getsgrounded and shuts down the engine.

• Compressor temperature (B366)The temperature sensor sends a signal to PLC input X16-7 and PLC input X16-6 (for DTHrigs). If the temperature has reached 117°C, a yellow warning is shown first, and if thetemperature has reached 120°C, this will result in a loss of PLC output X11-3 which isconnected to relay K200 . ECM 44 gets grounded and shuts down the engine.

• Engine oil pressure (B353)The engine oil pressure sensor is part of the Caterpillar system and connected to the ECM.Should abnormal pressure occur, the ECM shuts the engine down and a warning is shown onthe status bar.

Diesel engine



Diesel engine

Switches and sensors that only indicate a fault•

Compressor air filter (B365)Connected to PLC input X13-8.

• Engine air filter (B360)Connected to PLC input X13-7.

• Fuel temperatureThe engine fuel temperature sensor is part of the Capterpillar system and connected to theECM. Should the fuel temperature reach 80°C, a warning is shown on the status bar.

• Battery voltageShould the battery voltage fall below 24 V, a warning is shown on the status bar.

• Air inlet temperatureThe inlet air temperature sensor is part of the Caterpillar system and connected to the ECM.

Should the temperature reach 75°C, a warning is shown on the status bar.

Diesel engine



Diesel engine

Warning symbol related to the engine

Symbols AC designation Description Yellow sign stage Red sign stage

B353 Engine oil pressure Too low pressure

B361 Engine water level Too low level

B143 Hydraulic oil level Too low level

B354 Engine coolanttemperature

105°C

B366 Compressor

temperature

117°C 120°C

B362 Hydraulic oiltemperature

80°C 90°C

B360 Engine air filter Plugged filter

B365 Compressor air filter Plugged filter

Fuel temperature 80°C

Battery voltage < 24 V

Air inlet temperature 75°C



1

Main switch OFF

S300



2

Main switch ON 1



3

Utility light

Radio24 V outlet

Cabin control panel

Main switch ON 2



4

+ battery(unswitched)

Main switch ON 3



5

Key in ignition pos. 1

Main switch on/25 circuitKey in ignition pos.but before emergency stops/15 circuitGround connection

K11

To D550

To M1



6

Main switch on/25 circuitKey in ignition pos./50 circuitGround connection

F100




7


Cabincontrolpanel




8

+ battery(switched)+ battery

(unswitched)

Main switch on/25 circuitKey in ignition pos./50 circuitGround connection Key in ignition pos. 4

S139



9

Starter motor conditions 1

Main switch on/25 circuitKey in ignition pos.but before emergency stops/15 circuitKey in start pos.Ground connection

S132A S132B

Basic conditions on fuses:Fuses F100 , F3 , F13 , F14 , F15 , F23 are intact.



10

S130CH2 or CH3

24V input


S180



11

24V input

CH9 OFF


L830 only

24V input

B336X13-4 OFF



12

24V outputGround connection

K5

K5 needs to be activated in order to activate cranking.




13


K5

From F2,page 4

M1 Engine cranking


B143



14

Engine start condition

24V supplyInput signal

B362

B366A

B366B



15

24V outputGround connection

K200

K200 gets activated when all the required sensors(B143, B362, B366) are working normally.

Engine started 1



16


K200

ECM 44 not grounded,enables engine start.

Engine started 2

Pumps & Pilot Pressure


L7 , L7 CR




Pump 1 – L740

, L740

CRPump 1 is the main pump in the hydraulic system of ROC L7 40 , L7 40CR. It is an axial pistonpump with a variable displacement. The pump is pressure compensated, which means that thepressure is maintained constant irrespective of the flow.The pump pressure can be controlled by either pressure relief valves connected to the controlpanel when impact is started, or by pressure control valve 4d .

Pressure relief valves in the control panel – L7 40 , L7 40CRDuring drilling, pump 1 pressure is controlledby two pressure relief valves ( 47e & 47f ) forhigh and low impact. These are connected to thepump control system when impact valve Y101A is activated. When impact is not switched on,pump 1 operates on constant pressure set bypressure relief valve 4d + the Delta-p presetpressure.

Pressure control valve “4d” – L7 40 ,L7 40CRDuring tramming, pump 1 is working in loadsensing mode, which means that the pumppressure depends on the load on the tramming

motors. The maximum pressure of pump 1 canbe adjusted by pressure relief valve 4d .

“P max” valve – L7 40 , L7 40CRThe “P max” valve located on the pump limits the maximum pump output pressure, but thispressure would not be reached since pressure relief valve 4d which is set to be lower than “P

” i th t li it th t V l 4d h ld b d h dj ti g th

Drilling mode(constant pressure)

Impact ON Impact OFF

Tramming mode(varying pressure)

Pressure relief valves47e & 47f control pump1 pressure

Pressure control valve4d + ∆ p set pump 1pressure

Max pressure limited by pressurecontrol valve 4d + ∆ p


Pump 1 – L8 30

L8



Pump 1 L8 Pump 1 is the main pump in the hydraulic system of ROC L8 30 . It is an axial piston pump

with a variable displacement. The pump is pressure compensated, which means that thepressure is maintained constant irrespective of the flow.The pump pressure can be controlled by pressure control valve 4d .

Pressure control valve “4d” – L8 30 During tramming, pump 1 is working in loadsensing mode, which means that the pumppressure depends on the load on the trammingmotors. The maximum pressure of pump 1 canbe adjusted by pressure relief valve 4d .During drilling, pump 1 operates on constantpressure set by pressure relief valve 4d + theDelta-p preset pressure.

“P max” valve – L8 30

The “P max” valve located on the pump limitsthe maximum pump output pressure, but thispressure would not be reached since pressurerelief valve 4d which is set to be lower than “Pmax”, is there to limit the system pressure. Valve 4d should be used when adjusting the pump1 working pressure within the system. “P max” is set to be higher than “4d” by factorysetting, so it’s usually not necessary to changethe setting on “P max”, this way “P max” wouldnot interfere with the LS signal.

In order to avoid start the diesel engine with pump 1 pressurized, the Drilling/Trammingswitch must be in the Tramming position when starting. In this position, pump 1 runs atstandby pressure, 23 bar. Starting with the switch in Drilling position is also electricallyblocked.


Pump 1 pressure settings



Pump 1 pressure settings• Checking / Setting the stand-by pressure “Delta-p”.1. Start the engine and set the engine speed to 1500 rpm.2. Move the switch Drilling/Tramming to position Tramming.3. Make sure no functions are activated, so the rig stands still.4. Pressure gauge 34 connected to pump 1 pressure line should

show 23 bar.5. Adjust the “Delta-p” set screw on the pump regulator if

necessary.

• Checking / Setting the pressure relief valve “4d”.1. Start the engine and set the engine speed to 1500 rpm.2. Move the switch Drilling/Tramming to position Drilling.3. Make sure no functions are activated. (Especially important for L7 40 and L7 40CR)4. The reading from gauge 34 should be 250 bar (LS return pressure + delta-p). If not, adjust

the screw on 4d until the gauge reads 250 bar. Note : If it happens that the reading is lower than 250 bar, and by adjusting 4d the gaugereading stays the same. This means that the “ P max ” valve is not correctly adjusted. Adjust“P max” valve according to the instructions below, then adjust “4d” until the gauge reads250 bar.

• Checking / Setting the maximum pump pressure “P max”. 1. Start the engine and set the engine speed to 1500 rpm.2. Move the switch Drilling/Tramming to position Drilling.

3. Make sure no functions are activated. (Especially important for L740

and L740

CR)4. Screw pressure relief valve 4d to its end position, so it would not limit the system pressureproduced by pump 1.

5. Screw the “P max” set screw clockwise (if the pressure is too low) or anti-clockwise (if thepressure is too high), while watching gauge 34 until it reads 270 bar.

6. When this is done, re-adjust the screw on 4d until the gauge reads 250 bar, to get back toits normal setting.

Pumps 2, 3 and 4Pumps 2, 3 and 4 are combined to a triple gear pump, mounted on pump 1.The maximum pressure of pump 2 is set by relief valves 4x and 4y in the drill rotation circuit.The pressure of pump 3 can be set on a variable relief valve 13a in the DCT valve block.

f f f

Delta-p

P Max


Pilot pressure



ot p essu ePilot pressure is supplied by pump 1 and generated in the main valve block by pressurereducing valve 4b set to 35 bar, and then out to the pilot circuits.

Solenoid valve Y169 control whether the pilot pressure goes to the drilling circuit or to thetramming circuit. Solenoid valve Y169 is activated when the Drilling/Tramming switch S130 is in tramming position and deactivated when the switch is in drilling position.



1

L S



2

F e e d / T r a m

Shuttle valve



3

230 bar



4

Cooling fans

Cooling fans



50 510

max

0

Revolution

mA

The rig is equipped with two standard fan drives, one for cooling the compressor/hydraulicoil, and one for cooling the engine water/air inlet. High ambient temperature fan drive forwarmer environment is available as an option.

Conditions for starting the compressor/hydraulic oil temperature cooler fan:

• Compressor temperature sensor B366 => PLC input X16-7OR•

Hydraulic oil temperature sensor B362 => PLC input X16-3Results in:• PLC output X16-9 => Y504 activated

Conditions for starting the engine water/ATAC temperature cooler fan:

• Engine coolant temperature sensor B354 (CAT system)OR• Air inlet temperature(CAT system)Results in:• PLC output X17-4 => Y501 activated

The signal input to solenoids Y504 and Y501 varies between 50mA – 510mA depending onthe cooling demands.

Rig type Full rpm atL7 95 °CL8 120 °C



Tramming

Tramming



Conditions for tramming function:

• Drilling/Tramming switch S130 must be in a tramming position*. => D552-CH2 orCH3/ON

• The hydraulic jack must be fully retracted, sensor B184 activated. => PLC input X10-7/ON (Optional equipment)

• Tramming paddles S174 or/and S175 must be activated. => D553/CH13 or CH14/ONResult in:•

*Y121A/B activated (directly after S130 being put in tramming position)• *Y169 activated (directly after S130 being put in tramming position)• Y206, Y207 activated by respective level.

Tramming direction and speed is controlled via the trammingpaddles ( S174 / S175 see figure). These controls send a signal tothe electrical pilot valves for tramming forward or backward.The pilot pressure changes the directional valves’ positionproportionally and pump 1 supplies the tramming motors’hydraulic circuits with oil.

The output range of the proportional electrical pilot valves fortramming can be adjusted in the menu for“Tramming valve current” under the rig controlicon, thus varying the tramming speed.

The output range lies between330mA – 500mA.

S174 S175

Tramming

Activating the tramming functionWhen the Drilling/Tramming s itch S130 is in an Tramming position (high or lo ) the



When the Drilling/Tramming switch S130 is in any Tramming position (high or low), the

following solenoid valves are activated.

Activation of Y121A:- It allows pump 1 pressure to connect to pressure compensator 4p and 4r in the main

valve block, 4p and 4r also have the functions of dividing the oil flow equally. Thetramming pressure is limited by pressure relief valve 4d set to 230 bar.

Activation of Y121B:- The oil flow from pump 4 goes through pressure relief valve 4c set to 250 bar. The

pressure is then delivered to positioning functions.Activation of Y169:- It allows pilot pressure to come through to the tramming circuit.

The tramming direction and speed are controlled by means of pilot pressure controlling theproportional directional valves. And these directional valves are controlled by solenoid valvesY206A , Y206B , Y207A and Y207B .

The valve block included in the tramming motor 66 contains a shuttle valve 66a , a pilotoperated directional valve 66b and a pressure reducing valve 66c for releasing the trammingbrake when the motor is pressurized. To prevent the motors from increasing speed whentramming down a slope, the over centre valve 66d serves as hydraulic brakes by means ofcreating counter pressure in the motor return line when the pressure in the motor pressure linedrops.

Reverse warningWarning signal/flash H185 is activated when tramming backwards.

Tramming high/low speed The Drilling/Tramming switch S130 position high tramming, activates solenoid valve Y122 .Pilot pressure is then led to directional valve 66f in each traction motor. This connects systempressure to the traction motors displacement device, which reduces the motor displacementand results in increase of traction motor speed.

Rear jack (Option)The rear jack is controlled by on/off switch S209 , which energizes solenoid valve Y410A/B .

Tramming



1

Input / SignalSwitch S130 in a Tramming pos.

Tramming paddles S174 or 175activated

Hydraulic jack retracted, B184 activated(option)

S174 S175

Tramming



2

Input / SignalS130/3 or 5 - D552, CH 2 or 3/ON

S174 or 175 - D553, CH 13 or 14/ON

Output on indicator cardX11-13 Y121A

X17-1 Y121BX11-14 Y122

X11-1 Y169A



3

Y121A

Y122

Y121B

Tramming high



4

Y169A

Tramming

4 p o s .



5

Y169A

Y121A

Y121B

Y122

P -

Pump 4

Y473



6

Y419 Y420

Pump 5

Positioning

PositioningThe positioning circuit is mainly supplied with oil from pump 1. However, since the



tramming circuit is also supplied from pump 1, it is necessary to use pump 4 for positioningduring tramming. Since pump 1 is bigger and operates at higher pressure than pump 4, itmeans that positioning is quicker in Drill mode than it is in Tramming mode.

Boom and feed positioningThe positioning cylinders are directly controlled by directional control valve 65 in the cabin.

The boom lift (BL

) and feed dump (FD

) cylinders are equipped with internal over-centervalves, which protect the cylinders from over load and acts as load holding valves. The feedswing ( FS ), feed extension ( FE ) and boom swing ( BS ) cylinders have built in double pilotoperated check valves.The BL cylinder is also equipped with throttle/check valve 64 , on the piston rod side. This isused to adjust the lowering speed of the boom to be equal to the elevating speed.

Positioning during trammingDuring tramming, pump 4 is delivering oil to the positioning circuit, the pressure is limited bythe pressure relief valve 4c set to 250 bar.When the Drilling/Tramming switch S130 is in tramming position, solenoid valve Y121B isactivated. This pressurizes the pump 4 circuit.

Track oscillationThe track oscillation solenoid valves Y419 and Y420 are controlled by switch S176 and S177 respectively.The oscillation cylinders are hydraulically linked by a two positioned solenoid valve, Y473 ,controlled by switch S445 .

- ON, FloatingWhen solenoids valve Y473 is activated with switch S445 inposition (a), the valve is open allowing system pressure to openthe over centre valves in the Track Oscillation valve block 68 .Both cylinders are inter-connected to enable oil to flow betweenthe two cylinders. This valve position is used during tramming sothat ground unevenness can be compensated between the

a

b c

d



Positioning



1

Input / SignalTrack oscillation left S176, right S177

Track oscillation float/lock switch S445

Hydraulic jack S209

Positioning



2

Input / SignalS176/A1 or A3 – D552, CH 5 or 6/ON

S177/A1 or A3 – D552, CH 7 or 8/ON

S445/A3 – D554, CH 2/ON (floating)

S209/A1 or A2 – D552, CH11 or 12/ON

Output on indicator cardX13-9, X13-10 Y419A/B

X15-5, X15-6 Y420A/B

X15-7 Y473

X12-6, X12-7 Y410A/B



3

L

S



4

Y121A

2 3 0

b a r

F e e

d / T

r a m



5

Y419 Y420

Y473



6

Y419 Y420

P - 4 p o s .

Track oscillation /positioning are supplied

by pump 4 when tramming

P - 4 p o s .



7

Y121B

Pump 4

P



Air System & Compressor


Air System



Air SystemCompressed air is used for the following rig functions:• Flushing air

Full flushing and reduced flushing air. Transportation of drilled cuttings from the holeto the surface. The reduced flushing is mainly used during collaring through fissuredground, to prevent the air from destroying the hole walls.

• ECL, rock drill lubrication systemDistribution of lubrication oil inside the rock drill.

• HECL, DTH Hammer lubrication system Distribution of lubrication oil inside the DTH Hammer.

• HECL, COPROD head and sections lubrication systemDistribution of lubrication oil inside the COPROD head and sections.

• ECG, thread greasing systems (option)Distribution of lubrication oil onto the drill rod threads.

• Spray greasing system (option)

Distribution of lubrication oil into the flushing air.• DCT, dust collector

Cleaning of the DCT filters.• Extra air-outlet

Provides air for running tools or grinders.• Water-mist system (option)

Pressurization of the air/water tank.

Flushing air – L7 40 , L7 40CRConditions for the flushing air function:

• Switch S130 in Drilling position => input D552-CH1/ON• Sensor B118 activated, RHS arm in carousel => PLC input

X10-5/ON• Switch S100 in position reduced (b) or full (a) => input

D551-CH1/ON or OFF• Switch S446A in Impact position => input D550-CH9/ON

(To start only flushing, press the impact switch S446A for shorterthan 0.5 seconds. To start low impact, press the switch for longerthan 0 5 seconds Pressing the switch again for shorter than 0 5

S100a

b




Flushing air – L8 30 Conditions for the flushing air function:

• Switch S130 in Drilling position => input D552-CH1/ON• Sensor B118 activated, RHS arm in carousel => PLC input X10-5/ON• Switch S446A/B in Impact position => input D550-CH9/ON or CH10/ON

There are two air flushing modes, reduced and full air flushing, activated by solenoid valvesY116 and Y115. When full air flushing is activated by S446B , both the valves are open; andwhen reduced air flushing is activated by S446A , only Y116 is open.


ECL, rock drill lubrication systemSee section “ECL, rock drill lubrication system” under chapter “Drilling”.

HECL, DTH hammer lubrication system



HECL, DTH hammer lubrication systemSee chapter “HECL, DTH hammer lubrication system” under “Drilling”.

HECL, COPROD head and sections lubrication systemSee section “HECL, COPROD head and sections lubrication systems” under chapter“Drilling”.

ECG, Thread lubrication systems (Option)See chapter “ECG, thread lubrication with oil (Option)”.

Spray greasing system (option)The lubrication is injected into the flushing air and dissipates through the treads of the drillrods to keep them lubricated.See chapter “Spray greasing system (Option)”.

DCT, dust collectorSee chapter “Dust collector, DCT”.

Extra air-outletThe rig is equipped with two air outlets where a grinder or tool can be connected. The airpressure is limited to 7 bar by a pressure reducing valve.

Water-mist system (option)See chapter “Water mist systems (Option)”.

Compressor

General – L7 40 , L7 40CRThe on board compressor is a single stage, oil-injected screw compressor. The normalworking pressure has been set to 12 bar, whereas the maximum pressure is 14 bar. Themaximum free air delivery (FAD) is 252.7 l/sec at 12 bar working pressure with 20°Cambient temperature.


Compressor element – L8 30 The compressor element contains two rotors, one female and one male rotor, mounted onroller as well as ball bearings. The female rotor is driven by the diesel engine, and powers themale rotor. The rotors are lubricated by oil, injected and mixed with the air. This also



y , jincreases the efficiency as the oil seals between the rotor-tips and housing. The compressorelements are of Atlas Copco type OIS N-02 and OIS J-33. The gear ratio is 2.195.

Air flowIntake air is drawn in through the air filter and the inlet valve to the compressor element. Theair is mixed with injected oil and after compression is passed through the check valve into the

air receiver. The check valve prevents back-flow of compressed air when the compressor isstopped. In the air receiver, most of the oil is removed from the air/oil mixture by the oilseparator. The flow of compressed air then passes through the minimum pressure valve outinto the drill rigs air system. The minimum pressure valve prevents the pressure in the airreceiver to drop below the minimum working pressure of the compressor before the air isreleased, in order to ensure proper function of the oil system.

Air Atmospheric Pressure

Air Regulating Pressure

Air Working Pressure

Air/Oil Mixture

Oil


Cooling and oil systemOil is used for lubrication, sealing, cooling and is boosted by air pressure, there is no oilpump. The lower part of the air receiver serves as oil tank. Air pressure forces the oil from theair receiver through the oil cooler, oil filter and the oil stop valve to the different injection



g p jpoints of the compressor element. The air/oil mixture then leaves the compressor element andre-enters the air receiver, where the oil is separated from the air by centrifugal or cycloneforces and the oil separator element. Oil that is collected in the bottom of the oil separator isreturned to the oil system by way of the scavenge line and flow restrictor. The oil stop valveprevents the compressor element from flooding with oil when the unit is stopped.

Note: A thermostatic valve bypasses the oil cooler when the oil is below 40 °C for L740

,L740CR, and 80 °C for L8 30.

Regulating system – L7 40 , L7 40CRThe compressor control system contains a regulating valve. This valve serves to adapt thevolume of air supplied by the compressor to the air consumption, while simultaneouslymaintaining the working pressure within the limits.The control system also includes a loading solenoid valve Y210 which is activated by switchS180 on the right hand control panel.

Regulating system – L8 30 The compressor control system contains two regulating valves. These valves serve to adaptthe volume of air supplied by the compressor to the air consumption, while simultaneouslymaintaining the working pressure within the limits.The control system also includes a load solenoid Y210A and a high/low pressure solenoid

valve Y210B . Y210A is activated by switch S180 on the right hand control panel. Onepressure switch B336 prevents the engine to start with the compressor loaded, which impliesthere should be less than 1 bar in the air receiver before starting the engine. The secondpressure switch B337 prevents the compressor to load below 5 bar. Solenoid valve Y210B isactivated when high impact switch S446B is activated.

Instrumentation & fault indication – L7 40 , L7 40CRThe compressor air pressure delivered from the compressor can be read-off pressure gauge.The compressor has also a temperature indicator-switch, B366 , which automatically generatea warning on the display if the compressor temperature has reached +117°C, and cuts thediesel engine if the compressor temperature has reached +120°C.



Compressor

Input / Signal



1

Input / SignalSwitch S130 in any position after

engine start

Compressor load switch S180

activatedFor L6, L8 only – Minimum loading

pressure switch B337 activated

Compressor temperature normal –

B366A/B below limits

Compressor

Input / Signal



2

Input / SignalS180/A3 - D552,CH 9/ON

For L8 30 only, B337 - X13-3/ON

Output on indicator cardX18-8 Y210A (for all)

X12-1 Y210B (for L8 30 )

Y210Regulating valve



3

Inlet valve safety valveB366

B365

Oil filter & thermostat

Min pressurevalve

Regulating valvesY210A



4

Inlet valveB366B

B365

Oil filter & thermostat Min pressurevalve

B366A

safety valve

Y210B



Y210Regulating valve



6

Oil cooler

Main air flow

Inlet valve safety valveB366

B365





7

Inlet valveB366B

B365


B366A

safety valve

Y210B

Y210A

L830



8

Compressor loaded& High impact

Y210B




9

Inlet valveB366B

B365


B366A

safety valve

Y210B

Oil cooler



Oil pre-heating

Oil pre-heating

Oil pre-heating – L7 40 , L7 40CRPump 2 is used for pre-heating the hydraulic oiland the rock-drill impact components. Normal

L7 , L7 CR



p poperating temperature of the hydraulic oil is40°C. Before operating the drill rig the oilshould be pre-heated to minimum operatingtemperature, 20°C.

When switch S130 is in the pre-heating position,solenoid valve Y121A and Y121B are activated.Solenoid valves Y120A , Y120B and Y120C arealso activated in order to perform pre-heating.

Pre-heating the hydraulic oil:When activating Y120A , pressure is generatedin the pressure chamber of 4x . This pressure islimited by 4y to 170 bar. The flow of pump 2goes through the shunt valve 4x with a pressureof 170 bar + spring pressure (11 bar).

Pre-heating the rock-drill components:Y120B blocks the impact return line from therock-drill, Y120C opens and oil flow from

pump 2 is fed through the hammer return lineand back to the tank through the hammerpressure line.

Note : It’s possible to tram the rig at the sametime warming up the hydraulic oil, solenoidvalve Y169 can also be activated when S130 inpre-heating position.



Oil pre-heating

Input / SignalSwitch S130 in Oil preheating pos



1

Switch S130 in Oil preheating pos.

Oil pre-heating

Input / SignalS130/7 - D552,CH 4/ON



2

S130/7 D552,CH 4/ON

Output on indicator cardX11-13 Y121A

X17-1 Y121B

X11-12 Y120A, Y120B, Y120C

(Y120B/C only ROC L7)

Y120B/C only



3

Y121A

Y121B

Y120A,B,C

Y120B/C onlyfor L7TH+CR

Page 35

Page 34

Oil pre-heating

Oil pre-heating



4

Y121A

Y121B

Y120A

Y120B



5

Y120C



Drilling functions

Drilling functions

Activation of drilling functions – L7 40 , L7 40CRWhen S130 is in drilling position, Y121A and Y121B are not activated, Y169 is deactivatedto let through pilot pressure to the drilling circuits.



De-activation of Y121A:- It allows pump 1 pressure to connect to LS/pump pressure line directly. If impact is

activated, the pump pressure will be according to the preset values of thehammer/pump pressure pressure relief valves ( 47e and 47f ) in the logic block. If

impact is not activated, the working pressure is limited by pressure relief valve 4d .De-activation of Y121B:- The pump 4 pressure supplied to positioning functions during tramming, is now used

for rotation function together with pump 2. This is simply to assist pump 2 for a betterrotation output.

De-activation of Y169:- Pilot pressure is now led to the drill lever through logic valve and to the DCT circuit,

PLC output X11-1/OFF.

The Drilling functions such as Drill feed, Rapid feed, Rotation and Threading functions are allcontrolled by one drill lever.

Activation of drilling functions – L8 30 When S130 is in drilling position, Y121A and Y121B are not activated, Y169 is deactivated

to let through pilot pressure to the drilling circuits.

De-activation of Y121A:- It allows pump 1 pressure to connect to LS line directly. The working pressure is

limited by pressure relief valve 4d .De-activation of Y121B:

- The pump 4 pressure supplied to positioning functions during tramming, is now usedfor rotation function together with pump 2. This is simply to assist pump 2 for a betterrotation output.

De-activation of Y169:- Pilot pressure is now led to the drill lever through logic valve and to the DCT circuit,

Drilling functions

Drill feedThe drill feed circuit includes functions for feeding down- and upwards and controlling thefeed pressure during collaring and drilling. The hydraulic power is supplied from pump 1.The Anti-Jamming circuit is described separately, see chapter “Protective functions”.

• Drill feed direction, Up-/Downwards



pThe drill feed/rotation lever 45 controls the directional valve 4f via the logic block. SolenoidsY179A and Y179B are to control the magnetic locks for drill lever feed and rotationfunctions.

Led greenH452

Rapid/ drill feedS452

Impact lowS446A

Impact highS446B

Magnet offS453

Led yellowH446

L7 40 Drill mode:E: neutralB: rotation anti-clockwiseB+A: rotation anti-clockwise and feedforward ( magnet function )

B+C: rotation anti-clockwise ( magnetfunction ) and feed backward.D: Feed forward ( magnet function )F: Feed backwardH i l k i

Rapid feed / threading mode:E: neutralB: ThreadingB+A: rotation anti-clockwise and rapid feedforward

B+C : rotation anti-clockwise and rapid feedbackwardD: Rapid feed forwardF: Rapid feed backwardH U h di

75

6

8

B

C I

H

G A D

F

E Drill rotation

Magneticholding

Drill feed

Magnetic holding

Drilling functions

L7 40CR, L8 30

Drilling mode:E: neutralB: rotation clockwiseB+A: rotation clockwise and feed forward(magnet function )B+C: rotation clockwise ( magnet function ) andfeed backward

Rapid feed / threading mode:E: neutralB: ThreadingB+A: rotation clockwise and rapid feedforwardB+C : rotation clockwise and rapid feedbackward



feed backward.D: Feed forward ( magnet function )F: Feed backwardH: rotation anti-clockwiseH+G: rotation anti-clockwise and feed forwardH+I: rotation anti-clockwise and feed backward

Diode H452 is lit in this mode.

backwardD: Rapid feed forwardF: Rapid feed backwardH: UnthreadingH+G : rotation anti-clockwise and feedforwardH+I: rotation anti-clockwise and feedbackward

There is no diode indication in this mode.

Magnetic holding on rotation during drilling or/and feeding forwards can only be achievedwhen the control lever is being pulled to the end position, and when S452 is not activated(Led H452 = ON). Pulling the lever only half way and then release would result in leverspringed back to the neutral position, which also marks the end of the movement.

Conditions for drill feed with magnetic holding:

• Switch S130 in drilling position => D552-CH1/ON• Switch S452 in feed/rotation mode, not activated => D550-CH11/OFFResult in:•

Relay K178 /OFF• Y179A/B , H452 activated

To unlock the magnetic lock and get the lever back to the neutral sector, activate switch S453or shift the lever to Rapid feed position with switch S452.

Conditions for deactivation of magnetic holding:

• Switch S453 activated => D550-CH12/ON OR • Switch S452 in rapid feed/threading mode => D550-CH11/ON R l i

Drilling functions

The feed circuit is supplied with oil from pump 1. In drill mode the electrical pilot valvesY178A-F are not activated. When feed is activated with the drill lever the pilot pressure isdirected first via either directional valves Y178A or B depending on the choice of feed

direction, then via directional valve Y109 which changes the feed direction in case of anti- jamming and out to the directional valve in the drill feed block. Anti-jamming is describedlater.



• Main valve block 4The pilot operated directional valve 4f in the main valve block, directs the hydraulic power tothe feed cylinder. The pilot operated pressure compensator 4e regulates the feed workingpressure.

• Feed pressuresThe pressure for forward feeding can be read on pressure gauge 33 .The feed pressure is generated from the system (Feed/Tram) pressure by pump 1, and it isregulated by pressure relief valve 4d . When feeding forwards, the pressure relief valves 47a or 47b limits the maximum pressure to the feed cylinder. If these pressure relief valves wouldfor some reasons fail to work, then the check valve 4n would limit the maximum pressure.

Drilling functions

- Low feed pressure (collaring)When the impact control switch S446A is activated (impact pressure low), solenoidvalve Y101C is deactivated, which allows the low feed pressure relief valve 47a to

control pressure compensator 4e in the main valve block.- High feed pressure (drilling)

When the Impact control switch S446B is activated (impact pressure high), solenoidvalve Y101C is activated which allows the high feed pressure valve 47b to control



valve Y101C is activated, which allows the high feed pressure valve 47b to controlpressure compensator 4e in the main valve block.

- Feeding backwardsWhen feeding backwards, solenoid valve Y101C is deactivated, which allows the lowfeed pressure relief valve 47a to control pressure compensator 4e in the main valveblock. But if feeding backwards is activated in connection with anti-jamming,solenoid valve Y101C remains activated and the high feed pressure relief valve 47b will control pressure compensator 4e in the main valve block.

• Feed cylinder valve block 5The feed valve block 5 contains one over-centre valve 5b . The over-

centre valve 5b works as load holding valve when the cylinder ispressurized for feeding forwards.

• Feeding speedThe drill feed speed is set to correspond to a drill feed speed of 15m/min upwards and 8 m/min downwards.



Drill feed

Input / SignalSwitch S130 in Drilling pos.

Drill feed

Magnetic holding



1

Drill lever in a feed position

Feed forward – D

Feed backward – F

OutputFeed forward magnetic

holding

– D550, CH8/ON Y179A

Drill lever in drill mode – D550, CH15/ON H452

(No magnetic holding in pos. F)

75

6

8

B

C I

H

GA

D

F

EDrill rotation

Magneticholding



2

Y169

Feed p.

F e e d / T r a m

F e e d p

.



3

O

Pilot lever

F e e d p

.



4

Y101C

Pilot lever

O

Pilot lever

Drilling functions

Drill rotation

• Drill rotation, clockwise/anticlockwise

Conditions for drill rotation with magnetic holding:

• Switch S130 in drilling position => D552-CH1/ON



g p• Switch S452 in feed/rotation mode, not activated => D550-CH11/OFF Result in: • Relay K178 /OFF•

Y179A/B activated, H452 activated

Note : When Y179A/B is activated the magnetic holding is obtained when the drill lever ismoved to the sectors for drill rotation or/and drill feed.

Conditions for switching off rotation and magnetic holding:

• Switch S453 activated => D550-CH12/ON OR • Switch S452 in rapid feed/threading mode => D550-CH11/ON Result in: • Y179A/B deactivated

When switch S453 is pressed once on the drill lever the magnets will be temporarilydeactivated and the drill lever returns to neutral position which results in feed and rotation

being switched off, with impact and air flushing remains on.Magnetic holding can also be switched off once S452 is activated, thus shifting to rapidfeed/threading mode where magnetic holding is not supported. The actual impact and airflushing at this point will also be switched off.

Note: Magnetic holding will be automatically reactivated after a delay of 0.2 seconds ifswitch S453 is deactivated. This means that the next time the drill lever is moved to one ofthese sectors (sector for drill feed or drill rotation), magnetic holding will be activated again.

When rotation is activated (with the drill lever) the pilot pressure is directed, via electricalpilot valve Y178C or D depending on the choice of rotation direction, then to the directional

Drilling functions



• Rotation speed- L7 40 Anti-clockwise rotation (drilling); L7 40CR & L8 30 Clockwise rotation (drilling)When the drill lever is in “Drill-rotation” position, the setting of the flow regulatorcontrols how much the directional valve 4w will open. The flow to the rock drill rotationmotor is proportional to the opening of the directional valve 4w .- L7 40 Clockwise rotation; L7 40CR & L8 30 Anti-clockwise rotationThe drill lever controls the rotation speed. The main directional valve 4w opens incorrespondence to the lever angel. The flow regulator is not connected.

The adjustment knob for flow regulator can be seen in chapter “Adjustment/calibration”.

• Rotation pressures

The rotation pressure is generated by pump 2 with the assistance of pump 4 when drilling.Depending on the direction of rotation, the pressure relief valve 4u or 4t is activated to limitthe maximum pressure for clockwise and anti-clockwise rotation respectively.L7 40 : The maximum pressure for rotation anti-clockwise is limited to 125 bar (valve 4t ), and

Rotation


Drill lever in a feed position 6

GA

Drill feed

Magnetic holding



1

Drill lever in a feed position

Rotation drilling – B

Rotation unthreading – H

OutputDrill rotation magnetic holding

– D550, CH7/ON Y179B

Indication of drill lever in drillmode – D550, CH15/ON H452

(No magnetic holding in pos. H)

75

6

8

B

C I

H

GA

D

F

EDrill rotation

Magneticholding

Pil t



2

Pilot pressure

D



Drilling functions

Rapid feed

• Rapid feed direction, Up-/Downwards

When the lever is in the rapid feed/threading mode, magnetic holding is not available.

Conditions for rapid feed:

• Switch S130 in drilling position => D552 CH1/ON



Switch S130 in drilling position => D552-CH1/ON• Switch S452 in rapid feed/threading mode, activated => D550-CH11/ONResult in:•

RelayK178

/ON→

Y178

activated• Y179A/B deactivated

In rapid feed mode the electrical pilotvalves Y178A-F are activated (seefigure right). When rapid feed isactivated with the drill lever the pilotpressure is directed via solenoid

Y178A or B depending on the choiceof direction, to the directional valve inthe main valve block.

• Main valve block 4The proportional directional valve 4j directs the hydraulic power to the feedcylinder. The pilot operated pressurecompensator 4i regulates the rapid feedworking pressure.

• Rapid feed pressuresThe feed pressure for rapid feed isgenerated from pump 1, and it is regulated by pressure relief valve 4d . Depending on thedirection of rapid feed, the pressure relief valves 4l or 4k limits the maximum pressure to the

feed cylinder, forward and reverse respectively. The maximum pressure for feed forward islimited to 220 bar, and the maximum pressure of feed backward is limited to 170 bar. If thesepressure relief valves would for some reasons fail to work, then the check valves 4n and 4m

ld l h



Drilling functions

• Rapid feed stops – L8 30

M 4 M 3 M 2 M 1

Stop forward (M1) – Rapid feed stop forward above the breakout table, so the rock drill canbe threaded into the tube caught in the lower breakout jaw



be threaded into the tube caught in the lower breakout jaw.Stop lower uncoupling (M2) – Rapid feed stop backward, when the joint between two tubesis between the breakout jaws in order to break the tube threads.Stop upper uncoupling (M3) – Rapid feed stop backward, when the tube is in correctposition to be inserted into the magazine.Stop backward (M4) – Rapid feed stop backward, at a position above the RHS magazine,but before mechanical stop. This stop is used prior to adding a new tube into the drill centre.

The rapid feed stops are software stopsthat are controlled by the PLC. All thestop distances can be set in the display.

Figure: L7 40

& L8 30

rapid feed stop settings

Drilling functions

• Rapid feed stops – L7 40CR

M 4 M 3 M 2 M 1 M 0

Impact stop (M0) – Feed stop forward between M1 and the mechanical stop forward. Noimpact is allowed if the rock drill is too near the mechanical stop



impact is allowed if the rock drill is too near the mechanical stop.Stop forward (M1) – Rapid feed stop forward just above the breakout table, so the rock drillcan be threaded into the tube caught in the lower breakout jaw.Stop lower uncoupling (M2) – Rapid feed stop backward, when the joint between two tubesis between the breakout jaws in order to break the tube threads.Stop upper uncoupling (M3) – Rapid feed stop backward, when the tube is in correctposition to be inserted into the magazine.Stop backward (M4) – Rapid feed stop backward, at a position above the RHS magazine,but before mechanical stop. This stop is used prior to adding a new tube into the drill centre.

The rapid feed stops are software stops

that are controlled by the PLC. All thestop distances can be set in the display.

Rapid feed stop activationWhen the measured distance happens to equal to the distance set inthe display, solenoid valves Y149 (backward) or Y150 (forward)

in the logic valve block is activated by PLC output X16-10 orX17-2.Solenoid valve Y149 gets activated by M2, M3 and M4, where assolenoid valve Y150 only gets activated by M1 If any of the two

S113

Figure: L7 40CR rapid feed stop settings

Drilling functions

Calibrating B172 In order for these build-in software stops to work, calibration sensor B104 is used to calibratethe depth encoder B172 . The depth encoder B172 is an optical encoder which throughsending out pulses defines the position of the cradle on the beam.



Note: The menu illustration shown does notcorrespond to the actual position.

The distance to be entered in the display is the cradle travel distance between the rear endmechanical stop and when the indicator plate actuates sensor B104 . This value can be put inmanually or automatically.

Manual inputOperator needs to use a ruler to manually measure the distance between the front of the rockdrill cradle indicator plate and the calibration sensor B104 , when the rock drill is in its rearend stop.

Automatic inputThe cradle needs to be moved back to the upper most position at the mechanical stop. To

carry out this movement, the drill lever needs to work in drill mode. Once the cradle hasreached the top end, reset the position of the cradle. Then mark the check-box for “Auto setsensor position”, now move the drill lever forward slowly so the cradle can pass through thecalibration sensor B104 at a maximum speed of 4m/min. Once B104 is activated, a value ispresented on the display.

Note: It’s recommended that both manual and automatic input is done to ensure a betterprecision. This distance is a factory setting, it is not necessary to change the distance unlesssensor B104 has been moved, or if the rock drill’s rear-end mechanical stop has beenchanged, i.e. if the feed ropes have been replaced or tensioned.

Drilling functions

Threading

• Threading and un-threading

When the lever is in the rapid feed/threading mode, magnetic holding is not available.

Conditions for threading/unthreading:

• Switch S130 in drilling position => D552-CH1/ON



• Switch S452 in rapid feed/threading mode, activated => D550-CH11/ONResult in:• Relay K178 /ON → Y178 activated• Y179A/B deactivated

In threading mode the electrical pilot valves Y178A -F are activated just as in rapid feedmode. The threading function is a combined activation of both drill feed and rock-drillrotation by one lever stoke. When threading is activated with the drill lever the pilot pressureis directed via the activated solenoid Y178C or D depending on the choice of threadingdirection, and then to the directional valve in the drill feed and rotation block respectively.

• Rod coupling feed pressuresThreading and unthreading functions need two different feed pressures since unthreadingrequires higher pressure than threading. Pressure relief valves 47d and 47c control themaximum rod coupling feed pressure for feed forward ( L7 40 : threading – anti-clockwise;L7 40CR & L8 30 : threading – clockwise) and backward ( L7 40: unthreading – clockwise;L7 40CR & L8 30 : unthreading – anti-clockwise) respectively. Depending on the choice ofthreading, pressure relief valves 47c and 47d will then in turn control pressure compensator4e in the main valve block.

By pulling the lever to the left (threading), logic valve G is activated, which connects the feedpressure to the pressure relief valve for thread feed forward 47d . And by pulling the lever tothe right (unthreading), logic valve H is activated, which connects the feed pressure to thepressure relief valve for thread feed backward 47c .

•

Drill feed and rotation speed when threading Rotation:When rotation is activated by the threading lever, the flow regulator which controls therotation pilot pressure signal is excluded from the circuit This means that the rotation speed is

Rapid feed


Drill lever in rapid feed mode 6

GA

Drill feed

Magnetic holding



1

S452 activated – D550, CH/11/ON

Drill lever in a rapid feed position

Rapid feed forward – D

Rapid feed backward – F

Output on indicator cardRelay K178 activated

– X12-2 K178 Y178A-E

75

8

B

C I

H

D

F

EDrill rotation

Magneticholding



2

K178

Y178A-F

Rapid feed +coupling

Pilot lever



3

Y178D

Y178C

Y178B

Y178A



4

Y169

Y178E,F

F e e d / T r a m

R



5

Y149

Y150

Note: Only one of them (Y149, Y150) is activated at a time.

Rapid feed stop

Pilot lever



6

Y149 Y150

Rod coupling


Drill lever in rapid feed mode 6

GA

D

Drill feed

Magnetic holding



7

S452 activated – D550, CH/11/ON

Drill lever in a rod coupling position

Threading – B

Unthreading – H

Output on indicator cardRelay K178 activated

– X12-2 K178 Y178A-E

75

8

B

C I

H

D

F

EDrill rotation

Magneticholding

Pilot lever F e e d p

.



8

RotationFeed

FEED



9

Pump 2

ROTATION

Y169

Y178E,F

Pilot lever F e e d p

.



10

P

Drilling functions

Impact with air flushing – L7 40 , L7 40CRConditions for the impact function:

•

Switch S130 in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON• Flushing air switch S100 in reduced or full position => D551-CH1/ON or OFF• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Impact switch S446A or S446B must be activated => D550-CH9/10/ON• The rock drill damper pressure must be between 45 and 120 bar. (DPC-I)

L7 , L7 CR



The impact circuit includes function for activating the rock drill impact mechanism andcontrolling the pressure for collaring and drilling (low and high pressure). The circuit alsoactivates the Impact hour counter (a function of the HEC software in the display).

The hydraulic power is supplied from pump 1.To protect the rock drill and drill steel, the DPC-I system can shut off or lower the impactpressure if certain conditions are met. The DPC-I system is described separately, refer tochapter “Damper & DPC-I system”.

Activation of ImpactPressing the impact control switch S446A/B for longer than 0.5 seconds activates lowrespective high impact under the condition that high impact is achieved after first using lowimpact. Otherwise if starting directly on high impact, the button for high impact activationS446B must be held in at all time. Logic valves I and J in the DPC-I system sense the rockdrill damper pressure. If the damper pressure is lower than the preset value of logic-I orhigher than the preset value of logic-J, the valves will prevent activation of impact.When impact is activated, pump 1 system pressure is also led to logic valve B , which allowsany of the two impact pressure relief valves 47e and 47f to take control over the pump 1pressure. In ROC L7 40CR , there is also a logic valve O that will stop/prevent impact whenfeed pressure is below its preset value.

S446A/B controls the activation of solenoid valves Y115 , Y116 in the air system, but it isS100 that controls the combination of Y115 and Y116. It’s recommended to keep S100

activated to allow full flushing air pressure as soon as S446 is activated. S100 should beswitched off (changing to reduced flushing air) only when drilling through a weaker complexof the rock layer. S446A/B also control three solenoids valves in the hydraulic system,Y101A f i i i Y101B f i i l i Y101C f i hi

Drilling functions

Air flushing:Solenoid valve Y116 (or Y116+Y115) is activated to engage reduced (or full) airpressure depending on the status of Y100, and the air pressure is directed to theregulating valve for air pressure regulation.

Drill feed:The drill feed low pressure solenoid valve Y101C is not activated in order to engagelow feed pressure.

- High impact pressureWhen the high impact control switch S446B is activated, the following will take place

L7 , L7 CR



When the high impact control switch S446B is activated, the following will take placein respect to all the pressures needed for the impact function. Led H446 will be

activated to give stable signal. Impact/pump1 pressure:Logic valve B is activated since solenoid valve Y101A is ON , logic valve E isactivated since solenoid valve Y101B is OFF , logic valve D is activated by rotationpressure, and damper pressure now meets logic valve A . If the damper pressure is highenough to overcome the preset value of logic-A, pump 1 Load Sensing line isconnected to the high impact relief valve 47f . Otherwise logic-A is deactivated, thusconnecting the pump 1 Load Sensing line to the low impact relief valve 47e .

Air flushing:Solenoid valve Y116 (or Y116+Y115) is activated to engage reduced (or full) airpressure depending on the status of Y100, and the air pressure is directed to theregulating valve for air pressure regulation.

Drill feed:The drill feed low pressure solenoid valve Y101C is now activated in order to engagehigh feed pressure, under the condition that the RPC-F valve logic-B is not activated.

Refer to RPC-F under “Protective functions”.Deactivation of impactImpact can be deactivated by pressing S446A/B for shorter than 0.5 seconds. If the lever issituated in magnetic holding position, impact will be switched off with the lever returning tothe neutral position, thus also switching off feed , rotation and air flushing .

Impact hour counter

The impact hour counter is a build-in function of the HEC system. As long as either of theimpact switches S446A or S446B is activated, the counter in the software keeps counting.

Drilling functions

Impact – L8 30 Conditions for the impact function:

•

Switch S130 in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Impact switch S446A or S446B must be activated => D550-CH9/10/ON

The impact circuit includes function for activating the DTH hammer impact mechanism andt lli th f ll i d d illi (l d hi h ) Th i it l

L8



controlling the pressure for collaring and drilling (low and high pressure). The circuit alsoactivates the Impact hour counter (a function of the HEC software in the display).

Activation of ImpactPressing the impact control switch S446A/B for longer than 0.5 seconds activates lowrespective high impact.

The impact control switch S446A/B , positions low and high, control three solenoid valves inthe air system, Y116 , low impact, Y115 , high impact and Y210B , high/low air pressure

regulation. They also control one solenoid valve in the hydraulic system, Y101C , switchingbetween high/low feed pressure.

Impact feed and air pressures- Low impact pressure

When the low impact control switch S446A is activated, the following will take placein respect to all the pressures needed for the impact function. Led H446 will beactivated to give blinking signals.

Air pressure for impact and flushing:When the impact control switch S446A is activated, solenoid valve Y116 is activatedto give reduced flushing air, and the air pressure is being controlled by the regulatingvalve set to 18 bar via the un-activated compressor high pressure solenoid valveY210B .

Drill feed pressure:The drill feed low pressure solenoid valve Y101C is not activated in order to engagelow feed pressure.

- High impact pressure When the high impact control switch S446B is activated the following will take place

Drilling functions

Deactivation of impactImpact can be deactivated by pressing S446A/B for shorter than 0.5 seconds. If the lever issituated in magnetic holding position, impact will be switched off with the lever returning tothe neutral position, thus also switching off feed , rotation and air flushing .

Impact hour counterThe impact hour counter is a build-in function of the HEC system. As long as either of theimpact switches S446A or S446B is activated, the counter in the software keeps counting.

L8



Impacthour countsince last

reset.

Accumulatedimpact hours

(can not be reset)

Drilling functions

Impact stroke lengthThe stroke length of the COP 4050, COP 4050CR impactpiston is electrically controlled through switch S400.

When S400 is in position (a) => D553-CH7/ON:- Solenoid valve Y175 is not activated, only short

stroke length is available.

When S400 is in position (b) => D553-CH7/OFF:- If low impact S446A is activated, Y175 is not a

L7 , L7 CR



activated, only short stroke length is available

- If high impact S446B is activated, Y175 is activated,only long stroke length is available.

When solenoid valve Y175 (PLC output X17-15) is activated, it is not opento allow pump 1 impact pressure to affect the stroke position valve in the rock-drill, the rock-drill will use long stroke length. When Y175 is deactivated, it is open to the pump 1 impactpressure line and the rock-drill will use the short stroke length.

Which position to use has to be decided from the rock condition. Drilling in softer formations,each stroke can contain more energy than can be absorbed by the rock. In such cases it can bebetter to use only the short stroke length.

S400

b

Figure: example, L7 40 left panel



Impact / Flushing air


Gripper sensor B118 in carousel pos.

Impact switch S446A or B activated



1

p

Compressor load switch S180 activated(mandatory for L6, L8)

12

3

56

4

Drill feed

75

6

8

B

C I

H

GAD

F

EDrill rotationMagneticholding

Magnetic holding

Impact / Flushing air

Input / SignalS130/1 - D552,CH 1/ON

S180/A3 - D552,CH 9/ON

S100/A3 D551 CH1/ON or OFF



2

S100/A3 - D551, CH1/ON or OFF

S446A or B - D550, CH9 or 10/ON

B118 - X10-5/ON

Output on indicator card

Drilling - D550, CH16/ON H446X17-13 Y115

X17-14 Y116

X11-9 Y101A

X13-12 Y101B

X11-15 Y101C

X18-8 Y210A

X12-1 Y210 B

Y116

Page 38 Reduced flushing air, also impact low L8 30

L740 , L7 40CR, L8 30

L740 , L7 40 CR, L8 30



3

Y101A

Y101B

Page 40 Compressor loading, also impact low L830

L740 , L7 40CR

Impact low

Y210A

Page 34



4

Y116Y115

M

a i n a

i r f l o w

B142L7TH/CR only



5

M a

i n a

i r f l o

w

7 bar



6

Pilot lever

Y175

P

F e e

d p .



7

Q

I

O

JY101AY101B

D

B

C

Pump p.

Impact low on ROC L7 40



8

Y116

Page 38 Full flushing air, also impact high L8 30

L740 , L7 40CR, L8 30

L740 , L7 40CR, L8 30

Y115



9

Y101A

Page 34 Max feed pressure, impact high

L740 , L7 40CR

Impact high

Y210A

Page 34

Y101C

Y210B

L830

Y210A



10

Impact high

i r m

i x t u r e



11

Y106Tank

O i l / a

Y116Y115

M

a i n a

i r f l o w

B142L7TH/CR only



13

Y101C

Pilot lever

Y175

Pump p.

F e e

d p .



14

Q

I

O

JY101AY101B

D

B

C

high

Y101C

Impact high on ROC L7 40



15



Drilling functions

ECL, rock drill lubrication system

FunctionECL pump Y106 starts to pump as soon as Impact is turned ON. The ECL pump is anelectrical piston pump, controlled by the PLC output X17-9 which sends out pulses to thepump. Lubrication oil is then fed through a small plastic hose inside the air hose to the rockdrill, where the oil and air are mixed. A pressure reducing valve set to 5.5 bar limits theamount of air used for the ECL system. The ECL lubrication pressure gauge is located in thecabin. There are two sensor switches which control the ECL oil collection pressure, B381 forlimiting the low collection pressure and B382 for limiting the high collection pressure. TheECL oil collection system is optional.

L7 , L7 CR



Conditions for the ECL function:

• Switch S130 in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Impact switch S446A or S446B must be activated, to obtain percussion => D550-

CH9/10/ONResult in:• PLC output X17-9/ON => Y106 activated

Note : The ECL pump works for an extended time after the percussion is switched off.This time delay can be adjusted via the HEC3 display.

Adjustable parameters•

Time pulse – length of the pulse, i.e. the signaltime.• Pulses/minute – how many pulses there is per

minute• Extended time – total time of the pumping

cycle (after air flushing stop).

Drilling functions

HECL, DTH hammer lubrication system

Function The HECL pump Y165 is a hydraulic driven lubrication pump that starts pumping as soon asthe Impact/Flushing air is turned ON. The pump receives pulses from the HECL PLC outputX11-16 (30-40 pulses/min) in the electrical cabinet. Lubrication oil is then led through a ¼”hose to the rotation unit, where the lubricating oil and air is mixed. The HECL lubricationpressure gauge is in the cab.

Conditions for the HECL function:

• S130

L8



Switch in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Impact switch S446A or S446B must be activated => D550-CH9/10/ONResult in:• PLC output X11-16/ON => Y165 activated

Note : The HECL pump works for an extended time after the percussion is switched off.This time delay can be adjusted via the HEC3 display.

Adjustable parameters• Time pulse – length of the pulse, i.e. the signal

time.• Pulses/minute – how many pulses there is per



Drilling functions

HECL, COPROD head and sections lubrication system

Function The HECL pump Y165 is a hydraulic driven lubrication pump that starts pumping as soon asthe Flushing air is turned ON. The pump receives pulses from the HECL PLC output X11-16(30-40 pulses/min) in the electrical cabinet. Lubrication oil is then led through a ¼” hose tothe flushing air connection at the rock drill, where the lubricating oil and air is mixed. Thereis no pressure gauge for the HECL lubrication pressure.

Conditions for the HECL function:

• S130

L7 CR



Switch in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Impact switch S446A or S446B must be activated, to obtain air flushing => D550-


Note : The HECL pump works for an extended time after the percussion is switched off.This time delay can be adjusted via the HEC3 display.

Adjustable parameters • Time pulse – length of the pulse, i.e. the signal

time.• Pulses/minute – how many pulses there is per





Damper & DPC-I system


DamperThe rock-drill damper circuit is supplied with oil from Pump1 through a constant flowregulator. The flow regulator is adjusted to correspond to a pressure of 25 bar at the damperhose connection on the rock-drill.

The damper pressure during drilling shows the actual feed force on the drill bit. The pressurecan be read on the pressure gauge in the cabin. During drilling, the damper pressure controlscertain logic valves, which in turn controls the impact pressure (hammer pressure). This isdescribed below as the DPC-I system.

Adj ti g th d

L7 , L7 CR



Adjusting the damper pressureAdjustment of the damper pressure must be done with the damper piston in its rested, forwardposition. To ensure this, the shank adapter can be pulled out to its most forward position.Adjustment of the damper pressure should only be done with the hydraulic oil has reachednormal working temperature, 40ºC (104ºF).

1. Connect a pressure gauge between the damperhose connection and the damper hose on therock-drill.

2. Start the diesel engine and let it run at 1500rpm.

3. Make sure that the shank adapter is in itsforward position, i.e. the damper piston is inits forward position.

4. Turn switch S130 to Drilling position.5. Loosen the lock screw (8b) and adjust thedamper pressure by turning the adjustmentscrew (8a) clockwise to decrease and anti-clockwise to increase the pressure.

6. Tighten the lock screw when the correct setting is achieved.

Read on the gauge on the damper connection the pressure should be:

COP 4050 & COP 4050CR, 25 barThe corresponding pressure read on the cabin gauge: (happens to be higher than the one read

th d ti b it h ll d )


DPC-I System

FunctionThe DPC-I system (Damper Pressure Controlled Impact) controls the impact function by

sensing the damper pressure during drilling. Depending on the damper pressure, impact canbe allowed, stopped or changed between high and low impact pressure. This is done by anumber of logic valves in the rig hydraulic system.

• Logic-I. Prevents activation of impact if the damper pressure is below 45 bar, or stopsimpact if the damper pressure drops below 45 bar in case of, e.g., hose rupture, valvemalfunction or drilling into cavity.

• Logic J Stops impact if the damper pressure exceeds 120 bar in case of e g excessive

L7 , L7 CR



Logic-J. Stops impact if the damper pressure exceeds 120 bar in case of, e.g., excessivefeed pressure or mechanical failure of the damper.

• Logic-A. During normal drilling with high impact pressure, the logic proportional valve Ais activated by the damper pressure through logic valve D. If the damper pressure fallsbelow the preset value of logic-A, it is deactivated. The Pump 1 pressure provided by thehigh impact relief valve 47f is then connected to the low impact relief valve 47e , thus the

low impact relief valve 47e controls the pump pressure.

ROC L7 40CR:• Logic-O. Allows activation of impact when the feed pressure has reached 45 bar and stops

impact when feeding backwards or entering a cavity in the rock.

Warning! Wronged adjusted damper pressure can cause damage to rock-drill, drill rig anddrill string. Adjustments should only be performed by a qualified Atlas Copcoservice technician.

Setting the DPCI systemThe DPCI system can be adjusted either in the workshop or on the drill site. Adjusting in theworkshop generally gives a more exact setting. On the other hand, adjusting during drillingcan result in a setting well adapted to the rock conditions and other system settings.In general, logic-I and logic-O should be set as high as possible without making it difficult to

start impact.

ROC L7 40 :


Setting during drilling – L7 40

Logic-I, Setting during drilling:

1. Check that the damper pressure is adjusted according to “Adjusting the damper pressure”.

2. Start drilling on low impact pressure and collaring feed pressure.3. Adjust the feed pressure slowly towards 0 while observing the damper pressure gauge.

4. When the damper pressure drops below 45 bar as a result of the low feed pressure, impact should bestopped automatically.

5. If needed, adjust logic-I CW to increase the setting or CCW to decrease it.

6. Test the function by starting drilling on low impact pressure and collaring feed pressure. When the drillcradle comes to a stop against the mechanical end stop, impact should shut of immediately. If not, thesetting of logic-I should be increased.

L7



g g

NOTE! The setting of logic-I should be the highest possible without making it difficult to start impact. Thismeans that high collaring feed and damper pressures calls for a higher setting of logic-I.

Logic-A, Setting during drilling:


2. Start drilling. Make a good collaring, and then activate high impact pressure.

3. Slowly decrease the feed pressure while observing the damper pressure gauge.

4. The impact pressure should change from high to low when the damper pressure drops below 50 bar.

5. If needed: Adjust logic-A CCW to lower the setting and CW to increase it.

Logic-J, Setting during drilling:


2. Start drilling on low impact pressure.3. Increase the feed pressure towards maximum while observing the damper pressure gauge.

4. When the damper pressure exceeds 120 bar, impact should be stopped automatically.

5. If needed, adjust logic-J CCW to lower the setting or CW to increase it.

NOTE! During this adjustment there is an increased risk of getting stuck in the hole due to the increased feed pressure. NOTE! In soft rock conditions it can be difficult to force the damper pressure high enough. In this case thedamper pressure regulator can be adjusted temporarily to 120 bar.

40


6. Verification: Increase and decrease the damper pressure a few times in order to verify that impact isstopped when the damper pressure is below 45 bar.

7. De-activate impact and turn off the diesel engine.

8. Tighten the lock nut on logic-I without changing the setting and reconnect the impact pressure hose onthe rock-drill.

9. Adjust the damper pressure according to “Adjusting the damper pressure”. Verify through test drillingthat impact can not be activated unless the drill bit is pressed against the rock.

Logic-A, Setting in workshop:

1. Disconnect and plug the impact pressure hose on the rock-drill.

2. Start the diesel engine, increase the rpm to 1500 and turn switch S130 to Drilling position.

3 Adjust the damper pressure to 50 bar read on the damper pressure gauge in the cabin

L7



3. Adjust the damper pressure to 50 bar, read on the damper pressure gauge in the cabin.

4. Activate drill rotation.

5. Activate high impact pressure. Check the pressure on the impact pressure gauge in the cabin.

6. Slowly adjust logic-A in and out to find the activation point where the impact pressure changes fromhigh to low. CW increases the activation point and CCW lowers it. Finally, adjust slowly CW until theimpact changes to low.

7. Verification: Increase and decrease the damper pressure a few times in order to verify that the impactpressure changes when the damper pressure passes 50 bar.

8. De-activate impact and turn off the diesel engine.

9. Tighten the lock nut on logic-A without changing the setting and reconnect the impact pressure hose onthe rock-drill.

10. Adjust the damper pressure according to “Adjusting the damper pressure”. Verify through test drillingthat the impact pressure changes from high to low when the damper pressure drops below 50 bar if the

feed pressure is lowered.

Logic-J, Setting in workshop:




4. Activate low impact pressure. Check the pressure on the impact pressure gauge in the cabin.

5. Slowly adjust logic-J in and out to find the activation point where the impact pressure disappears fromthe gauge CW increases the activation point and CCW lowers it Finally adjust slowly CW until the


Related logic-valves• Logic-D. It is activated by the pilot signal for drill rotation anti-clockwise. This means

that the DPC-I system is only in effect when drill rotation is active. When logic-D isclosed to damper pressure it is open to the Pump 1 system pressure. This means that whenrotation is not active, the impact pressure will be according to the position of the impactcontrol switch S446A/B, irrespective of the damper pressure.

• Logic-C. It is activated through Y101B (impact low pressure activated) or when feedingbackwards. This excludes logic-E from getting activated. Consequently, in these casesthere can only be low impact pressure. Feeding backwards and activating impact is thecase when back hammer function is switched on. It does not matter which impact button(high or low) is pushed, the impact pressure will stay low anyway.

L7



Note : Impact pressure has the same pressure as the pump pressure, since impact pressure

comes from pump 1. In the diagram they are being distinguished by two different colours toidentify their own circuits.


Setting during drilling – L7 40CR

Logic-I, Setting during drilling:


2. Disable logic-O by turning its adjustment screw 3-4 turns CCW. If this is not done, impact will bestopped due to too low feed pressure during the setting of logic-I.

3. Start drilling on low impact pressure and collaring feed pressure.

4. Adjust the feed pressure slowly towards 0 while observing the damper pressure gauge.

5. When the damper pressure drops below 45 bar as a result of the low feed pressure, impact should bestopped automatically.

6. If needed, adjust logic-I CW to increase the setting or CCW to decrease it.7 V if th t i t t b ti t d ith t k t t d th t i t b ti t d h th

L7 CR



7. Verify that impact can not be activated without rock contact, and that impact can be activated when thebit is pressed against the rock with collaring feed pressure.

8. Readjust logic-O by turning its adjustment screw CW the same number of turns as it was turned CCWin point 1, or according to instruction.

9. Test the function by going into the display and change the setting for “impact stop” (position M0) byadding 0.5 m in menu “Rapid feed stop”. This will deactivate the automatic impact stop. Write downthe original setting! Impact should then cease immediately when the rock drill cradle stops against themechanical end stop. If not, the setting of logic-I should be increased.

10. Re-enter the parameter setting for “impact stop”.

NOTE! The setting of logic-I should be the highest possible without making it difficult to start impact. Thismeans that high collaring feed and damper pressures calls for a higher setting of logic-I.

NOTE! Excessive drilling with too low feed pressure can cause damage to COPROD sections and rockdrill.

Logic-O, Setting during drilling:

1. Start drilling on low impact pressure and your normal collaring feed pressure.

2. Adjust logic-O CW until impact is stopped and then CCW until impact just starts again.

3. Reverse the feed direction. Impact should stop immediately without free hammering.

4. Restart drilling and check that impact starts easily. If not, the setting of logic-O may need to belowered slightly.

NOTE! The setting of logic-O should be the highest possible without making it difficult to start impact.

L i A S i d i d illi


3. Increase the feed pressure towards maximum while observing the damper pressure gauge.

4. When the damper pressure exceeds 120 bar, impact should be stopped automatically.

5. If needed, adjust logic-J CCW to lower the setting or CW to increase it.

NOTE! During this adjustment there is an increased risk of getting stuck in the hole due to the increased feed pressure. NOTE! In soft rock conditions it can be difficult to force the damper pressure high enough. In this case thedamper pressure regulator can be adjusted temporarily to 120 bar.

Setting in workshop

Logic-I, Setting in workshop:


L7 CR





4. Activate drill-feed forward. This is required to enable activation of impact on COPROD rigs (logic-O).When the rock-drill almost reaches its lower end position, impact will be stopped by the impact stopcheck. This can be avoided by adding 0.5 m to the parameter for “impact stop”. Write down theoriginal setting!

5. Activate low impact pressure. Check the pressure on the impact pressure gauge in the cabin.

6. Slowly adjust logic-I in and out to find the activation point where the impact pressure disappears fromthe gauge. CW increases the activation point and CCW lowers it. Finally, adjust slowly CCW until theimpact pressure appears on the gauge again.

7. Verification: Increase and decrease the damper pressure a few times in order to verify that impact isstopped when the damper pressure is below 45 bar.

8. De-activate impact and feed and turn off the diesel engine.

9. Tighten the lock nut on logic-I without changing the setting, re-enter the parameter setting for “impactstop” and reconnect the impact pressure hose on the rock-drill.

10. Adjust the damper pressure according to “Adjusting the damper pressure”. Verify through test drillingthat impact can not be activated unless the drill bit is pressed against the rock, and that impact can beactivated when the bit is pressed against the rock with collaring feed pressure.

Logic-O, Setting in workshop:






9. Tighten the lock nut on logic-J without changing the setting, re-enter the parameter setting for “impactstop” and reconnect the impact pressure hose on the rock-drill.

10. Adjust the damper pressure according to “Adjusting the damper pressure”. Verify through test drillingthat impact is stopped when the damper pressure exceeds 120 bar if the feed pressure is increased to

maximum.

Related logic-valves• Logic-D. It is activated by the pilot signal for drill rotation clockwise. This means that the

DPC-I system is only in effect when drill rotation is active. When logic-D is closed todamper pressure it is open to the Pump 1 system pressure. This means that when rotationis not active, the impact pressure will be according to the position of the impact controlswitch S446A/B, irrespective of the damper pressure.

• Logic-C. It is activated through Y101B (impact low pressure activated).

L7 CR



Note : Impact pressure has the same pressure as the pump pressure, since impact pressurecomes from pump 1 In the diagram they are being distinguished by two different colours to



Pilot lever

Y175

Q

BPump p.

F e e

d

p .



2

I

O

J

Y101AY101B

D

C

low

A

Y101C

DPCI on ROC L7 40



3



Dust collector, DCT

Dust collector, DCTConditions for the DCT suction functions:

• Switch S130 in drilling position => D552-CH1/ON• Sensor B118 activated, RHS arm in carousel => PLC input X10-5/ON• Compressor load switch S180 must be on => D552-CH9/ON• Flushing/Impact switch S446A or S446B must be activated, in either flushing or

impact mode => D550-CH9/10/ON• Switch S181 must be in suction position => D552-CH12/ON

The DCT system includes functions for starting the fan, controlling suction ON/OFF and

cleaning the filters. The hydraulic power is supplied from pump 3.



DCT hydraulic systemWhen the drilling/tramming switch S130 is in drilling position, it activates DCT fan motorsolenoid Y250 . This means that the fan is running as soon as the switch is in drilling positionbut there will not be any suction until the fan housing outlet is opened. The running speed ofthe DCT fan motor 14 is set by the pressure relief valve 13a to around 5800 rpm @ 150 barfor L7 40 , L7 40 CR ; and to around 5000 rpm @ 150 bar for L8 30 .The speed can be changed by adjusting the screw on pressure relief valve 13a.

When the fan motor is stopped by turning switch S130 away from drilling position, the pilotoperated relief valve 13b acts as a brake. It creates counter pressure in the return line when itis no longer pilot opened by the pump pressure and is set to stop the fan wheel in 8 seconds.The stop time can be changed by adjusting the screw on pressure relief valve 13b.

The fan motor drain connection is fitted with restrictor 15 to keep a sufficient amount of oilinside the housing for cooling purposes.

Dust collector, DCT

DCT electrical system• Starting the DCT suctionThe fan housing outlet is operated by a hydraulic cylinder controlled by solenoid valve Y253 .Y253 is controlled by PLC output X18-7, and will be activated if S181 is ON (input D551-

CH12) and S446 is in reduced or full air/impact position (input D550 CH-9/10). To activateflushing air only, press S446A for shorter than 0.5 seconds, to start impact, press S446A forlonger than 0.5 seconds. Normally, switch S181 is kept in the ON position to allow thesuction to be automatically controlled by the impact switch.

• DCT filter cleaningWhen PLC output X18-7 is activated, it also activates the four filter cleaning valves Y251A-

D alternately. The filter cleaning valves quickly opens and closes to create pressure shocks ofcompressed air to clean the filters.The length of each cleaning pulse can be adjusted in the “Time pulse” data entry field in the



g g p j p ydisplay. The time between each pulse can be adjusted in the “Pulses/minute” data entry fieldin the display. The pulse time is set to 0.5 seconds (can be set up to 1 second) and the pulsecan be set between 6 to 20 times per minute, depending on moisture of the drill dust. If thedust is moist the pulse is set to maximum 20 times, if the drill dust is very dry the pulse timeis set to minimum 6 times. Factory setting is 10 pulses/minute.

When the DCT switch S181 is OFF or when impact is shut off by S446 , the control systemactivates valves Y251A-D simultaneously to clean the DCT filters. The cleaning time can beadjusted in the “Extended time” data entry field in the display.

DCT air systemThe air supply to the DCT is limited to 7 bar by pressure reducing valve and protected by a8.5 bar safety valve. Solenoid valves Y251A-D opens alternately to clean the DCT filters.

DCT adjustable parameters• Time pulse – length of the pulse, i.e. the

signal time.• Pulses/minute – how many pulses there is per

minute• Extended time – total time of the cleaning

DCT System

Input / Signal

Switch S130 drilling positionCompressor load switch S180 on

Flushing/impact switch S446A or B on

DCT switch S181 on



1



Y250

Y253

Y251A



3

DCT fan on +hatch open

D C T

- h a t c h



4

Y253

Y250

170 bar

100 bar

Pump 3

Y251A

Pressure vessel



5

DCT filter 1DCT filter 2DCT filter 3DCT filter 4

Y251A-D



6

DCT off,cleaning

D C T

- h a t c h



7

Y250

Y251A Y251B

Y251DY251C



8



9

Y250

100 bar



Protective functions


RPC-F system – L7 40 RPC-F, Rotation Pressure Controlled Feed.When drilling, the drill string must have a certain rotation torque in order to keep all the rodcouplings tightened. Loosened joints increases the loss of impact energy transmitted to thedrill bit and leads to damage of the threads with drill steel breakage as a possible result.However, too high rotation torque also has disadvantages:

• The couplings can get “over-tightened”, which makes itdifficult to loosen the couplings when withdrawing the drillstring.

• Higher load on the rock drills rotation driver, thus shorterlife length.

• Jerky rotation could cause the anti-jamming to activate

L7



often.

Rotation torque is achieved by feed force, and will varydepending on different rock layers. The RPC-F system will

adapt the feed force during drilling, maintaining only therequired rotation torque. The RPC-F valve, 44 , senses thepressure in the rotation circuit (rotation torque) and varies thefeed pressure between the settings of the high feed pressurevalve 47b and the low feed pressure valve 47a to maintain therequired rotation torque.


Anti-Jamming system

Devices The drill rig is equipped with two types of anti-jamming device.

•

Flushing air flow switch – L740

, L740

CR• Rotation pressure switch – All typesBoth changes the direction of feed from forward to backward, if activated by insufficientflushing air or too high rotation pressure, in order to avoid getting stuck.

Logic function of drill leverSince the anti-jamming inverts the feed direction, pulling the drill lever for feeding backwardswould result in feed forward movement. To avoid this there is a pressure switch, B262 ,connected to the pilot pressure line for feed backwards. B262 is connected to PLC input X16-16, which, when active, inhibits the anti-jamming output X11-11.

Fl hi i fl i h B142 L7 40 L7 40CR



Flushing air flow switch, B142 – L7 40 , L7 40CRConditions for the flow switch activated anti jamming function:

• Switch S130 in drilling position => D552-CH1/ON•

SensorB118

activated, RHS arm in carousel =>PLC input X10-5/ON• Compressor load switch S180 must be on => D552-CH9/ON• Flushing air switch S100 must be in full flushing position => D551-CH1/ON • Flushing/Impact switch S446A or S446B must be activated, in either flushing or

impact mode => D550-CH9/10/ON• Pressure switch B262 not activated => PLC input X16-16/OFF• Signal from flow switch B142 => PLC input X11-7/ON

Result in:• PLC output X11-11/ON => Solenoid Y109 activated

NOTE: The anti-jamming will be activated for at least 2 sec.

The flow switch is connected after the flushing airvalves and senses the pressure drop over arestriction, venture pipe, in the flushing air line.The difference in pressure between the two

connections is keeping the contact of the flowswitch open.


Adjusting B142 – L7 40 , L7 40CR The flushing air flow switch can only be set during drilling and only with full flushing airactivated.

1. Unscrew the cover of the flow switch.2. Drill almost down to the greatest depth that will be drilled on the site. Make sure full

flushing is activated, switch S100, position (a). (see figure below)3. Turn the adjustment screw (1) anti-clockwise until the rock-drill starts to back up. The

higher the figure on the adjustment scale, the more sensitive the flow switch will be.Factory setting is 30 mbar.

4. Turn the adjustment screw (1) back clockwise until the rock-drill returns downwards.5. Drill another whole to verify that the flow switch is not unintentionally activated due

to too sensitive setting. If so, back the adjustment screw off a little bit more.

6. Assemble the cover of the flow switch.When changing dimension of drill-bit or drill steel, or if the hole depth is changed, it can benecessary to re-adjust the flow switch in order to maintain a good anti-jamming protection.



Rotation pressure switch, B134 – L7 40 , L7 40CR, L8 30 Conditions for the rotation pressure activated anti-jamming function:

• Switch S130 in drilling position => D552-CH1/ON• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Impact switch S446A or S446B must be activated => D550-CH9/10/ON• Pressure switch B262 not activated => PLC input X16-16/OFF• Signal from pressure switch B134 => PLC input X11-6/ON

L7

S100a

b

L7 CR

S100

a

b


Adjusting B134Setting of the activation pressure of the anti-jamming is done on the pressure switch B134itself. The activation pressure can be difficult to adjust during drilling because it is usuallydifficult to force the rotation pressure high enough. In stead, a simulation can be done.Warning! During the setting, the rock-drill will reverse automatically.1. Turn the knob for adjustment of the drill rotation speed anti-clockwise until the spring

pressure is released. The rotation speed will now be 0 rpm.2. For CR and DTH: Feed the rock drill down until the coupling sleeve of the drill steel is in

the upper break out table. Close the upper break out table to lock the sleeve.For TH: Feed the rock drill down until the drill bit is in the upper drill steel support. Closethe upper drill steel support to lock the drill bit.

3. Activate drill rotation.

4. Activate drill feed.5. Slowly turn the rotation speed controlclockwise while observing the drill rotationpressure gauge. When the pressure exceeds the



p g g ppreset value of the pressure switch B134, thefeed direction will change. This can be seen asthe feed pressure turns to 0 and the rock drilltries to pull out of the drill steel support.

6. Turn the rotation speed control anti-clockwiseto lower the rotation pressure and allow the feedto change back to downwards.

7. If the setting needs to be changed this can bedone by turning the adjustment screw on B134clockwise to increase the activation pressure oranti-clockwise to decrease it.

8. Repeat point 1 – 6 to verify the new setting.9. Re-adjust the rotation speed to normal.

Feed & pump pressure during anti-jamming – L7 40 , L7 40CR Impact/pump 1 pressure:When feed backwards is automatically activated during anti-jamming, PLC deactivatesoutput X11-9 for impact activation. This deactivates Y101A, and leaves logic valve B idlehence blocking the access to the pressure relief valves 47e and 47f which control the pump

1 pressure. The pump 1 system pressure is then limited by pressure relief valve 4d ,together with the delta-p pressure, pump 1 will be working at 250 bar (LS return line +

RPCF for L7 40

Maintaining only the required rotation torque for drilling



1

Anti-jamming

Two anti-jamming devices – Monitoring of the flushing air flow (L7 40 , L740 CR)

– Monitoring of the rotation pressure

Inverts the feed direction incase of insufficient air flow or too highrotation pressure



2

Factory settings:

– 30mBar pressure drop over the venturi – 80 Bar rotation pressure

Anti-jammingInput / Signal

S130/1 - D552,CH 1/ONS180/A3 – D552, CH 9/ON

S446/A/B – D550, CH 9/10/ON

S100/A3 – D551, CH 1/ON

X11-7 B142



3

X11-5 B134

Output on indicator cardX11-11 Y109

B142



4

Y116Y115

M a

i n a

i r f l o w

B134

Y169



5

Y121A

Pump 4

B142

L740 , L7 40 CR

B134

L740 , L7 40 CR, L8 30Page 28



6

Y109

L740 , L7 40 CR, L8 30

Anti-jamming

Page 27

Page 35

Y109 is activated by

either B142 or B134.



B262

Pilot lever

CY109Feed backwards



9



Length measurement

Length measurement

Hole depth measurementData from pulse sensor B172 is handled for measuringhole length, with stop signal for drilling when set lengthis reached. A choice can be made between hole depthand hole length which stops the drilling.

The first row in the menu view to the right (figure 2, 3)shows actual length/depth of the hole.

• Hole length is the actual number of metres thathave been drilled.

• Hole depth is the vertical distance fromground level to the bottom of the hole.

Hole length and hole depth can be set on a menu, pushenter key according to the selection on figure 1.

Figure 1



The value in the square box shows the required holelength/hole depth. The length or depth can be set from0.1m- 99.9m . When the hole has reached the requireddepth/length the PLC automatically sets the drill output“low”. The drilling can continue by restarting thedrilling functions.

The second row displays the penetration rate.The third row displays the position of the drill bit.

EXAMPLE: If the hole is 10m the first row shows10m. If the drill steel is run backward the drill bit’sposition starts to count backward to inform the operatorof the distance from the bit to the bottom of the hole.

: Reset of the hole depth

: Numbers of performed couplings

Figure 2

Figure 3

Length measurement

Basic conditions for measurement:• Correct length of drill steel must be chosen in the drill steel menu.• The length measurement system must be reset before the start of drilling.• Impact must be activated for measuring hole length/depth. Bit position will be

measured even without impact.

During rod handling, the HEC system pause the drill length/depth measuring. This means thatnegative distance created when backing up to add a new rod is not taken into consideration bythe system.The start of the pause is defined by a signal coming from a pressure switch B128 along withother conditions (see below). B128 is activated when unthreading the rock drill from the rod.

Conditions for blocking:• Upper drill steel support closed (for RHS 102); lower break out table closed (for RHS140).

• Unthreading activated => B128 activated. • Impact interrupted.



Impact interrupted.

To exit standby and re-enter measuring mode after adding a drill steel, the followingconditions must be fulfilled.

Conditions for restarting measurement after rod handling:• Upper drill steel support opened (for RHS 102); lower break out table opened (for

RHS 140). • Impact activated. • The cradle must be retracted to the upper position, i.e. 90% of the length for the

chosen rod.

Drill stop activation for reached depthDrill stop activation for reached depth is a build-in function of the HEC system. When the

drilled metre on the display equals to the metre that has been entered , alldrilling functions will be stopped. The drill lever is then automatically shifted to rapidfeed/threading mode.

Rod Handling System, RHS 102


Conditions common for all RHS functions:

• Switch S130 in drilling position => D552-CH1/ON• Switch B379 (operator in chair) must be activated =>

D550-CH1/ON• The impact control switch S446A/B must be OFF =>

D550-CH9/10/OFF

The functions of the different rod handling movements areelectrically operated by the RHS control lever S111 . The

control lever sends a signal to the PLC which, when the rightinputs are present, activates the corresponding hydraulicvalve in order to perform one of the following movements:

RHS control lever S111:ROD CAROUSEL ROD GRIPPER

S111

L7



RODTRANSFER

CAROUSELROTATION

ROD GRIPPER

-To carousel -Clockwise -Hard grip-To drill centre -Anti-clockwise -Guide grip

-Open

The hydraulic power is supplied from Pump 1 and is limited to 200 bar by pressure reducingvalve 91 . Some functions have individual pressure reducers to further limit the pressure.

d f

RHS arm → drill centre/hard grip(Note : lever has a latch in this position)

Carousel rotationanti-clockwise

Carouselrotation

clockwise

RHS arm → carousel/hard grip

Button for opening gripper claws


Control lever S111 is mechanically latched during this movement, that is to say one push onthe lever and the lever stays there, instead of a spring return to centre position. With the leverin position it will carry out the whole movement until the rod is moved into the drill centre.The function has been introduced to prevent grippers to automatically switch to loose gripmoved into the drill centre.

Loose grip can be achieved by pulling the lever back to the neutral position, when the armreached its end position (drill centre).

L7



Hard grip stage S111 back to neutral Loose grip stage

NOTE! Always put the rod grippers in loose grip before the threads meet in order to let therod in the rod gripper rotate. The threads will otherwise be easily damaged.

Additional conditions:

- Sensor B118 activated, PLC input X10-5/ON. (Arm in carousel.) - The rod grippers should be in hard grip during this movement as the PLC output X12-

d h l h l d f h


To carousel without a rod

CLAIM: The carousel could still have rods in it or not, arm has to move back to carousel inorder to get the next rod to drill; also to allow drilling.

Additional conditions:- Sensor B120 activated, PLC input X10-3/ON. (Arm in drill centre.) - RHS control lever S111 top button pushed, input D551-CH6/ON. The rod grippers

should be in open grip during this movement.- RHS control lever S111 to position (a), input D551-CH2/ON. When all the conditions are met, this function will take place:• Solenoid valve Y300 will be activated by PLC output X12-3. (Rod grippers are open.)• Solenoid valve Y301A will be activated by PLC output X12-4. The cylinder speed is

limited by restrictors 82 . (Arm transfer towards carousel starts.)

When the rod transfer arm have reached position carousel, sensor B118 will be activated,PLC i t X10 5/ON Thi lt i

L7



PLC input X10-5/ON. This results in:• PLC output X12-4/ON, Y301A activated. (Arm transfer towards carousel stops

mechanically.)

SEQUENCE COMPLETE

To carousel with a rod

CLAIM: The carousel empty or not, rods are supposed to be put back to the carousel.

Additional conditions:- Sensor B120 activated, PLC input X10-3/ON. (Arm in drill centre.) - The rod grippers should be in hard grip during this movement as the PLC output X12-

8 and X12-3 are OFF. This is also the normal condition of the grippers.- RHS control lever S111 to position (a), input D551-CH2/ON. When all the conditions are met, these two functions will take place in its order:• Solenoid valve Y301A will be activated by PLC output X12-4. The cylinder speed is

limited by restrictors 82 . (Rod transfer towards carousel starts.)


To drill centre without a rod

CLAIM: The carousel could be empty or not, the grippers are in hard grip state in carousel.This is the case when drilling has been done, rods are being pulled out and need to

be picked up from the drill centre.

Loose grip is needed first when the grippers have been moved into the drill centre, becauseonly loose grip can allow the upper rod to rotate out of the lower rod/drill bit which is beingheld in the drill steel support. Loose grip can be achieved by pulling the lever to the neutralposition. Manual switching is needed here since the lever is latched in this position.

Once the upper rod has been unthreaded, hard grip needs to be activated in order to allow therock drill to be unthreaded. Hard grip can be achieved by pulling the lever backwards to the“arm to drill centre” position, thus breaking the conditions for loose grip.

L7



Loose grip stage S111 to arm to drill centre Hard grip stage

Additional conditions:Sensor B118 activated PLC input X10 5/ON (Arm in carousel )


Carousel rotationAdditional conditions:• The rod gipper arms must be in carousel position, sensor switch B118 ON, PLC input

X10-5/ON.• RHS control lever S111 , top button pushed, input X550-CH6/ON.• RHS control lever S111 , to position (c) or (d), input X550-CH4 or CH5/ON.The carousel stop positions are determined by the two sensors B182 (CCW) and B183 (CW).The carousel rotation motor solenoid valve Y303A/B is activated by PLC output X15-2(CWW) and X15-1 (CW).When rotation is activated it will continue until the corresponding sensor is activated, givinginput to PLC X14-8 and X13-1 respectively. The rotation speed is limited by restrictors 84 .To facilitate the rotation of the carousel, the rod grippers must be the rod grippers must be at

the carousel position to allow rotation, i.e. B118 activated.

Rod grippersThere are three rod gripper positions, which are controlled bysolenoid valves Y300 and Y306 .

L7



o Hard gripAdditional conditions:None. Hard grip is the normal state of the grippers. None of thesolenoid valves are activated with the result that system pressure,200 bar, is acting to keep the gripper closed.

o Open grippersAdditional conditions:• RHS control lever S111 , top button pushed, input X550-

CH6/ON.Solenoid valve Y300 is activated by PLC output X12-3.

o Guide grip (loose grip)Additional conditions:• RHS control lever S111 must be in middle position, no signal

from the RHS switch to the PLC.• Sensor B120 activated, PLC input X10-3/ON.Guide grip can only be achieved when the rod grippers are in thedrill-centre position and when there is no signal from RHS switchto the PLC.Solenoid valve Y306 in the guide grip valve block 80 , is activated


Sleeve retainer (Option)Additional conditions:• Sleeve retainer switch S182 ON, input D551-CH13/ON.Solenoid valve Y309 is activated by PLC output X15-3. The cylinder speed is limited byrestrictors 83 . The sleeve retainer can only be folded out when the rod grippers are in drillcentre position and in hard grip mode. The rod transfer movements which include “arm tocarousel” function are electrically blocked as long as the sleeve retainer is activated.

Drill steel supports & suction hoodConditions for these functions:• The Drilling/Tramming switch S130 must be in drilling position

o Drill steel supports, upper and lower

The drill steel supports are controlled by switches S119 (upper) and S187 (lower), whichoperates solenoid valves Y361A-B and Y350A-B respectively. The cylinder speed islimited by restrictors 85 and 86 .o Suction hoodThe suction hood is controlled by switch S167 , which operates solenoid valve Y357 . The

L7



hydraulic pressure downwards is limited by pressure reducing valve 88 set to 40 bar, andthe cylinder speed is limited by restrictor 87 .

NOTE: It’s important that during drilling, the drill steel supports should be carefully operatedto prevent the drill rods colliding with them.

Service winch (Option)The service winch is a pure hydraulic function that works aside of the PLC. Solenoid valveY208 controls the moving direction of the winch, and it is activated by a lever that sits on thelower drill steel support.

RHS 102 – L7 40

Input / Signal

Switch S130 in Drilling pos.Operator in chair switch B379

Flushing/impact switch S446A or B off



1

RHS 102 – L7 40

Input / SignalS130/1 - D552, CH 1/ON

B379 - D550, CH 1/ON

S446A/B - D550, CH 9/10/OFF

S111 - D551, CH 2/3/4/5/6/ON

X10-5 B118X10-3 B120

X15-2 B182



2

X15-1 B183

Output on indicator cardX17-1 Y301A/B

X13-11 Y303A/B

X12-3 Y300

X12-8 Y306

1 B118

L740

Page 33



3

B120

Y301BRod transfer from carousel

1

2

Page 31

Page 41

200 bar

1 )



4

Y301B

R H S ( f r o m

p u m p

1

B182 2

L740

Y303A 1 2 Rotation stops for 1 second.

Page 41



5

2

Page 32 Carousel rotation CCW

1 )

200 bar



6

R H S ( f r o m

p u m p

1

Y300

Y303A

1 )

Y306

200 bar



7

R H S ( f r o m

p u m p

1

Y300





Conditions common for all RHS functions:

• Switch S130 in drilling position => D552-CH1/ON• Switch B379 (operator in chair) must be activated =>

D550-CH1/ON• The impact control switch S446A/B must be OFF =>

D550-CH9/10/OFF

The functions of the different rod handling movements areelectrically operated by the RHS control lever S111 . The control

lever sends a signal to the PLC which, when the right inputs arepresent, activates the corresponding hydraulic valve in order toperform one of the following movements:

RHS control lever S111:RODTRANSFER

CAROUSELGATE

CAROUSELROTATION

RODGRIPPER

GRIPPERROTATION

L8 , L7 CR

S111

Figure: example, L8 30 left panel



TRANSFER GATE ROTATION GRIPPER ROTATION-To carousel -Open -Clockwise -Hard grip -To carousel-To drill centre -Closed -Anti-clockwise -Guide grip -To drill centre

-Open

The hydraulic power is supplied from Pump 1 and is limited to 200 bar by pressure reducingvalve 97 . Some functions have individual pressure reducers to further limit the pressure.

RHS arm → drill centre/hard grip(Note : lever has a latch in this position)

Carousel rotationanti-clockwise

Carouselrotation

clockwise

RHS arm → carousel/hard grip

Button for opening gripper claws


To drill centre with a tube

CLAIM: The carousel loaded, the grippers are in the carousel holding on to the tube which isgoing to moved, the initial holding state should be hard grip.

Control lever S111 is mechanically latched during this movement, that is to say one push onthe lever and the lever stays there, instead of a spring return to centre position. With the leverin position it will carry out the whole sequence until the tube is moved into the drill centre.The function has been introduced to prevent grippers to automatically switch to loose gripwhen moved into the drill centre.

Loose grip can be achieved by pulling the lever back to the neutral position, when the armreached its end position (drill centre).

L8 , L7 CR




Additional conditions:

- Sensor B118 activated, PLC input X10-5/ON. (Arm in carousel.)

- The rod grippers should be in hard grip during this movement as the PLC output X12-8 and X12-3 are OFF. This is also the normal condition of the grippers.

- RHS control lever S111 to position (b), input D551-CH3/ON.

When all the conditions are met, these two functions will take place in its order:• Solenoid valve Y310 will be activated by PLC output X15-4. The cylinder speed islimited by restrictors 86 . (Carousel door opens.)

• Solenoid valve Y301B will be activated by PLC output X12-5. The cylinder speed islimited by restrictors 82 . (Tube transfer towards dill centre starts.)

When the tube transfer arm has reached the position between the carousel and drill centre,sensor B119 will be activated, PLC input X10-2/ON. This results in:

• PLC output X12-5/OFF, Y301B deactivated. (Tube transfer towards drillcentre stops.)

• PLC output X16-12/ON, Y311B activated. (This will rotate the rod grippersfrom facing the carousel to facing the drill centre.)

The gripper rotation sequence will continue for 3 seconds, after that:

L8 , L7 CR



The gripper rotation sequence will continue for 3 seconds, after that:• PLC output 16-12/ON, Y311B activated. (Even though Y311B is activated,

but the gripper rotation has stopped mechanically.)• PLC output X15-4/OFF, Y310 deactivated. (Carousel door closes.)• PLC output X12-5/ON, Y301B activated again. (Tube transfer towards

drill centre continues.)

When the tube transfer arm have reached position drill centre, sensor B120 willbe activated, PLC input X10-3/ON. This results in:

• PLC output X12-5/ON, Y301B activated. (Tube transfer towards drillcentre stops mechanically.)

• PLC output X16-12/ON, Y311B activated. (Gripper rotation has stoppedmechanically.)

• PLC output X12-8/OFF and X12-3/OFF, Y306 and Y300 deactivated.(Hard grip)

SEQUENCE COMPLETE


To carousel without a tube

CLAIM: The carousel could still have tubes in it or not, arm has to move back to carousel inorder to get the next tube to drill; and/or moving back to carousel to allow drilling.

Additional conditions:- Sensor B120 activated, PLC input X10-3/ON. (Arm in drill centre.)

- RHS control lever S111 top button pushed, input D551-CH6/ON. The rod grippersshould be in open grip during this movement.

- RHS control lever S111 to position (a), input D551-CH2/ON.

When all the conditions are met, this function will take place:• Solenoid valve Y310 will be deactivated by PLC output X15-4. (Carousel door is

closed.)• Solenoid valve Y300 will be activated by PLC output X12-3. (Rod grippers are open.)• Solenoid valve Y301A will be activated by PLC output X12-4. The cylinder speed is

limited by restrictors 82 . (Arm transfer towards carousel starts.)

When the tube transfer arm has reached the position between the carousel and drill centre,

L8 , L7 CR



psensor B119 will be activated, PLC input X10-2/ON. This results in:

•

PLC output X12-4/OFF, Y301A deactivated. (Arm transfer towards carouselstops.)• PLC output X18-1/ON, Y311A activated. (This will rotate the rod grippers

from facing the drill centre to facing the carousel.)

The gripper rotation sequence will continue for 3 seconds, after that:• PLC output 18-1/ON, Y311A activated. (Even though Y311A is activated,

but the gripper rotation has stopped mechanically.)• PLC output X12-4/ON, Y301A activated again. (Arm transfer towards

carousel continues.)

When the tube transfer arm have reached position carousel, sensor B118 will beactivated, PLC input X10-5/ON. This results in:

• PLC output X12-4/ON, Y301A activated. (Arm transfer towardscarousel stops mechanically.)

• PLC output X18-1/ON, Y311A activated. (Gripper rotation has stoppedh i ll )


To carousel with a tube

CLAIM: The carousel empty or not, tubes are supposed to be put back to the carousel.

Additional conditions:- Sensor B120 activated, PLC input X10-3/ON. (Arm in drill centre.)

- Sensor B178 deactivated, PLC input X16-1/OFF. (No tube in carousel outlet.)

- The rod grippers should be in hard grip during this movement as the PLC output X12-8 and X12-3 are OFF. This is also the normal condition of the grippers.

- RHS control lever S111 to position (a), input D551-CH2/ON.

When all the conditions are met, these two functions will take place in its order:• Solenoid valve Y310 will be activated by PLC output X15-4. The cylinder speed is

limited by restrictors 86 . (Carousel door opens.)• Solenoid valve Y301A will be activated by PLC output X12-4. The cylinder speed is

limited by restrictors 82 . (Tube transfer towards carousel starts.)


L8 , L7 CR



• PLC output X12-4/OFF, Y301A deactivated. (Tube transfer stops.)•

PLC output X18-1/ON, Y311A activated. (This will rotate the rod grippersfrom facing the drill centre to facing the carousel.)

The gripper rotation sequence will continue for 3 seconds, after that:• PLC output 18-1/ON, Y311A activated. (Even though Y311A is activated,

but the gripper rotation has stopped mechanically.)• PLC output X12-4/ON, Y301A activated again. (Tube transfer towards

carousel continues.)

When the tube transfer arm have reached position carousel, sensor B118 will beactivated, PLC input X10-5/ON. This results in:

• PLC output X12-4/ON, Y301A activated. (Tube transfer towardscarousel stops mechanically.)

• PLC output X18-1/ON, Y311A activated. (Gripper rotation has stoppedmechanically.)

• PLC output X15-4/OFF, Y310 activated. (Carousel door closes.)SEQUENCE COMPLETE


To drill centre without a tube

CLAIM: The carousel could be empty or not, the grippers are in hard grip state in carousel.This is the case when drilling has been done, tubes are being pulled out and need to

be picked up from the drill centre.Loose grip is needed first when the grippers have been moved into the drill centre, becauseonly loose grip can allow the breakout table to take place and then allow the upper tube torotate out of the lower tube/drill bit which is being held in the lower breakout table. Loosegrip can be achieved by pulling the lever to the neutral position. Manual switching is neededhere since the lever is latched in this position.

Once the upper rod has been unthreaded, hard grip needs to be activated in order to allow therotation unit to be unthreaded. Hard grip can be achieved by pulling the lever backwards tothe “arm to drill centre” position, thus breaking the conditions for loose grip.

L8 , L7 CR




Additional conditions:- Sensor B118 activated, PLC input X10-5/ON. (Arm in carousel.) - RHS control lever S111 top button pushed, input D551-CH6/ON. The rod grippers

should be in open grip during this movement.- RHS control lever S111 to position (b), input D551-CH3/ON.

When all the conditions are met, this function will take place:• Solenoid valve Y310 will be deactivated by PLC output X15-4. (Carousel door isclosed.)

• Solenoid valve Y300 will be activated by PLC output X12-3. (Rod grippers are open.)• Solenoid valve Y301B will be activated by PLC output X12-5. The cylinder speed is

limited by restrictors 82 . (Arm transfer towards dill centre starts.)


• PLC output X12-5/OFF, Y301B deactivated. (Arm transfer towards dill centrestops.)

• PLC output X16-12/ON, Y311B activated. (This will rotate the rod grippersfrom facing the carousel to facing the drill centre.)

L8 , L7 CR



The gripper rotation sequence will continue for 3 seconds, after that:•

PLC output X16-12/ON, Y311B activated. (Even though Y311B isactivated, but the gripper rotation has stopped mechanically.)• PLC output X12-5/ON, Y301B activated again. (Arm transfer towards drill

centre continues.)

When the tube transfer arm have reached position drill centre, sensor B120 willbe activated, PLC input X10-3/ON. This results in:

• PLC output X12-5/ON, Y301B activated. (Arm transfer towards drillcentre stops mechanically.)

• PLC output X16-12/ON, Y311B activated. (Gripper rotation has stoppedmechanically.)

SEQUENCE COMPLETE

Carousel rotationAdditional conditions:• The rod gipper arms must be in drill centre position or in the middle position, sensor




Drill steel supports & suction hoodConditions for these functions:• The Drilling/Tramming switch S130 must be in drilling position

o Drill steel supports, upper and lower – L8 30 The drill steel supports are controlled by switches S119 (upper) and S187 (lower), which

operates solenoid valves Y361A-B and Y350A-B respectively. The cylinder speed islimited by restrictors 91 and 92 .o Drill steel support, upper and lower – L7 40CRBoth the upper and lower drill steel supports are controlled by one switch S187 , whichoperates solenoid valves Y361A-B . The cylinder speed is limited by restrictor 91 .o Suction hoodThe suction hood is controlled by switch S167 , which operates solenoid valve Y357 . Thehydraulic pressure downwards is limited by pressure reducing valve 94 set to 40 bar, andthe cylinder speed is limited by restrictor 93 .

Breakout table and rock drill lockConditions for these functions:• The Drilling/Tramming switch S130 must be in drilling position

o Breakout wrench, clockwise and anti-clockwise rotation

L8 , L7 CR



The Breakout wrench is controlled by switch S258 , which opens solenoid valves Y352A-

B respectively. The cylinder speed is limited by restrictors 87 .o Breakout table, upper and lowerThe breakout table is controlled by switch S260 (upper) and S259 (lower), which operatessolenoid valves Y356A-B and Y354A-B respectively. The pressure to the upper breakouttable cylinder limited by pressure reducing valve 88 , and the pressure to the lowerbreakout table cylinder is limited by pressure reducing valve 89 .o Rock drill lock rotation – L7 40CR onlyThe rock drill lock is controlled by switch S257 , which opens solenoid valve Y359 . Thehydraulic pressure to the cylinder is limited by pressure reducing valve 98 set to 50 bar.

Service winch (Option)The service winch is a pure hydraulic function that works aside of the PLC. Solenoid valveY208 controls the moving direction of the winch, and it is activated by a lever that sits on thelower drill steel support.



RHS 140 – L740

CR, L830


Operator in chair switch B379



1

RHS 140 – L740

CR, L830

Input / SignalS130/1 - D552, CH 1/ON

B379 - D550, CH 1/ON

S111 - D551, CH 2/3/4/5/6/ON

X10-5 B118

X10-2 B119

X10-3 B120X15-2 B182

X15-1 B183

Output on indicator card



2

Output on indicator cardX11-13 Y310

X17-1 Y301A/B

X11-14 Y311A/B

X13-11 Y303A/BX12-3 Y300

X12-8 Y306

1 B118

Page 33

L830 , L7 40CR



3

Y3101

Page 42 Tube transfer from carousel 1

B1193

Y301B

2 3 Off for 3 seconds when B119 is activated.Page 41

L830 , L7 40CR



4

Y311B

3 On when B119 is activated.

Tube transfer from carousel 2

Page 31

Page 42

B1193

Y301B

2 3 Off for 3 seconds when B119 is activated.Page 41

L830 , L7 40CR



5

Y311B

3 On when B119 is activated.

Tube transfer from carousel 2

Page 31

Page 42

Y301B

4 3 seconds later.Page 41

L830 , L7 40CR



6

B1205

Page 31Tube transfer from carousel 3

200 bar

u m p

1 )



7

Y310

Y311BY301B

R H S ( f r o m

p u

B182 2

Y303A 1 2 Rotation stops for 1 second.

Page 41

L830 , L7 40CR



8

Page 32 Carousel rotation CCW



200 bar

u m p

1 )

Y306



10

R H S ( f r o m

pY300

Extractor unit (Option)

Extractor unit (Option)The extractor function of the rock-drill consists of a hydraulic piston in the front part of therock-drill and a logic valve for the activation of it, the unit is also known as the back hammer.The hydraulic power is supplied from Pump 1.

The extractor unit is used when the rock conditions vary a lot and there is a large risk of jamming. The function of the extractor unit is to provide reverse percussion to the shankadapter and thus the drill string and drill bit. The shank adapter for rock-drills equipped withan extractor unit has a special flange that receives the reverse percussion force. Since theshank adapter is pressed into the rock-drill by the feed force during normal drilling, it workswithout the flange meeting the extractor piston.

The extractor piston lifts the shank-adapter to enable the impact piston to reach it whenfeeding backwards in a jam situation (see picture below).

extractorpiston

L7



Activating the extractorDuring normal drilling, with a damper pressure above 50 bar, logic-L closes the extractorreturn connection and the system is closed. The main reason is to minimize oil consumptionand heat.

In case of a sudden loss of damper pressure e g drilling into weak formations or cavity

impact pistonshankadapter

Extractor unit (Option)

When feeding backwards, the damper pressureis below the minimum limit to allow impact,set by the DPC-I system. To make it possibleto activate impact when using the extractor itis necessary to override the DPC-I system.This is done by push-button S451 , whichactivates solenoid valve Y176 , which by-passes logic valves I and J . Consequently,impact can be activated at any damperpressure.

The oil flow to the extractor unit is limited byflow regulator 9 to correspond to a pressure of

22 bar with unloaded shank adapter and logic-L not activated. The pressure can be read ongauge outlet 8 on the service panel.

Pump pressure when using the extractorIt should be noticed that only low hammer/pump pressure is available when using back

S451

L7



y p p p ghammer function. Logic valve C gets activated by reverse feed pilot pressure if high impact isactivated (see figure below left); and by pump pressure if low impact is activated (see figurebelow right), this prevents activation of logic-E . Without logic-E being activated, the pumppressure line going through logic-B will only lead oil to pressure relief valve 47e for pump 1pressure control.

TED-Extractor unit for COPROD (Option)

TED-Extractor unit for COPROD (Option)

The Rock drill can be equipped with a separate, air-powered extractor unit. The function ofthe extractor unit is to generate and transmit reverse percussion into the housing and therebyto the drill string and bit.The extractor unit, which is fitted in front of the rock drill, is powered by the flushing air.

L7 CR



Water mist system (Option)

Water mist system (Option)Water mist can only be activated with reduced flushing air.

Water-mist system 225 LitresThe 225 litre water-mist system is a pressurized system. The water is injected into the

flushing air after it has been pressurized by the compressed air.

The system consists of:1. Tank2. Safety valve3. Drain valve4. Blow down valve5. Isolation valve6. Filter7. Needle valve8. Solenoid valves9. Check valves



The system is controlled by switch S448 as follows:• OFF – None of the solenoid valves Y112A-B are activated.• AUTO – Solenoid valve Y112A is activated. The amount of water

injected is limited by the needle valve 7.• MANUAL – Both of solenoid valves Y112A-B are activated. The

amount of water injected is limited by the isolation valve 5.

The water-mist system is primarily used for hole stabilization and dustcontrol by adding water into the flush air. Generally a small amount ofwater is used in order to make the drill dust moist and bind into largerparticles, for dust control, or to bind to the hole wall, for holestabilization. In this case switch S448 should be in position AUTO (b).The amount of injected water should be adjusted by the needle valve tomatch the dust characteristics. Different settings may be necessary on

different sites and different applications

a

b

c

a

b c

d

Water mist system (Option)

Water-mist system 400 LitresThe 400 litre water-mist system is a non-pressurized system. Thewater is pumped into the flushing air circuit by a pneumaticpiston pump.

The system consists of:1. Tank2. Pneumatic piston pump3. Solenoid valves4. Drain valve5. Isolation valve6. Filter7. Needle valve

8. Check valves

The system is controlled by switch S448 as follows:• OFF – None of the solenoid valves Y112A-C are activated. • AUTO – Solenoid valve Y112A is activated. Y112A

activates the pump. The amount of air to power the pump islimited by the needle valve 7.

• Y112A-B



MANUAL – All of the solenoid valves areactivated. The amount of air to power the pump is limited bythe isolation valve 5.

• BLOW OFF – Double push on S448 forwards to blow out allthe water remaining in the system so the hose does notfreeze.

ECG, thread lubrication with oil (Option)

ECG, thread lubrication with oil (Option)

FunctionThe ECG pump Y107 starts pumping as soon as Flushing air is turned ON. The ECG pump isan electrical piston pump, controlled by the PLC output X11-16 which sends out pulses to the

pump. ECG injects a small amount of lubricating oil into the flushing air. The oil creeps alongthe walls of the flushing hole and out into the threaded joints. Atlas Copco recommends theuse of COP OIL for all ECG and ECL lubrication.

Conditions for the ECG function:

• Switch S130 in drilling position => D552-CH1/ON• Sensor B118 activated, RHS arm in carousel =>PLC input X10-5/ON• Compressor load switch S180 must be on => D552-CH9/ON• Impact switch S446A or S446B must be activated, to obtain air flushing => D550-


Adjusting• Ti l l h f h l i h

L7



• Time pulse – length of the pulse, i.e. thesignal time.

• Pulses/minute – how many pulses there isper minute

Thread lubrication with grease brushes (Option)


FunctionLubrication of the drill steel threads is done by two brushes (A) mounted on the lower RHScarousel bracket.The grease is supplied by a pump placed in the front of the wagon frame. The pump ispowered by compressed air from the rig compressor and controlled through solenoid valveY552 .Activation of Y552 can be done either automatically or manually and is controlled by theswitch S449 on the drilling control panel.

A

L7



Conditions for the automatic function:

• Switch S130 in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON• Brush greasing switch S449 in automatic mode, position (b) => D554-CH10/ON• RHS control lever S111 in arm to drill centre position => D551-CH3/ON

Result in:• PLC output X17-9/ON => Y552 activated for 2 seconds

When S449 is put in manual mode, no input from S111 is needed to cause the activation ofY552.


Operating• In normal operation, the system works in automatic mode. The grease pump is activated

when the rod handling lever S111 is in position to transfer a rod to drill centre. The resultis that each time a rod is removed from the carousel, a quantity of lubricant is pumped intothe brushes that the threads of the drill rod pass through.

•

If there is a need to additional grease, the system can be run manually. In this case thegrease pump is activated as long as switch S449 is kept in position (a).• If there is no need for thread greasing the system can be turned off by putting switch S449

in position (c).

a

b

c

ab c

d

L7



The maximum pressure to the pump is adjusted to 7 bars by the pressure regulator 21 which isdisplayed by the pressure gauge 22. The system can be switched off by blocking the airsupply with ball cock valve 8 or by the electrical switch in the cabin.

We recommend the use of “Atlas Copco Secoroc thread lubricant A” for the lubrication ofdrill steel threads.

Spray greasing system (Option)

Spray greasing system (Option)

FunctionLubrication of the drill steel threads is doneby an air spray and a grease injectormounted on the lower RHS carouselbracket.The grease is injected by a pump placed inthe front of the wagon frame. The greasepump is powered by compressed air fromthe rig compressor and controlled throughsolenoid valve Y552A . Compressed air isalso used for the spraying, and it’s

controlled by solenoid valve Y552B . Whenfunctioning, solenoid valve Y552B for airspray is set to start first before solenoidvalve Y552A for grease pump. The air thensprays grease onto the thread. Whenshutting off the function, Y552A is set to beturned off first before Y552B.Activation of Y552 is done manually and iscontrolled by the switch S449 on the

L8 , L7 CR



controlled by the switch S449 on thedrilling control panel.

Conditions for the function:

• Switch S130 in drilling position => D552-CH1/ON• Compressor load switch S180 must be on => D552-CH9/ON • Spray greasing switch S449 activated, position (a) => D554-CH9/ONResult in:o X11-10/ON => Y552B activated for 1 secondo X15-8/ON => Y552A activated after 400 ms, then activated for 200 ms

The maximum pressure to the pump is adjusted to 7 bars by the pressure regulator 21 which isdisplayed by the pressure gauge 22. The system can be switched off by blocking the airsupply with ball cock valve 8 or by the electrical switch in the cabin.

Laser sensor (Option)

Laser sensor (Option)Laser sensor B316 on the rock drill cradle sends in data signals via CPU3 which areprocessed by the display for showing the correct hole length/hole depth information as perpreview.

The laser sensor is most often used in undulating terrain to maintain as level a hole bottom aspossible for blasting.

10m

Hole bottom

4m

Drill bit position

Laser sensor position

Laser level



Hole bottom

Ex:A rotary laser is placed at the highest point in the area. From here, the depth to hole bottom ismeasured (in this case 10 m). When the rotary laser hits the sensor B316 on the rock drillcradle, the length between the sensor and drill bit (in this case 4 m) is automatically shown onthe display, irrespective of how many metres that has been drilled. This is done every time the

hole depth is reset. In this case, we know that there are 6 metres left to hole bottom (10-4=6m).

If it takes one meter for B316 to be hit by the rotary sensor in the above example, thefollowing describes the transaction which will take place on the display.

Q

I

JD

B

CA

Y101AY101B

L

Y176



1

low

Y101AY101B

Y112A

Water/air mixture

Watertank

Y116



2

M a

i n a

i r f l o w

Adjustment/calibration


Calibrating of positioning instruments

Calibration of laser sensorThe manually measured length value between thedrill bit and laser sensor when the drill bit isapplied to the ground. This value is entered in themenu for calibrating the laser sensor.

Calibration of aiming deviceThe aiming device is set in straight-forwardposition in the track’s extension. By selecting the

button for the aim device in the menusensor/calibration and pressing enter the functionis calibrated.

Calibration of length sensorRun the rock drill cradle to the feeder’s uppermechanical stop. Mark the button for cradleposition in the sensor/calibration menu and pressEnter to calibrate the function.



Calibration of angle sensor on feed beamPosition the feeder in the vertical position. Markthe button for feed swing and/or feed dump in thesensor/calibration menu and press Enter tocalibrate the function.

Calibration of boom joint sensorPosition the boom in the straight ahead position.Mark the button for boom swing angle in thesensor/calibration menu and press Enter tocalibrate the function.


Adjustable drilling parameters

RPCF

High impact pressure

High feed pressure

RPCF system(only in L7 )40

Rotation speed

Low impact pressure

Low feed pressure

Threading pressure

Unthreading pressure

ROC L7 , L7 CR with Bosal cabin



Not used

High feed pressure

Not used

Low feed pressure

Threading pressure

ROC L8 30 with Bosal cabin

2008-10-21 PLC Programme, ROC L7 40 (Bosal cabin)

PLC-PROGRAMME EXPLANATION

DRILLRIG TYPE : ROC L7 40 PLC TYPE : IFM CR0200/CR0020

PLC PART NUMBER : 3176 0001 50/3176 0001 55INDEX

INDEX .........................................................................................................................................................................................1 1. GENERAL FUNCTIONS ....................................................................................................................................................2

1.1 Power supply.....................................................................................................................................................................2 1.2 Engine cranking.................................................................................................................................................................2 1.3 Start Conditions for diesel engine....................................................................................................................................2 1.4 Pump 4 unload..................................................................................................................................................................2 1.5 Hydraulic oil pre-heating..................................................................................................................................................2 1.6 Indication for hydraulic jack (option)..............................................................................................................................2 1.7 Diesel filler pump stop ..................................................................................................................................................... 2

2. TRAMMING FUNCTIONS .................................................................................................................................................3 2.1 Tramming low speed.........................................................................................................................................................3 2.2 Tramming high speed........................................................................................................................................................3

3. DRILLING FUNCTIONS ....................................................................................................................................................3 3.1 Flushing, reduced..............................................................................................................................................................3 3.2 Flushing, full.....................................................................................................................................................................3 3.3 Dust Collector, suction control .......................................................................................................................................3 3.4 ECL-pump.........................................................................................................................................................................4 3.5a ECG-pump (option)........................................................................................................................................................4 3.5b Thread lubrication with grease brushes, automatic mode (option)..............................................................................4 3.6a Anti-jamming activated by high rotation pressure.........................................................................................................4 3.6b Anti-jamming activated by flushing...............................................................................................................................5



3.7 Feed lever, logic direction when anti-jamming is active ................................................................................................5 3.8a Low percussion with function self-holding...................................................................................................................5 3.9a High percussion with function self-holding..................................................................................................................6 3.8/3.9b Deactivation of magnetic holding for drill lever ....................................................................................................6 3.10 Impact hour counter........................................................................................................................................................6 3.11 Automatic drill stop function.........................................................................................................................................7 3.12 Impact stroke...................................................................................................................................................................7 3.13 Water mist system (option) ............................................................................................................................................7

4. RAPID FEED STOP FUNCTIONS ...................................................................................................................................8 4.1 Rapid feed stop, forward ..................................................................................................................................................8 4.2 Rapid feed stop, backwards, at break out position..........................................................................................................8 4.3 Rapid feed stop, backwards, at magazine level................................................................................................................8 4.4 Rapid feed stop, backwards, max .....................................................................................................................................8

5. ROD HANDLING FUNCTIONS ........................................................................................................................................9 5.1 Open Gripper.....................................................................................................................................................................9 5.2 Guide grip..........................................................................................................................................................................9 5.3 Hard grip............................................................................................................................................................................9 5 4 RHS t d d ill t 9

2008-10-21 PLC Programme, ROC L7 40 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay

1. GENERAL FUNCTIONS1.1 Power supply

S139/Ignition ON K11Fuse F13-F23/ON + 24V +24VX1/100 - ground connection

• When ignition key S139 is in position I, ignition ON, relay K11 is activated to allow power supply tofuse F13, F15-F22. Fuse F14 and F23 are powered directly aside from the K11 relay.

1.2 Engine crankingS130/Tramming pos. D552-CH2/3/ON X11-13/ON Y121A

X17-1/ON Y121BS180/Compressor load D552-CH9/OFF X18-8/OFF Y210 OFFE-stops S132A, S132Bnot activated X10-8/ONS139/Engine start D550-CH3/ON X11-4/ON K5A

1.3 Start Conditions for diesel engineB366/Compressor temp. X16-7 (< ~17.5mA)B362/Hydraulic oil temp. X16-5 (< ~15mA)B143/Hydraulic oil level X11-8/ON X11-3/ON K200

1.4 Pump 4 unloadS130/Tramming pos. D552-CH2/3/ON X11-13/ON Y121AS139/Engine start D550-CH3/ON X17-1/OFF Y121B OFF



S139/Ignition D550-CH4/ON X17-1/ON Y121B

• When the ignition switch S139 is release from starting position and re-springed back to the ignitionposition, the output X17-1 will be ON until the diesel motor has reached a revolution of 1000 rpm.

1.5 Hydraulic oil pre-heating

S130/Pre-heating position D552-CH4/ON X11-13/ON Y121AX17-1/ON Y121BX11-12/ON Y120A

Y120BY120C

1.6 Indication for hydraulic jack (option)B184/Dis-ACTIVE X11-1/OFF Indication in display


2. TRAMMING FUNCTIONS2.1 Tramming low speed

S130/Tramming pos. low D552-CH2/ON X11-13/ON Y121AX17-1/ON Y121BX11-1/ON Y169

S121/Chair in position D550-CH2/ONB184/Active (option) X11-1/ONS174/S175/Activated D553/CH13 or 14/ON X10-9/10/ON Y206

X10-11/12/ON Y207

2.2 Tramming high speedS130/Tramming pos. high D552-CH3/ON X11-13/ON Y121A

X17-1/ON Y121BX11-1/ON Y169X11-14/ON Y122


X10-11/12/ON Y207

3. DRILLING FUNCTIONS3.1 Flushing, reduced

S130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ON

l d ( b d d )



S180/Compressor load (not PLC based condition)S100/Flush air pos. reduced D551-CH1/OFFS446A/Flushing pos. D550-CH9/ON X17-14/ON Y116

• To start flushing, press the impact switch S446A for shorter than 0.5 sec. To start low impact, pressswitch S446A for longer than 0.5 sec.

3.2 Flushing, fullS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S100/Flush air pos. full D551-CH1/ONS446A/Flushing pos. D550-CH9/ON X17-14/ON Y116

X17-13/ON Y115


3.4 ECL-pumpS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S446/Low or High Imp. D550-CH9/10/ON X17-9/ON Y106

• The ECL-pump Y106 works for an extended time after impact switch S446 have been shut-off afterdrilling, the time delay can be adjusted via the HEC3 display.

• To start low impact, press the impact switch S446A for longer than 0.5 sec.

3.5a ECG-pump (option)S130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S446/Flushing pos. D550-CH9/10/ON X11-16/ON Y107

• To start flushing and DCT, press the impact switch S446A for shorter than 0.5 sec. To start low/highimpact, press the impact switch S446A for longer than 0.5 sec.

3.5b Thread lubrication with grease brushes, automatic mode (option)S130/Drilling pos. D552-CH1/ONS180/Compressor load (not PLC based condition)S449/Automatic pos. D554-CH10/ONS111/Arm to drill centre D551-CH3/ON X15-8/ON Y552



3.6a Anti-jamming activated by high rotation pressureS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS446/Low or High Imp. D550-CH9/10/ONB262/Not activated X16-16/OFFB134/ACTIVE X11-6/ON X11-11/ON Y109

X11-9/OFF Y101A OFFB134/De-activated X11-6/OFF X11-11/OFF Y109 OFF

X11-9/ON Y101AX13-12/ON Y101BX11-15/OFF Y101C OFF

……4 sec….. X13-12/OFF Y101B OFFX11-15/ON Y101C

• Input X11-6 must be ON for a minimum of 0.8 sec in order to result in output Y11-11.


3.6b Anti-jamming activated by flushingS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S100/Full flush air pos. D551-CH1/ONS446/Flush air/impact pos. D550-CH9/10/ONB262/Not activated X16-16/OFFB142/Active X11-7/ON X11-11/ON Y109


X11-9/ON Y101AX13-12/ON Y101BX11-15/OFF Y101C OFF

……4 sec….. X13-12/OFF Y101B OFFX11-15/ON Y101C

• The flow switch is only functioning during full flushing. The minimum activating time is set by PLCinternally to 0.8 sec.

• Y11-11 will remain active for a minimum of 2 sec or until the pressure drop/air flow is back tonormal.

• When anti-jamming has been de-activated low feed and low impact pressure will be activated for 4sec. before going to high feed and high impact pressure.

• When feed backwards is automatically activated during anti-jamming output X11-9 will be OFF. Thisdeactivates Y101A, which means full pump pressure is available for feeding backwards.

3 7 Feed lever logic direction when anti jamming is active



3.7 Feed lever, logic direction when anti-jamming is activeS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB134/ACTIVE X11-6/ON X11-11/ON Y109B262/ACTIVE X16-16/ON X11-11/OFF Y169 OFF

• Pulling the drill lever to feed backwards position activates B262. This will block the anti jammingoutput X11-11 to allow logic function of the drill lever.

3.8a Low percussion with function self-holdingMagnetic holding on rotation anti-clockwise and feeding forwards can only be achieved when the controllever is being pulled to the end position, pulling the lever only half way and then release would result in leverspringed back to the neutral position.

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)

S452/R id f d d ff D550 CH11/OFF D550 CH7/ON Y179A


3.9a High percussion with function self-holdingS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S452/Rapid feed mode off D550-CH11/OFF D550-CH7/ON Y179A

D550-CH8/ON Y179BD550-CH15/ON H452

S446A/Low impact D550-CH9/ON X11-9/ON Y101A

X13-12/ON Y101BX17-13/ON Y115*X17-14/ON Y116

D550-CH16/ON H446⇓ ⇓ ⇓ ⇓

S446B/High impact D550-CH10/ON X13-12/OFF Y101B OFFX11-15/ON Y101CX17-13/ON Y115*

X17-14/ON Y116D550-CH16/ON H446

• To shift to high impact from low impact, press S446B for longer than 0.5 sec, pressing the button oncemore or shorter than 0.5 sec would deactivate impact/flushing and the lever returns to the neutralposition.

• When changing back to low impact, press the low impact pressure switch S446A for longer than 0.5sec, otherwise the impact will be shut off.

• When switch S446B is activated, valve Y101C for high feed pressure is activated, valve Y101B forlow impact pressure is deactivated.



p p• Diode H446 gives stable signal when drilling with high impact.• When performing percussion release or starting directly on high impact, impact is activated as long as

switch S446B is pressed.• Valve Y115 is only activated when full flushing air is chosen by switch S100.

3.8/3.9b Deactivation of magnetic holding for drill leverS453/Magnets off drill lever D550-CH12/ONORS452/Rapid feed mode D550-CH11/ON D550-CH7/OFF

D550-CH8/OFF

3.10 Impact hour counterS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact pos. D550-CH9/10/ON parameter in software


3.11 Automatic drill stop functionparameter in software/Active X11-9/OFF Y101A OFF

X17-13/OFF Y115 OFFX17-14/OFF Y116 OFFD550-CH7/OFFD550-CH8/OFFD550-CH15/OFF X12-2/ON Y178

• Engine rpm will be lowered to 1500 rpm.• The drill lever is automatically shifted to rapid feed/threading mode when the desired drill

depth/length is reached.

3.12 Impact strokeS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFF

Short stroke S400/Upper pos D553-CH7/ON X17-15/OFF Y175 OFFShort stroke S400/Lower pos D553-CH7/OFF

S446A/Low impact D550-CH9/ON X17-15/OFF Y175 OFFLong stroke S400/Lower pos D553-CH7/OFF

S446B/High impact D553-CH10/ON X17-15/ON Y175

3.13 Water mist system (option)S130/Drilling pos. D552-CH1/ONS180/Compressor load (not PLC based condition)S446A/Reduced flush air D550-CH9/ON

Automatic S448/Middle pos D554-CH4/ON X17-11/ON Y112AX17-10/ON Y112C*



Manual S448/Upper pos D554-CH3/ON X17-11/ON Y112AX17-12/ON Y112BX17-10/ON Y112C*

• Valve Y112C is activated if the 400 litre water-mist system is used.


4. RAPID FEED STOP FUNCTIONS4.1 Rapid feed stop, forward

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Rapid feed mode D550-CH11/ON X12-2/ON K178

D550-CH7/OFFD550-CH8/OFFD550-CH15/OFF

software stop X17-2/ON Y150

4.2 Rapid feed stop, backwards, at break out positionS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Rapid feed mode D550-CH11/ON X12-2/ON K178


S113/Take up rod string D551-CH9/ONsoftware stop X16-10/ON *Y149

*Y149 only activated for 2 seconds.

4.3 Rapid feed stop, backwards, at magazine levelS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Rapid feed mode D550-CH11/ON X12-2/ON K178


S113/Take up rod string D551-CH9/ON



software stop X16-10/ON *Y149*Y149 only activated for 2 seconds.

4.4 Rapid feed stop, backwards, maxS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Rapid feed mode D550-CH11/ON X12-2/ON K178



• The stop signals come from HEC-3 program,and all the stop distances can be set in thedisplay. The signal is then sent to the PLC for 4.1


5. ROD HANDLING FUNCTIONS5.1 Open Gripper

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONS111/Top button pushed D550-CH6/ON X12-3/ON Y300

5.2 Guide gripS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONS111/RHS lever in neutral D551-CH2/3/4/5/6/OFF

..….0.5 sec…. X12-8/ON Y306• The activation of Y306 is delayed 0.5 sec by the PLC.

5.3 Hard gripS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFF

• Hard grip is the normal condition. No active inputs or outputs are required.

5.4 RHS, arm towards drill-centre

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ON



B118/RHS-arm in carousel X10-5/ONS111/Arm to drill centre D551-CH3/ON

Arm movement starts X12-5/ON Y301B⇓

Arm in drill centre B120/ACTIVE X10-3/ONArm in carousel stops mechanically X12-5/ON Y301B

⇓ Sequence complete

• The output X12-5 remains activated until the sequence is completed although the function is stoppedmechanically.

5.5 RHS, arm towards carouselS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFF


5.6 RHS, carousel rotation, clockwiseS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB118/RHS-arm in carousel X10-5/ONS111/Push the top button D551-CH6/ONS111/Pos, to the left. D551-CH4/ON

Rotation starts B183/ACTIVE X13-1/ON X15-2/ON Y303A

⇓ B183/Dis-ACTIVE X13-1/OFFRotation stops B183/ACTIVE X13-1/ON X15-2/OFF Y303A OFF


5.7 RHS, carousel rotation, anti-clockwiseS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFF

B379/Operator seat active D550-CH1/ONB118/RHS-arm in carousel X10-5/ONS111/Push the top button D551-CH6/ONS111/Pos, to the right. D551-CH5/ON

Rotation starts B182/ACTIVE X14-8/ON X15-1/ON Y303B⇓ B182/Dis-ACTIVE X14-8/OFF

Rotation stops B182/ACTIVE X14-8/ON X15-1/OFF Y303B OFF




5.8 Sleeve retainer activationS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONS182/Sleeve retainer D551-CH13/ON X15-3/ON Y309

• Sleeve retainer activation is time delayed in PLC, to secure that the rod grippers are in drill centrebefore activation.

5.9 Sleeve retainer de-activationS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS182/Sleeve retainer D551-CH13/OFF X15-3/OFF Y309 OFF


6. MONITORING FUNCTIONS 6.1 Low hydraulic oil level, engine shut down

B143/Open contact X11-8/OFF X11-3/OFF K200 OFF

6.2 High hydraulic oil temperatureB362/sensor reached 90°C X16-5 X11-3/OFF K200 OFF

6.3 High compressor temperatureB366/sensor reached 120°C X16-7 X11-3/OFF K200 OFF

• For all the functions mentioned above, loss of X11-3 deactivates the start engine relay K200. WhenK200 is not activated, it is connected to the ground, thus shutting down the engine.



2008-10-21 PLC Programme, ROC L7 40CR (Bosal cabin)

PLC-PROGRAMME EXPLANATIONDRILLRIG TYPE : ROC L7 40CRPLC TYPE : IFM CR0200/CR0020

PLC PART NUMBER : 3176 0001 50/3176 0001 55INDEX

INDEX .........................................................................................................................................................................................1 1. GENERAL FUNCTIONS ....................................................................................................................................................2

1.1 Power supply.....................................................................................................................................................................2 1.2 Engine cranking.................................................................................................................................................................2 1.3 Start Conditions for diesel engine....................................................................................................................................2 1.4 Pump 4 unload..................................................................................................................................................................2 1.5 Hydraulic oil pre-heating..................................................................................................................................................2 1.6 Indication for hydraulic jack (option)..............................................................................................................................2 1.7 Diesel filler pump stop ..................................................................................................................................................... 2


3. DRILLING FUNCTIONS ....................................................................................................................................................3 3.1 Flushing, reduced..............................................................................................................................................................3 3.2 Flushing, full.....................................................................................................................................................................3 3.3 Dust Collector, suction control .......................................................................................................................................4 3.4 ECL-pump.........................................................................................................................................................................4 3.5 HECL-pump......................................................................................................................................................................4 3.6 Spray greasing activation (option) ...................................................................................................................................5 3.7a Anti-jamming activated by high rotation pressure.........................................................................................................5 3.7b Anti-jamming activated by flushing...............................................................................................................................5 3.8 Feed lever, logic direction when anti-jamming is active ................................................................................................6 3.9a Low percussion with function self-holding...................................................................................................................6



3.9a Low percussion with function self holding...................................................................................................................6 3.10a High percussion with function self-holding................................................................................................................7 3.9/3.10b Deactivation of magnetic holding for drill lever..................................................................................................7 3.11 Impact hour counter........................................................................................................................................................7 3.12 Automatic drill stop function.........................................................................................................................................8 3.13 Impact stroke...................................................................................................................................................................8 3.14 Water mist system (option) ............................................................................................................................................8

4. RAPID FEED/FEED STOP F UNCTIONS ......................................................................................................................9 4.1 Feed stop/Impact stop, forward........................................................................................................................................9 4.2 Rapid feed stop, forward ..................................................................................................................................................9 4.3 Rapid feed stop, backwards, at break out position..........................................................................................................9 4.4 Rapid feed stop, backwards, at magazine level................................................................................................................9 4.5 Rapid feed stop, backwards, max .....................................................................................................................................9

5. ROD HANDLING FUNCTIONS ......................................................................................................................................10 5.1 Open Gripper...................................................................................................................................................................10 5.2 Guide grip........................................................................................................................................................................10



2008-10-21 PLC Programme, ROC L7 40CR (Bosal cabin)Function Signal from/position Input/status Output Valve/relay




X10-11/12/ON Y207


X17-1/ON Y121BX11-1/ON Y169X11-14/ON Y122

S121/Chair in position D550-CH2/ON

B184/Active (option) X11-1/ONS174/S175/Activated D553/CH13 or 14/ON X10-9/10/ON Y206

X10-11/12/ON Y207

3. DRILLING FUNCTIONS3.1 Flushing, reduced

S130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)



p ( )S100/Flush air pos. reduced D551-CH1/OFFS446A/Flushing pos. D550-CH9/ON X17-14/ON Y116

• To start flushing, press the impact switch S446A for shorter than 0.5 sec. To start low impact, pressswitch S446A for longer than 0.5 sec.

3.2 Flushing, fullS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S100/Flush air pos. full D551-CH1/ONS446A/Flushing pos. D550-CH9/ON X17-14/ON Y116

X17-13/ON Y115


3.3 Dust Collector, suction controlS130/Drilling pos. D552-CH1/ON X18-2/ON Y250B118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S181/Suction pos. D551-CH12/ONS446/Flushing pos. D550-CH9/10/ON X18-7/ON Y253

• To start flushing and DCT, press the impact switch S446A for shorter than 0.5 sec. To start low

impact, press the impact switch S446A for longer than 0.5 sec.• When Impact is shut OFF there is a 4 seconds delay before X18-7 goes OFF and suction stops.

3.4 ECL-pumpS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S446/Low or High Imp. D550-CH9/10/ON X17-9/ON Y106

• The ECL-pump Y106 works for an extended time after impact switch S446 have been shut-off afterdrilling, the time delay can be adjusted via the HEC3 display.

• To start low impact, press the impact switch S446A for longer than 0.5 sec.

3.5 HECL-pumpS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S446/Flushing pos. D550-CH9/10/ON X11-16/ON Y165



• The HECL-pump Y165 works for an extended time after impact switch S446 have been shut-offafter drilling, the time delay can be adjusted via the HEC3 display.


3.6 Spray greasing activation (option)S130/Drilling pos. D552-CH1/ONS180/Compressor load (not PLC based condition)S449/Manual pos. D554-CH10/ON X15-8/ON Y552A

X16-11/ON Y552B

3.7a Anti-jamming activated by high rotation pressureS130/Drilling pos. D552-CH1/ON

B118/RHS-arm in carousel X10-5/ONS446/Low or High Imp. D550-CH9/10/ONB262/Not activated X16-16/OFFB134/ACTIVE X11-6/ON X11-11/ON Y109


X11-9/ON Y101AX13-12/ON Y101B

X11-15/OFF Y101C OFF……4 sec….. X13-12/OFF Y101B OFFX11-15/ON Y101C

• Input X11-6 must be ON for a minimum of 0.8 sec in order to result in output Y11-11.• Y11-11 will remain active for a minimum of 2 sec or until the rotation pressure drops below the

setting of sensor B134.• When anti-jamming has been de-activated low feed and low impact pressure will be activated for 4

sec. before going to high feed and high impact pressure.• When feed backwards is automatically activated during anti-jamming output X11-9 will be OFF.

This deactivates Y101A, which means full pump pressure is available for feeding backwards.



3.7b Anti-jamming activated by flushingS130/Drilling pos. D552-CH1/ONB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S100/Full flush air pos. D551-CH1/ONS446/Flush air/impact pos. D550-CH9/10/ONB262/Not activated X16-16/OFFB142/Active X11-7/ON X11-11/ON Y109


X11-9/ON Y101AX13-12/ON Y101B


3.8 Feed lever, logic direction when anti-jamming is activeS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB134/ACTIVE X11-6/ON X11-11/ON Y109B262/ACTIVE X16-16/ON X11-11/OFF Y109 OFF

• Pulling the drill lever to feed backwards position activates B262. This will block the anti jammingoutput X11-11 to allow logic function of the drill lever.

3.9a Low percussion with function self-holdingMagnetic holding on rotation clockwise and feeding forwards can only be achieved when the control leveris being pulled to the end position, pulling the lever only half way and then release would result in leverspringed back to the neutral position.

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S452/Rapid feed mode off D550-CH11/OFF D550-CH7/ON Y179A

D550-CH8/ON Y179BD550-CH15/ON H452

S446A/Low impact D550-CH9/ON X11-9/ON Y101AX13-12/ON Y101BX17-13/ON Y115*X17-14/ON Y116

D550-CH16/ON H446

•

To activate impact, press S446A for longer than 0.5 sec, pressing the button once more for shorterthan 0.5 sec would deactivate impact/flushing and the lever returns to the neutral position.

• Diode H446 gives blinking signals when drilling with low impact.



• Valve Y115 is only activated when full flushing air is chosen by switch S100.


3.10a High percussion with function self-holdingS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S452/Rapid feed mode off D550-CH11/OFF D550-CH7/ON Y179A

D550-CH8/ON Y179BD550-CH15/ON H452

S446A/Low impact D550-CH9/ON X11-9/ON Y101A

X13-12/ON Y101BX17-13/ON Y115*X17-14/ON Y116

D550-CH16/ON H446⇓ ⇓ ⇓ ⇓

S446B/High impact D550-CH10/ON X13-12/OFF Y101B OFFX11-15/ON Y101CX17-13/ON Y115*

X17-14/ON Y116D550-CH16/ON H446

• To shift to high impact from low impact, press S446B for longer than 0.5 sec, pressing the buttononce more or shorter than 0.5 sec would deactivate impact/flushing and the lever returns to theneutral position.

• When changing back to low impact, press the low impact pressure switch S446A for longer than 0.5sec, otherwise the impact will be shut off.

•

When switch S446B is activated, valve Y101C for high feed pressure is activated, valve Y101B forlow impact pressure is deactivated.• Diode H446 gives stable signal when drilling with high impact.

h d l h h h d l h d



• When starting directly with high impact, impact is activated as long as switch S446B is pressed.• Valve Y115 is only activated when full flushing air is chosen by switch S100.

3.9/3.10b Deactivation of magnetic holding for drill leverS453/Magnets off drill lever D550-CH12/ONORS452/Rapid feed mode D550-CH11/ON D550-CH7/OFF

D550-CH8/OFF



3.12 Automatic drill stop functionparameter in software/Active X11-9/OFF Y101A OFFX17-13/OFF Y115 OFFX17-14/OFF Y116 OFFD550-CH7/OFFD550-CH8/OFFD550-CH15/OFF X12-2/ON Y178

• Engine rpm will be lowered to 1500 rpm.

• The drill lever is automatically shifted to rapid feed/threading mode when the desired drilldepth/length is reached.

3.13 Impact strokeS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFF

Short stroke S400/Upper pos D553-CH7/ON X17-15/OFF Y175 OFFShort stroke S400/Lower pos D553-CH7/OFF

S446A/Low impact D550-CH9/ON X17-15/OFF Y175 OFFLong stroke S400/Lower pos D553-CH7/OFF

S446B/High impact D553-CH10/ON X17-15/ON Y175

3.14 Water mist system (option)S130/Drilling pos. D552-CH1/ONS180/Compressor load (not PLC based condition)S446A/Reduced flush air D550-CH9/ON

Automatic S448/Middle pos D554-CH4/ON X17-11/ON Y112AX17-10/ON Y112C*

Manual S448/Upper pos D554-CH3/ON X17-11/ON Y112AX17 12/ON Y112B



X17-12/ON Y112BX17-10/ON Y112C*



4. RAPID FEED/FEED STOP FUNCTIONS4.1 Feed stop/Impact stop, forward

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Feed mode D550-CH11/OFF X12-2/ON K178

D550-CH7/OND550-CH8/OND550-CH15/ON


4.2 Rapid feed stop, forwardS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Rapid feed mode D550-CH11/ON X12-2/ON K178







4 4 R id f d b k d i l l




D550-CH7/OFFD550-CH8/OFF

D550-CH15/OFFS113/Take up rod string D551-CH9/ON



D550-CH7/OFF


5. ROD HANDLING FUNCTIONS5.1 Open Gripper


5.2 Guide grip

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONS111/RHS lever in neutral D551-CH2/3/4/5/6/OFF


5.3 Hard gripS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFF

• Hard grip is the normal condition. No active inputs or outputs are required. Exceptions are opengripper and Guide grip.

5.4 RHS, arm towards drill-centre with closed grippers (Tube in grippers)

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB118/RHS i l X10 5/ON



B118/RHS-arm in carousel X10-5/ONS111/Arm to drill centre D551-CH3/ON

Outlet hatch opens X15-4/ON Y310Arm movement starts X12-5/ON Y301B

⇓ Halfway sensor B119/ACTIVE X10-2/ONArm movement stops X12-5/OFF

Y301B OFFGripper rotation starts towards drill centre X16-12/ON Y311B

⇓ Timer delay 3 sec after B119 is activated…Gripper rotation stops mechanically X16-12/ON Y311BArm movement continues X12-5/ON Y301B


5.5 RHS, arm towards drill-centre with open grippers S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB118/RHS-arm in carousel X10-5/ONS111/Arm to drill centre D551-CH3/ONS111/Push the top button D551-CH6/ON

Outlet hatch is closed X15-4/OFF Y310 OFF

Rod grippers open X12-3/ON Y300Arm movement starts X12-5/ON Y301B⇓

Half way sensor B119/ACTIVE X10-2/ONArm movement stops X12-5/OFF Y301B OFFGripper rot. starts towards drill centre X16-12/ON Y311B

⇓ Timer delay 3 sec after B119 is activated…

Gripper rot. stops mechanically X16-12/ON Y311BArm movement continues X12-5/ON Y301B⇓

Arm in drill centre B120/ACTIVE X10-3/ONArm movement stops mechanically X12-5/ON Y301BGripper rot. stopped mechanically X16-12/ON Y311B


• The output X12-5 and X16-12 remain activated until the sequence is completed although thefunction is stopped mechanically.




5.6 RHS, arm towards carousel with closed gripper (Tube in grippers) S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB178/Dis-ACTIVE X16-1/OFFB120/RHS-arm in drill centre X10-3/ONS111/Arm to carousel pos. D551-CH2/ON

Outlet hatch opens X15-4/ON Y310Arm movement starts X12-4/ON Y301A

⇓ Halfway sensor B119/ACTIVE X10-2/ONArm movement stops X12-4/OFF Y301A OFFGripper rot. towards carousel starts X18-1/ON Y311A

⇓ Timer delay 3 sec after B119 is activated…Gripper rot. stops mechanically X18-1/ON Y311A

Arm movement continues X12-4/ON Y301A⇓ Magazine sensor B118/ACTIVE X10-5/ONArm movement stops mechanically X12-4/ON Y301AGripper rot. stopped mechanically X18-1/ON Y311AOutlet hatch is closed. X15-4/OFF Y310 OFF


• The output X12-4 and X18-1 remain activated until the sequence is completed although the functionis stopped mechanically.

• Outlet hatch will remain opened until last condition is fulfilled (B118 activated).




5.7 RHS, arm towards carousel with open gripper S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONS111/Push the top button. D551-CH6/ONS111/Arm to carousel pos. D551-CH2/ON

Outlet hatch is closed X15-4/OFF Y310 OFFOpen grippers X12-3/ON Y300Arm movement starts X12-4/ON Y301A

⇓ Halfway sensor. B119/ACTIVE X10-2/ONArm movement stops X12-4/OFF Y301A OFFGripper rot. towards carousel starts X18-1/ON Y311A

⇓ Timer delay 3 sec after B119 is activated…Gripper rot. stops mechanically X18-1/ON Y311AArm movement continues X12-4/ON Y301A

⇓ Arm in carousel B118/ACTIVE X10-5/ONArm in carousel stops mechanically X12-4/ON Y301AGripper rot. stopped mechanically X18-1/ON Y311A






5.8 RHS, carousel rotation, clockwiseS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONORB119/RHS-arm in mid pos. X10-2/ONS111/Pos, to the left. D551-CH4/ON

Rotation starts B183/ACTIVE X13-1/ON X15-2/ON Y303A⇓ B183/Dis-ACTIVE X13-1/OFF

Rotation stops B183/ACTIVE X13-1/ON X15-2/OFF Y303A OFF⇓

Sequence complete

• To index additional steps, S111 can be kept in position.

5.9 RHS, carousel rotation, anti-clockwiseS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONORB119/RHS-arm in mid pos. X10-2/ONS111/Pos, to the right. D551-CH5/ON

Rotation starts B182/ACTIVE X14-8/ON X15-1/ON Y303B⇓ B182/Dis-ACTIVE X14-8/OFFRotation stops B182/ACTIVE X14-8/ON X15-1/OFF Y303B OFF

⇓



Sequence complete


6. MONITORING FUNCTIONS 6.1 Low hydraulic oil level, engine shut down


6.2 High hydraulic oil temperatureB362/sensor reached 90°C X16-5 X11-3/OFF K200 OFF

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)

PLC-PROGRAMME EXPLANATION

DRILLRIG TYPE : ROC L8 30 and ROC L6 30 PLC TYPE : IFM CR0200/CR0020

PLC PART NUMBER : 3176 0001 50/3176 0001 55

INDEXINDEX .........................................................................................................................................................................................1 1. GENERAL FUNCTIONS ....................................................................................................................................................2

1.1 Power supply.....................................................................................................................................................................2 1.2 Engine cranking.................................................................................................................................................................2 1.3 Start Conditions for diesel engine....................................................................................................................................2 1.4a Pump 4 unload ................................................................................................................................................................2 1.4b Compressor blow off valve............................................................................................................................................2 1.5 Hydraulic oil pre-heating..................................................................................................................................................2 1.6 Indication light for hydraulic jack (option) .....................................................................................................................2 1.7 Diesel filler pump stop ..................................................................................................................................................... 3


3. DRILLING FUNCTIONS ....................................................................................................................................................3 3.1 Dust Collector, suction control .......................................................................................................................................3 3.2 HECL-pump......................................................................................................................................................................3 3.3 Spray greasing activation (option) ...................................................................................................................................4 3.4 Anti-jamming activated by high rotation pressure ..........................................................................................................4 3.5 Feed lever, logic direction when anti-jamming is active ................................................................................................5 3.6a Low percussion with function self-holding...................................................................................................................5 3.7a High percussion with function self-holding..................................................................................................................5



3.6/3.7b Deactivation of magnetic holding for drill lever ....................................................................................................6 3.8 Impact hour counter..........................................................................................................................................................6 3.9 Automatic drill stop function...........................................................................................................................................6 3.10 Water mist system (option) ............................................................................................................................................6

4. RAPID FEED STOP FUNCTIONS ...................................................................................................................................7 4.1 Rapid feed stop, forward ..................................................................................................................................................7 4.2 Rapid feed stop, backwards, at break out position..........................................................................................................7 4.3 Rapid feed stop, backwards, at magazine level................................................................................................................7 4.4 Rapid feed stop, backwards, max .....................................................................................................................................7

5. ROD HANDLING FUNCTIONS ........................................................................................................................................8 5.1 Open Gripper.....................................................................................................................................................................8 5.2 Guide grip..........................................................................................................................................................................8 5.3 Hard grip............................................................................................................................................................................8 5.4 RHS, arm towards drill-centre with closed grippers (Tube in grippers) ........................................................................8

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay

1. GENERAL FUNCTIONS1.1 Power supplyS139/Ignition ON K11Fuse F13-F23/ON + 24V +24VX1/100 - ground connection

• When ignition key S139 is in position I, ignition ON, relay K11 is activated to allow power supply tofuse F13, F15-F22. Fuse F14 and F23 are powered directly aside from the K11 relay.

1.2 Engine crankingS130/Tramming pos. D552-CH2/ON X11-13/ON Y121A

X17-1/ON Y121BS180/Compressor load D552-CH9/OFF X18-8/OFF Y210A OFFE-stops S132A, S132Bnot activated X10-8/ONS139/Engine start D550-CH3/ON

B336/Pressure preventing X13-4/OFF X11-4/ON K5A

1.3 Start Conditions for diesel engineB366A,B/Compressor temp. X16-6,7 (< ~17.5mA)B362/Hydraulic oil temp. X16-5 (< ~15mA)B143/Hydraulic oil level X11-8/ON X11-3/ON K200

1.4a Pump 4 unload

S130/Tramming pos. D552-CH2/ON X11-13/ON Y121AS139/Engine start D550-CH3/ON X17-1/OFF Y121B OFFS139/Ignition D550-CH4/ON X17-1/ON Y121B



• When the ignition switch S139 is release from starting position and re-springed back to the ignitionposition, the output X17-1 will be ON until the diesel motor has reached a revolution of 1000 rpm.

1.4b Compressor blow off valveS130/Tramming pos. D552-CH2/ON X11-13/ON Y121A S139/Engine start D550-CH3/ON X17-1/OFF Y121B OFFS139/Ignition D550-CH4/ON X17-1/ON Y121B

X17-16/ON Y186

• When the ignition switch S139 is released from starting position and re-springed back to ignitionposition, the output X17-16 will be ON until the diesel motor has reached a revolution of 1000 rpm.

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay1.7 Diesel filler pump stop

B352/Diesel level X13-6/appox. 23.5V X11-2/OFF K18 OFF

• Filler pump relay K18 connected to PLC output X11-2 is activated when the analogue signal read fromPLC input X13-6 is less than appox. 23.5V.



S121/Chair in position D550-CH2/ONB184/Active X11-1/ONS174/S175/Activated D553/CH13 or 14/ON X10-9/10/ON Y206

X10-11/12/ON Y207


X17-1/ON Y121BX11-1/ON Y169X11-14/ON Y122


X10-11/12/ON Y207



3. DRILLING FUNCTIONS3.1 Dust Collector, suction control

S130/Drilling pos. D552-CH1/ON X18-2/ON Y250B118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S181/Suction pos. D551-CH12/ONS446/Low or High Imp. D550-CH9/10/ON X18-7/ON Y253

• When Impact is shut OFF there is a 4 seconds delay before X18-7 goes OFF and suction stops.

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay3.3 Spray greasing activation (option)

S130/Drilling pos. D552-CH1/ONS180/Compressor load (not PLC based condition)S449/Manual pos. D554-CH10/ON X15-8/ON Y552A

X16-11/ON Y552B

3.4 Anti-jamming activated by high rotation pressureS130/Drilling pos. D552-CH1/ON

B118/RHS-arm in carousel X10-5/ONS446/Low or High Imp. D550-CH9/10/ONB262/Not activated X16-16/OFFB134/ACTIVE X11-6/ON X11-11/ON Y109B134/De-activated X11-6/OFF X11-11/OFF Y109 O FF

X11-15/OFF Y101C OFFX12-1/OFF Y210B OFF

……4 sec….. X11-15/ON Y101CX12-1/ON Y210B

• Input X11-6 must be ON for a minimum of 0.8 sec in order to result in output Y11-11.• Y11-11 will remain active for a minimum of 2 sec or until the rotation pressure drops below the

setting of sensor B134.• When anti-jamming has been de-activated low feed pressure and low air pressure will be activated

for 4 sec. before going to high feed pressure and full air pressure.• When feed backwards is automatically activated during anti-jamming, impact will be OFF

mechanically. Since the drill bit extends out when feeding backwards and the impact piston won’tget any contact with the drill bit, so no impact is carried out when feeding backwards.



2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay3.5 Feed lever, logic direction when anti-jamming is active

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB134/ACTIVE X11-6/ON X11-11/ON Y109B262/ACTIVE X16-16/ON X11-11/OFF Y109 OFF

• Pulling the drill lever to feed backwards position activates B262. This will block the anti-jammingoutput X11-11 to allow logic function of the drill lever.

3.6a Low percussion with function self-holdingMagnetic holding on rotation clockwise and feeding forwards can only be achieved when the control leveris being pulled to the end position, pulling the lever only half way and then release would result in leverspringed back to the neutral position.

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)S452/Rapid feed mode off D550-CH11/OFF D550-CH7/ON Y179A

D550-CH8/ON Y179BD550-CH15/ON H452

S446A/Low impact D550-CH9/ON X17-14/ON Y116D550-CH16/ON H446

• To activate impact/flushing, press S446A for longer than 0.5 sec, pressing the button once more forshorter than 0.5 sec would deactivate impact/flushing and the lever returns to the neutral position.

• Diode H446 gives blinking signals when drilling with low impact.

3.7a High percussion with function self-holdingS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFB118/RHS-arm in carousel X10-5/ONS180/Compressor load (not PLC based condition)



S452/Rapid feed mode off D550-CH11/OFF D550-CH7/ON Y179AD550-CH8/ON Y179B

D550-CH15/ON H452S446A/Low impact D550-CH9/ON X17-14/ON Y116

D550-CH16/ON H446⇓ ⇓ ⇓ ⇓

S446B/High impact D550-CH10/ON X11-15/ON Y101CX12-1/ON Y210BX17-13/ON Y115X17-14/ON Y116

D550-CH16/ON H446

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay3.6/3.7b Deactivation of magnetic holding for drill lever

S453/Magnets off drill lever D550-CH12/ONORS452/Rapid feed mode D550-CH11/ON D550-CH7/OFF

D550-CH8/OFF


• As long as either of the impact switches S446A and S446B is activated, the PLC sends signals to theHEC-3 program in the display so the timer would keep counting.

3.9 Automatic drill stop functionparameter in software/Active X17-13/OFF Y115 O FF

X17-14/OFF Y116 OFF D550-CH7/OFFD550-CH8/OFFD550-CH15/OFF X12-2/ON Y178

• Engine rpm will be lowered to 1500 rpm.• The drill lever is automatically shifted to rapid feed/threading mode when the desired drill

depth/length is reached.

3.10 Water mist system (option)S130/Drilling pos. D552-CH1/ONS180/Compressor load (not PLC based condition)S446A/R d d fl h i D550 CH9/ON



S446A/Reduced flush air D550-CH9/ONAutomatic S448/Middle pos D554-CH4/ON X17-11/ON Y112A

X17-10/ON Y112C*Manual S448/Upper pos D554-CH3/ON X17-11/ON Y112A

X17-12/ON Y112BX17-10/ON Y112C*


2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay4. RAPID FEED STOP FUNCTIONS4.1 Rapid feed stop, forward

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS452/Rapid feed mode D550-CH11/ON X12-2/ON K178








D550-CH7/OFFD550-CH8/OFF

D550-CH15/OFFS113/Take up rod string D551-CH9/ONsoftware stop X16-10/ON *Y149

*Y149 only activated for 2 seconds.






• The stop signals come from HEC-3 program,and all the stop distances can be set in thedisplay. The signal is then sent to the PLC for 4.1

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay5. ROD HANDLING FUNCTIONS5.1 Open Gripper


5.2 Guide grip

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONS111/RHS lever in neutral D551-CH2/3/4/5/6/OFF


5.3 Hard grip S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFF

• Hard grip is the normal condition. No active inputs or outputs are required. Exceptions are Opengripper and Guide grip.

5.4 RHS, arm towards drill-centre with closed grippers (Tube in grippers)

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB118/RHS-arm in carousel X10-5/ONS111/Arm to drill centre D551-CH3/ON



S111/Arm to drill centre D551 CH3/ONOutlet hatch opens X15-4/ON Y310Arm movement starts X12-5/ON Y301B

⇓

Halfway sensor B119/ACTIVE X10-2/ONArm movement stops X12-5/OFF Y301B OFFGripper rotation starts towards drill centre X16-12/ON Y311B

⇓ Timer delay 3 sec after B119 is activated…Gripper rotation stops mechanically X16-12/ON Y311BArm movement continues X12-5/ON Y301BOutlet closes X15-4/OFF Y310 OFF

2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay5.5 RHS, arm towards drill-centre with open grippers

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB118/RHS-arm in carousel X10-5/ONS111/Arm to drill centre D551-CH3/ONS111/Push the top button D551-CH6/ON

Outlet hatch is closed X15-4/OFF Y310 OFFRod grippers open X12-3/ON Y300Arm movement starts X12-5/ON Y301B

⇓ Half way sensor B119/ACTIVE X10-2/ONArm movement stops X12-5/OFF Y301B OFFGripper rot. starts toward drill centre X16-12/ON Y311B

⇓ Timer delay 3 sec after B119 is activated…Gripper rot. stops mechanically X16-12/ON Y311BArm movement continues X12-5/ON Y301B

⇓ Arm in drill centre B120/ACTIVE X10-3/ONArm movement stops mechanically X12-5/ON Y301BGripper rot. stopped mechanically X16-12/ON Y311B


• The output X12-5 and X16-12 remain activated until the sequence is completed although thefunction is stopped mechanically.



2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay5.6 RHS, arm towards carousel with closed gripper (Tube in grippers)

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB178/Dis-ACTIVE X16-1/OFFB120/RHS-arm in drill centre X10-3/ONS111/Arm to carousel pos. D551-CH2/ON

Outlet hatch opens X15-4/ON Y310Arm movement starts X12-4/ON Y301A

⇓ Halfway sensor B119/ACTIVE X10-2/ONArm movement stops X12-4/OFF Y301A OFFGripper rot. towards carousel starts X18-1/ON Y311A


⇓ Magazine sensor B118/ACTIVE X10-5/ONArm movement stops mechanically X12-4/ON Y301AGripper rot. stopped mechanically X18-1/ON Y311AOutlet hatch is closed. X15-4/OFF Y310 OFF



• Outlet hatch will remain opened until last condition is fulfilled (B118 activated).



2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay5.7 RHS, arm towards carousel with open gripper

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/ACTIVE D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONS111/Push the top button. D551-CH6/ONS111/Arm to carousel pos. D551-CH2/ON

Outlet hatch is closed X15-4/OFF Y310 OFFOpen grippers X12-3/ON Y300Arm movement starts X12-4/ON Y301A

⇓ Halfway sensor. B119/ACTIVE X10-2/ONArm movement stops X12-4/OFF Y301A OFFGripper rot. towards carousel starts X18-1/ON Y311A


⇓ Arm in carousel B118/ACTIVE X10-5/ONArm in carousel stops mechanically X12-4/ON Y301AGripper rot. stopped mechanically X18-1/ON Y311A





2008-10-21 PLC Programme, ROC L8 30 and ROC L6 30 (Bosal cabin)Function Signal from/position Input/status Output Valve/relay5.8 RHS, carousel rotation, clockwise

S130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONORB119/RHS-arm in mid pos. X10-2/ONS111/Pos, to the left. D551-CH4/ON

Rotation starts B183/ACTIVE X13-1/ON X15-2/ON Y303A⇓ B183/Dis-ACTIVE X13-1/OFF

Rotation stops B183/ACTIVE X13-1/ON X15-2/OFF Y303A OFF⇓

Sequence complete


5.9 RHS, carousel rotation, anti-clockwiseS130/Drilling pos. D552-CH1/ON X11-1/OFF Y169 OFFS446/Impact switch off D550-CH9/10/OFFB379/Operator seat active D550-CH1/ONB120/RHS-arm in drill centre X10-3/ONORB119/RHS-arm in mid pos. X10-2/ONS111/Pos, to the right. D551-CH5/ON

Rotation starts B182/ACTIVE X14-8/ON X15-1/ON Y303B⇓ B182/Dis-ACTIVE X14-8/OFF

Rotation stops B182/ACTIVE X14-8/ON X15-1/OFF Y303B OFF⇓

Sequence complete




6. MONITORING FUNCTIONS6.1 Low hydraulic oil level, engine shut down


6.2 High hydraulic oil temperatureB362/90°C X16-5 X11-3/OFF K200 OFF

L7 40

Bosal

13

13a

14

15

13b

68

64

65

63



L7 40

Bosal

31

30

45



47f 47e47c 47d47a 47b

L740

Bosal

5b

66

66f

66e

66d

66a

66c

66b

4s4r

4q

4l4k

4n4e4i 4p

4m

4a

4x

4b

4w

4u

4t

4c

10



4s

4j4f

33

4d

4y

34

L7 40

Bosal

91

90

89

87

88

86858483

82

80

80b

80a



64

65

63

68

13

13a

14

15

13b

L7 40

Bosal

CR



31

45

L7 40

Bosal

CR



47f 47e47c 47d47a 47b

66

66f

66e

66d

66a

66c

66b

5b

4s4r

4q4p

4l4k

4n4m4e4i

4a

d

4x

4b

4w4t

4u

4c

10

L740

BosalCR



4j4f

3334

4d

4y

L7 40

Bosal

CR

97

95

96

93

94

91

89

88

90

87

86

8483

82

80a

80b

80

9885



L8 30

Bosal68

13

14

15

13a

13b

64

63

65



L8 30

Bosal45



47a 47b 47c 47d

L830

Bosal

66

66f

66e

66d

66a

66c

66b

4s4r

4q4p

4l4k

4n

4j

4i4m

4f

4e

4a

4b

4d

4c

4x

4w

4u

4t

10

5b



4j4f

4y

34 33

L8 30

Bosal

97

95

96

93

94

89

88

90

8786

8483

82

80a

80b

80

9885

9291

ROC L6 L8 SystemDescriptionBosal

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Transcript of ROC L6 L8 SystemDescriptionBosal