FINNISH INTERLOCKING REQUIREMENTS 2010 OUTDOOR … · 1 TRACK VACANCY PROVING EQUIPMENT ... 5 LINE...

FINNISH INTERLOCKING REQUIREMENTS 2010 - OUTDOOR EQUIPMENT REQUIREMENTS v1.3 14.5.2012

Finnish Transport Agency of 77

FINNISH INTERLOCKING REQUIREMENTS 2010

OUTDOOR EQUIPMENT REQUIREMENTS



Document title Document Date Name Pages 14.5.2012 FINNISH INTERLOCKING REQUIREMENTS 2010 - OUTDOOR EQUIPMENT

REQUIREMENTS

Revision history Revision Date Revision description 1.3 14.5.2012 Added stopping device, combined signal and changed ATP control lines in the requirements. OR029-

COM and OR205-REQ removed. 1.2 28.2.2011 Changes in chapter 2.2.1 concerning double and single diamond crossings with slips 1.1 15.11.2010 Editorial corrections to indexes and references 1 1.11.2010 Final version Detailed list of changes in version 1.3: - Removed Items with numbers: 039, 205. - Changed items with numbers: 071, 086 087, 099, 125, 126, 128, 144, 148, 162, 163, 177, 215, 251, 255, 267, 270, 272, 277, 288, 299, 315, 320, 323, 346, 351, 356, 361, 367, 368, 369, 370, 381, 382, 383 - Added items with numbers: 609 - 641



CONTENT

1 TRACKVACANCYPROVINGEQUIPMENT...................................................................................................................................................................7

1.1 General ........................................................................................................................................................................................................................................ 7

1.2 Track circuit ................................................................................................................................................................................................................................. 7 1.2.1 Functional requirements for track circuits .............................................................................................................................................................................................. 8 1.2.2 Boundaries of track circuits ..................................................................................................................................................................................................................... 8

1.3 Axle counters ............................................................................................................................................................................................................................... 9

2 POINTS...................................................................................................................................................................................................................................9

2.1 Powered points ............................................................................................................................................................................................................................ 9

2.2 Point types ................................................................................................................................................................................................................................. 10 2.2.1 Single point ............................................................................................................................................................................................................................................ 10 2.2.2 Long point .............................................................................................................................................................................................................................................. 12 2.2.3 Standard diamond crossing ................................................................................................................................................................................................................... 13 2.2.4 Powered derailer and stopping device .................................................................................................................................................................................................. 14 2.2.5 The interdependence between a powered derailer and a powered point connected to it .................................................................................................................. 14

2.3 Devices for local operation of a powered point ........................................................................................................................................................................... 15

2.4 Points, stopping devices and derailers to be operated with a lever ............................................................................................................................................. 16

2.5 Other special devices of a point .................................................................................................................................................................................................. 17

2.6 Point heating ............................................................................................................................................................................................................................. 17

2.7 Other special devices at the track ............................................................................................................................................................................................... 18

3 SIGNALS..............................................................................................................................................................................................................................18



3.1 General ...................................................................................................................................................................................................................................... 18

3.2 Main signals ............................................................................................................................................................................................................................... 19 3.2.1 Signal aspects ........................................................................................................................................................................................................................................ 19 3.2.2 Signal setting to "proceed" .................................................................................................................................................................................................................... 19 3.2.3 Signal aspect of a route on an occupied track ....................................................................................................................................................................................... 19 3.2.4 Setting signal automatically to "stop" aspect ........................................................................................................................................................................................ 20 3.2.5 Setting signal to "stop" aspect ............................................................................................................................................................................................................... 20 3.2.6 Setting a signal again to "proceed" aspect ............................................................................................................................................................................................ 20 3.2.7 Lamp and LED‐unit monitoring .............................................................................................................................................................................................................. 20

3.3 Distant signals ............................................................................................................................................................................................................................ 21 3.3.1 Aspects .................................................................................................................................................................................................................................................. 21 3.3.2 Distant signal on the same mast with a main signal .............................................................................................................................................................................. 21 3.3.3 Lamp monitoring ................................................................................................................................................................................................................................... 21

3.4 Shunting signals ......................................................................................................................................................................................................................... 22 3.4.1 Signal aspects ........................................................................................................................................................................................................................................ 22 3.4.2 Setting to "stop" aspect ......................................................................................................................................................................................................................... 22 3.4.3 Setting to "proceed with caution" aspect.............................................................................................................................................................................................. 23 3.4.4 Setting to "no aspects" aspect ............................................................................................................................................................................................................... 23 3.4.5 Lamp or LED‐unit monitoring ................................................................................................................................................................................................................ 23

3.5 Combined signal ......................................................................................................................................................................................................................... 23 3.5.1 Main route entry signal ......................................................................................................................................................................................................................... 23 3.5.2 Signal acting as a distant signal ............................................................................................................................................................................................................. 23 3.5.3 Shunting route entry signal ................................................................................................................................................................................................................... 24 3.5.4 Combined signal associated with local point operation permission area and signal acting as flank protection .................................................................................. 24 3.5.5 Monitoring of LED unit .......................................................................................................................................................................................................................... 24

3.6 Technical requirements of signal lamp circuits (including the LED‐units) ..................................................................................................................................... 24

3.7 Technical values of signal lamps ................................................................................................................................................................................................. 25

3.8 LED‐units .................................................................................................................................................................................................................................... 26 3.8.1 Classifications ........................................................................................................................................................................................................................................ 26 3.8.2 Environmental Requirements ................................................................................................................................................................................................................ 26 3.8.3 Physical Features ................................................................................................................................................................................................................................... 26



3.8.4 Optical Requirements ............................................................................................................................................................................................................................ 27 3.8.5 Mechanical Properties of the Lens ........................................................................................................................................................................................................ 28 3.8.6 Reliability ............................................................................................................................................................................................................................................... 28 3.8.7 Electrical Connection ............................................................................................................................................................................................................................. 28 3.8.8 Over Voltage Protection ........................................................................................................................................................................................................................ 29 3.8.9 Over Current Protection ........................................................................................................................................................................................................................ 29 3.8.10 Alignment of a LED‐unit .................................................................................................................................................................................................................... 29 3.8.11 Installation and Maintenance ........................................................................................................................................................................................................... 29

4 AUTOMATICTRAINPROTECTION(ATP)................................................................................................................................................................29

4.1 Signal aspects to be transmitted with ATP .................................................................................................................................................................................. 29

4.2 Connection of ATP to an interlocking .......................................................................................................................................................................................... 30 4.2.1 Encoder interface .................................................................................................................................................................................................................................. 30 4.2.2 Centralised ATP control ......................................................................................................................................................................................................................... 30

5 LINEBLOCK.......................................................................................................................................................................................................................31

5.1 General ...................................................................................................................................................................................................................................... 31

5.2 Line point equipment ................................................................................................................................................................................................................. 35

5.3 Line point operation and dependencies ...................................................................................................................................................................................... 36

5.4 Protection signal of a line point .................................................................................................................................................................................................. 39

6 CONTROLANDMONITORINGEQUIPMENT............................................................................................................................................................39

6.1 Graphical User Interface (GUI) .................................................................................................................................................................................................... 39

6.2 Remote control .......................................................................................................................................................................................................................... 40

6.3 Commands ................................................................................................................................................................................................................................. 41 6.3.1 Controlled elements .............................................................................................................................................................................................................................. 41 6.3.2 Critical commands ................................................................................................................................................................................................................................. 41



6.4 Operation and failure indications ............................................................................................................................................................................................... 42

6.5 Inhibition and note functions ..................................................................................................................................................................................................... 42 6.5.1 Principle ................................................................................................................................................................................................................................................. 42

7 CONNECTIONTOOTHERINTERLOCKINGSYSTEMS...........................................................................................................................................43

8 DEVICESRELATEDTOCONTACTLINE....................................................................................................................................................................43

9 LEVELCROSSINGSYSTEM............................................................................................................................................................................................43

9.1 Alarm information from interlocking system .............................................................................................................................................................................. 44 9.1.1 Level crossing system interdependences and indications to the interlocking system .......................................................................................................................... 44

9.2 Projecting operation of a level crossing system installation to the interlocking system ................................................................................................................ 45

9.3 Controls and indications from level crossing installation ............................................................................................................................................................. 46

9.4 The replacement switch in a level crossing system installation .................................................................................................................................................... 47

9.5 Maintenance road protection system ......................................................................................................................................................................................... 47

9.6 Swing bridge protection system .................................................................................................................................................................................................. 47

10 APPENDIX......................................................................................................................................................................................................................49



Identifier Requirements FIR-OR001-COM 1 Track vacancy proving equipment FIR-OR002-COM 1.1 General FIR-OR003-DK Tracks, which are part of a route track, must be divided for track sections and monitored with equipment for track

vacancy proving. FIR-OR004-REQ The following states of these track sections shall be monitored: FIR-OR005-REQ - Track section occupied/not occupied. FIR-OR006-REQ - Track section locked to a route / not locked. FIR-OR007-REQ - Track blocking FIR-OR008-DK The vacancy or occupancy of a track section is monitored primarily by track circuits or by axle counters. A part of these

devices are located at trackside, another part in a housing or in a cabinet at trackside. Track relays may be located either in cabinets or in a housing.

FIR-OR009-REQ When setting a route, it shall be possible to lock electrically track sections. FIR-OR010-REQ This locking is an electrical function, which is related to the route conditions of the interlocking system and it shall be im-

plemented in the interlocking system interdependencies. FIR-OR011-DK In addition to track circuits and axle counters, rail contacts, inductive track coils and techniques based on the

measurement of the train speed can be used to detect train movements. These are used mainly within level-crossing installations to give additional information to start and stop the warning.

FIR-OR012-COM 1.2 Track circuit FIR-OR013-REQ Track circuits can be DC, AC or coded audio-frequency track circuits. FIR-OR014-REQ Track circuits can be fed either at the end or at the middle and with either one-rail or two-rail isolation.

FIR-OR015-REQ The operation and capacity of track circuits shall be designed to meet the fail-safe principles in Finnish railway environment.

FIR-OR016-REQ The design values for a track circuit shall be as follows:

FIR-OR017-REQ - Ballast resistance 1.5Ω/km.

FIR-OR018-REQ - Traction 25kV/50Hz.

FIR-OR019-REQ - Return current on a track max 650A (on a double-track line). FIR-OR020-REQ - Draining transformer interval max 2.6km.

FIR-OR021-REQ - Interval of track contacts of the return wire max 2.6km.



Identifier Requirements FIR-OR022-REQ - Mast earthing to one rail directly (ground resistance of the mast min 10Ω). FIR-OR023-REQ - On a single track line mast earthing can be arranged also by a ground collecting wire.

FIR-OR024-REQ - Earthing of e.g. bridges is carried out by a grounding impedance bond on a section with double rail isolation. It shall be possible to install 1 bond/track km.

FIR-OR025-REQ - The power to a track circuit is fed from the power supply installation of the interlocking system. It is possible to feed from this installation also track circuits of a line block up to an adjacent interlocking system or a certain intermediate block station. If the feed frequency of the track circuits differs from 50Hz precautions shall be taken for using this power supply also for other equipment (e.g. signals).

FIR-OR026-COM 1.2.1 Functional requirements for track circuits FIR-OR027-REQ The equipment shall fulfil the following requirements unless it can be proved that a corresponding safety level shall be

achieved otherwise: FIR-OR028-REQ - A track circuit shall be adjustable so that the voltage between rails is at least 1.0V when a relay is de-energised.

FIR-OR029-REQ - A track circuit is considered to be clear first after 2 seconds of the energisation, at the track relay, while de-energisation of a relay influences the functions immediately.

FIR-OR030-REQ - The operation of a track circuit (relay) shall be monitored in the interlocking system and line block circuits so that if a track relay is not completely de-energised on a section,(or if it is energised too soon), the equipment detects the failure and it is indicated as an anomalous function (the route remains locked, the line block is not in the normal position), special measures are required by the operator.

FIR-OR031-REQ - The functions of track circuits based on their operating sequence shall be implemented so that the operation is not disturbed even with a short fast moving train if one of the two track circuits is short.

FIR-OR032-REQ - A random energising sequence of track relays after a voltage break in the feeding network of a track circuit shall not lead to hazardous actions (e.g. a premature release of the route).

FIR-OR033-REQ - The functional time delay of the operational units (track relay) of a track circuit shall not cause even a minor distur-bance, not even in a case of a fast moving train, so that a signal would give a more permissive signal aspect.

FIR-OR034-REQ - A short-circuit in the isolation of any two different track circuits will always cause de-energisation of both or at least one of the track relays.

FIR-OR035-REQ - The intermediate state of a track relay shall be detected as not detected and the track section is occupied. Route releasing operation shall not begin or operate.

FIR-OR036-COM 1.2.2 Boundaries of track circuits FIR-OR037-COM Usually the insulated joint is the boundary of track circuits. Some track circuits (e.g. audio-frequency track circuits) use

also electric separating joints which are tuned to the feed frequency.

FIR-OR038-REQ These devices shall need customer's acceptance for e.g. the accuracy of the electric separating joints.



Identifier Requirements FIR-OR040-REQ In several cases the operation conditions of the point shall be modified so that, in addition to the track section of the

point itself, also the adjacent track section is configured to be included in the conditions of normal operation, to ensure monitoring of a sufficiently long distance in front of the point blades.

FIR-OR041-REQ Equally, in the route conditions, the vacancy monitoring shall be extended to adjacent track sections, so that the route vacancy monitoring would range to the fouling sign of crossing tracks and the gauge (ATU) requirements are monitored.

FIR-OR042-COM 1.3 Axle counters FIR-OR043-DK The vacancy of a track section can be detected by an axle counter section instead of a track circuit. An axle counter

system has, at both ends of a certain track section, devices which count the number of axles entering and passing the section. By comparing these numbers a track section can be found either not occupied, occupied or in fault state.

FIR-OR044-REQ The devices and operation of an axle counter system shall fulfil the fail-safe requirements. FIR-OR045-REQ When using axle counters, line block and axle counting operations can be combined. Monitoring of track vacancy is

then included in the line block system. FIR-OR046-REQ Axle counters shall be applied in track section vacancy monitoring also when rail isolation cannot be realised. Such

cases are some bridges and tracks for the part of wagon weighing equipment. FIR-OR047-COM 2 Points FIR-OR048-COM 2.1 Powered points FIR-OR049-DK Points are used to lead rolling-stock from a track to another, parallel track, and as flank protection to a route. FIR-OR050-DK The powered points of an interlocking system are equipped with point machines. Usually a point has one point machine,

but special points have up to seven machines. There are point machines operating with electrical motor or electro hydraulic motor.

FIR-OR051-DK The motor of a point machine is usually a 3-phase squirrel cage induction motor 380V/50Hz. P = 0.4kW, turnover time 2-3s. In special cases (e.g. marshalling yards) the power of the motor is greater and the required turnover time 0.7-1.0s.

FIR-OR052-REQ A point machine may be equipped with a crank handle for operating the point e.g. at motor or power supply break-downs. The control and monitoring circuits are disconnected at crank handle operation.

FIR-OR053-COM The point machine requirements are specified separately. FIR-OR054-REQ The point operation and position monitoring usually use a 4-wire point circuit. FIR-OR055-REQ Because from the train safety point of view it is especially important that a point is and remains in the correct position

during train movement, corresponding special requirements shall be set also for the point-operating circuit. FIR-OR056-REQ Both the power supply of the motor as well as position monitoring of a point-operating circuit shall work reliably within

the given distances (interlocking system - point) and nominal values of cables used in Finland. FIR-OR057-DK When starting, point motors cause a current impulse. Several point machines may start simultaneously when locking a

route.



Identifier Requirements FIR-OR058-REQ In order to decrease their common start current, the point machines of the points included in a route shall be started at

50-100 ms intervals in one or two stepped chains. FIR-OR059-COM 2.2 Point types FIR-OR060-COM 2.2.1 Single point FIR-OR061-DIAG

A single point and its position indications. Position leading to the right-hand branch of the point is always + (plus) and that leading to the left-hand branch is – (minus).

FIR-OR062-REQ The double diamond crossing with slips must be configured as two single points in the interlocking system logic.

FIR-OR063-DIAG Double diamond crossing with slips

A

C

a d

A C

a

d

Track kilometres



Identifier Requirements FIR-OR064-REQ Routes of a double diamond crossing with slips

Point machine C Point machine A Route path of a double diamond crossing with slips

+ + a–d + b–d b–c + a–c

FIR-OR065-REQ A single diamond crossing with slips (FIR-OR066-DIAG and tables FIR-OR067-REQ and FIR-OR068-REQ ) must be managed in the signalling system logic as a double diamond crossing with slips which does not make possible the second route through the diverging track of the crossing.

FIR-OR066-DIAG Single diamond crossing with slips

A C

a

d

Track kilometres



Identifier Requirements FIR-OR067-REQ The point machine positions of a single diamond crossing with slips when the crossing does not make possible the

route a-c.

Point machine C Point machine A Route path of a single diamond crossing with slips

+ + a–d + b–d b–c

FIR-OR068-REQ The point machine positions of a single diamond crossing with slips when the crossing does not make possible the route b-d.

Point machine C Point machine A Route path of a single diamond crossing with slips

+ + a–d + a–c b–c

FIR-OR069-COM 2.2.2 Long point FIR-OR070-REQ Long points shall be equipped with two or more point machines and point detectors (figure FIR-OR071-DIAG) de-

pending on the construction of the point. FIR-OR071-DIAG Typical long points and their equipment:

FIR-OR072-REQ A long point may also be equipped with one or more point detectors. The monitoring of them shall be able to connect to usual point detector circuits.

1:15,5 ja 1:18 5000/2500 - 1:26c d

5000/3000-1:28 a b1:14 ja 1:11,1



Identifier Requirements FIR-OR073-REQ A point with a fixed crossing has at least two point machines and one with a movable crossing (movable frog) has at

least three point machines. FIR-OR074-REQ Point machines employed with a long special point shall be non-trailable type. FIR-OR075-REQ In order to minimise the start intervals of the point machines (max 200 ms is allowed), the control circuit of point

machines of a long special point shall be arranged so that they are in succession in the starting sequence of the point machines.

FIR-OR076-REQ In figure FIR-OR071-DIAG, part b and f, the starting sequence of the point machines is 5 and 6 simultaneously at first then 1, 2, 3 and 4. The movable crossing shall not necessary be turned simultaneously with the point blades.

FIR-OR077-REQ The control circuit of a long special point shall be such that when the first point machine has started, the operation is continued and carried out also for the part of all the other machines, even if the track section of the point becomes occupied between the start moments.

FIR-OR078-REQ The power supply system shall be designed so, that all the point machines which have to be turned simultaneously, can be fed also during the back-up power supply system is in use.

FIR-OR079-COM 2.2.3 Standard diamond crossing FIR-OR080-DIAG

Standard diamond crossing

FIR-OR081-DK A standard diamond crossing has two running alternatives, 1-2 and 3-4. A standard diamond crossing has no movable parts.

FIR-OR082-REQ A standard diamond crossing can also have track blocking, which shall be set with a special command. Command is given according to standard diamond crossing number as its parameter.

FIR-OR083-REQ In general the vacancy of a standard diamond crossing is monitored with a track circuit of its own. FIR-OR084-REQ In certain failure cases the fictive position of an occupied standard diamond crossing shall, after a failure, be set with a

special command. This requires a separate control command, even if the standard diamond crossing has no movable parts.



Identifier Requirements FIR-OR085-COM 2.2.4 Powered derailer and stopping device FIR-OR086-DIAG

Pla

V

Powered derailer Stopping device

FIR-OR087-DK The purpose of a derailer is to stop or to derail rolling-stock which tries to run past the derailer. Derailers are used mainly on loading tracks to give flank protection to route tracks. Instead of a powered derailer, a stopping device, which fulfils the requirements presented for a derailer, can be used.

FIR-OR088-REQ A powered derailer is controlled and monitored in the same manner as a point and the same point machine is applied to it.

FIR-OR089-REQ The functioning of the derailer equipped with a derailer machine must be equivalent to the point equipped with a point machine except that vacancy of the track section, which the derailer belongs to, must only be proven when turning the derailer onto the rail.

FIR-OR090-COM 2.2.5 The interdependence between a powered derailer and a powered point connected to it FIR-OR091-REQ In certain separately specified cases a point and a derailer shall be connected in interdependence with each other. FIR-OR092-DIAG

Powered derailer and a point.

FIR-OR093-REQ In its normal position the derailer (Sp 322 figure FIR-OR092-DIAG) closes the loading track (151) from traffic and the point (V321) is in position for traffic on the route track (150).

FIR-OR094-REQ A derailer and a point are operated by the control command of the point. When the operator gives the command to turn the point (V 321) to lead to track proteced by the derailer (151), the derailer (Sp 322) must first be removed from the rail and the point (V 321) will not start turning until the derailer becomes monitored in the end position "Off the rail".



Identifier Requirements FIR-OR095-REQ When the operator gives the commad to turn the point (V 321) back to lead to the main track (150), the point and the

derailer receive the operational command simultaneously. FIR-OR096-REQ The automatic point operation, corresponding to the route, controls the connected operation of the point and the

derailer. FIR-OR097-REQ If, e.g. due to a break in power supply, the devices have remained in contradictory positions, the need for individual

operation is indicated on the display and the devices shall be set to their normal positions by individual commands. FIR-OR098-COM 2.3 Devices for local operation of a powered point FIR-OR099-REQ In general, it shall be possible to operate powered points, stopping devices and derailers locally as well (shunting work,

maintenance). Permission for local operation shall be obtained from the interlocking system. When the permission is given the point shall be operable with local operation button.

FIR-OR100-REQ Push-buttons for local operation are to be located max 75 m from the point (on the wall of a device cabinet or on a separate mast).

FIR-OR101-REQ The local operation buttons shall be located so that the operator can see the point and its identification from the position, where he is using the point operation buttons.

FIR-OR102-REQ The local point control box must be positioned in such a way that there is at least 1000mm of unobstructed space left in front of the local point control box, on the side of the switches, when taking into account the structure gauge of the adjacent tracks.

FIR-OR103-REQ Local operation push-buttons shall be installed on a metal local point control box. FIR-OR104-REQ The local operation buttons for individual points shall be easily recognized (e.g. marking, geographical panel). FIR-OR105-REQ Exactly one local point operation button and indicator shall be included in the local point control box for each point that

is included in at least one local operation permission group. FIR-OR106-REQ Exactly one local operation return button (for returning the local operation permission) and indicator shall be included in

the local point control box for each local point operation permission group, the points of which are included in the local point control box in question.

FIR-OR107-REQ Local operation indicator shall indicate the following states: FIR-OR108-REQ - No permission, no light. FIR-OR109-REQ - Permission given, the point is individually locked, no light FIR-OR110-REQ - Permission given, the point is in the end position, fixed white light. FIR-OR111-REQ - Permission given, the point is not in the end position, flashing white light. FIR-OR112-REQ Local operation permission indicator shall indicate the following states: FIR-OR113-REQ - No permission, no light. FIR-OR114-REQ - Permission given but monitoring conditions no longer valid, flashing white light. FIR-OR115-REQ - Local operation in order, fixed white light. FIR-OR116-REQ The frequency of the flashing light (FIR-OR111 and FIR-OR114) shall be between 2-10Hz.



Identifier Requirements FIR-OR117-REQ Several local point operation buttons can be located in one and the same casing if the points are adjacent to each

other. The indication of the end position shall be given point-wise. FIR-OR118-REQ The local point operation buttons should be organised according to the local point operation permission groups. FIR-OR119-REQ A point-operation button shall be constructed or protected mechanically so that there is no risk of freezing, when the

push-button is located in open air, due to which it would remain in the down pushed position and cause an unintentional point operation at the beginning when a permission is given.

FIR-OR120-REQ If the push-button is remaining in down pushed position, an alarm indication shall be given. FIR-OR121-REQ The command for turning the point with local operation button must not be stored or repeated afterwards if the point

can't be turned when the command is given. FIR-OR122-REQ The control circuit including the local operation button as well as the components of the circuit shall fulfil the fail-safe re-

quirements. Their operation shall be reliable within the defined distance and the defined cable types. FIR-OR123-REQ The inactivated position of the local operation buttons shall be monitored so that if any of the buttons of the permission

area in question is off its inactivated position uninterruptedly for more than a certain period of time (5s) a local permis-sion is prevented. When permission has already been given, the local operation of all the points in this permission area is prevented.

FIR-OR124-REQ When a temporary push-button failure withdraws by itself, the operation condition is restored automatically; otherwise, in case of a failure, a local permission shall be released with the emergency command of the interlocking. A failure situation is indicated on the command monitor of the interlocking system.

FIR-OR125-COM 2.4 Points, stopping devices and derailers to be operated with a lever FIR-OR126-DK A railway yard has also points, stopping devices and derailers which are always operated locally with a lever associated

with the point. FIR-OR127-REQ In some cases these elements shall be monitored in route conditions. Dependencies and lockings of these kinds of de-

vices are arranged with a key box, key lock and keys. FIR-OR128-REQ After using the lever operated point, stopping device or derailer the lever is locked in the basic position with a key lock,

and only then the key, specified to correspond to the point position, can be removed. FIR-OR129-REQ The key box accepts only this specified key. When the key box is locked, the key cannot be removed from the box. The

device (point, derailer) shall be monitored and locked. FIR-OR130-REQ When a point or a derailer is used, the key is released from the key box with a special interlocking system or local

operation command. FIR-OR131-REQ The key box is located in the vicinity of a point on the wall of a device cabinet or on a separate mast. FIR-OR132-REQ The key box shall have an indicator to show when the key can be removed. FIR-OR133-REQ The key box shall be weather resistant and installable in open air, or it shall be protected with a separate casing. The

indicator shall be visible without opening the casing.



Identifier Requirements FIR-OR134-REQ A key which is removed from a key box is taken to the control key lock of a locked device, which can be opened and

thus unlock the device. FIR-OR135-REQ The control key locks and their keys are of Finnish manufacture. The adaptation of key boxes to the keys of the control

key locks shall be negotiated separately with the customer. FIR-OR136-REQ It shall be possible to use the devices in failure situations either by a special emergency command or with spare key.

Spare keys shall be sealed. FIR-OR137-REQ The control and monitoring circuits of key boxes shall be implemented with devices and methods fulfilling the fail-safe

requirements. FIR-OR138-COM 2.5 Other special devices of a point FIR-OR139-DK In some cases separate point detectors are used. In powered points their monitoring can be added to the circuit of a

point machine, and in locally operated points it secures the key lock monitoring. FIR-OR140-REQ The point operating circuit and the key box monitoring shall have the possibility to include the point detector monitoring

as a part of the main control circuit. FIR-OR141-COM 2.6 Point heating FIR-OR142-COM More detailed information about point heating on the document B17 (Vaihteenlämmityksen tekniset määreet) of Finnish

Transport Agency. FIR-OR143-COM The information about the type of the point heating system is available from the Finnish Transport Agency FIR-OR144-DK The powered points of an interlocking system the powered stopping devices shall be equipped with point heating. Their

aim is to ensure the failure-free operation of the points and stopping devices in winter conditions. FIR-OR145-DK The heating devices include point heaters attached to stock rails of points, or, in some cases, to blades as well. FIR-OR146-REQ It shall be possible to control the point heating for each heating area manually (maximum heating time 2 hours) as well

as automatically with a thermostat. FIR-OR147-DK In general the power is 6-8kW per a pair of blades in a normal point. The power of a double diamond crossing varies in

the range of 24-32kW. The heating power of a long point is within a similar range. The power to the point heating is usually fed from transformers located in the railway yard.

FIR-OR148-REQ The points and stopping devices of a railway yard shall be arranged in heating groups, which comprise usually 1-10 points and/or stopping devices. Each group has a common control and indications.

FIR-OR149-REQ It shall be possible to control the existing point heating groups and power levels (see FIR-OR150-DK, FIR-OR151-DK, FIR-OR152-DK or configuration requirements).

FIR-OR150-DK The power of existing point heating is connected in three levels: 1/2 power, 3/4 power and 1/1 power. FIR-OR151-DK The indicator shall show, which power level is connected. The indicator shall display also failures in the control system. FIR-OR152-DK In the trackside equipment there are two main control contactors. One contactor connects the 1/2 power, the other 3/4

power and when both contactors are energised 1/1 power is connected.



Identifier Requirements FIR-OR153-REQ The contactors operate at 24VDC, 48VDC or 60VDC depending of the interlocking system. For the trackside contactor

control the interlocking system shall include potential-free relay contacts (60VDC/2A). FIR-OR154-REQ All indications shall be provided with a potential-free contact. FIR-OR155-REQ The parallel coupling of contacts provide the information that at least one of the two contactors is energised. This infor-

mation is used at the interlocking system for the point heating indication. FIR-OR156-REQ If one of the power levels is switched on and no common indication of energised contactors is received, the point hea-

ting is indicated to be defective. FIR-OR157-COM 2.7 Other special devices at the track FIR-OR158-DK Within the area of an interlocking system there may be, in addition to points and derailers, devices whose monitoring

and/or control is connected to the operation of the interlocking system. These devices include e.g. - swing bridges - wagon weighing equipment - track closing gates - marshalling yard rail brakes

FIR-OR159-REQ The connection of the equipment to an interlocking system and the requirements are described device-wise when they exist within the area of an interlocking system.

FIR-OR160-COM 3 Signals FIR-OR161-COM 3.1 General FIR-OR162-DK Associated with an interlocking system and a line block a locked route or permitted train movement is indicated to an

train driver with signals. Signals used in train traffic are: - main signal - distant signal - block signal - shunting signal ("Stop" -aspect or all aspects, when equipped with main route exit sign) - combined signal - locking signal

FIR-OR163-DK Signals used in shunting are: - shunting signal - combined signal - level crossing signal

FIR-OR164-COM Signal aspects are described and explained in appendix. FIR-OR165-REQ Signal units shall be traditional bulb units with double filament or LED-units according to the following requirements.



Identifier Requirements FIR-OR166-COM 3.2 Main signals FIR-OR167-COM For describing the signal patterns and colours the following signs have been used:

- red fixed light - yellow fixed light - green fixed light

FIR-OR168-COM 3.2.1 Signal aspects FIR-OR169-DK The signal aspects of a main signal are the following (in Finnish):

- stop (Seis) - proceed (Aja) - proceed 35 (Aja 35)

FIR-OR170-DK Meaning of the signal aspects: (in Finnish) FIR-OR171-DK Stop (Seis)

- The signal must not be passed. FIR-OR172-DK Proceed 35 (Aja 35)

- The signal may be passed, but there is a point or points on the route in diverging positions and the maximum speed is limited according to the point speed information of the ATP or if no information is available from the ATP it is limited to 35 km/h.

FIR-OR173-DK Proceed (Aja) - The signal may be passed, no speed limit due to point positions or the safety conditions of the route. A train may run at the line speed unless it is limited with local speed limit signs.

FIR-OR174-COM 3.2.2 Signal setting to "proceed" FIR-OR175-REQ When necessary, it shall be possible to configure the destination of the route so that the signal is not set to "proceed"

aspect until a separate command has been given. This case is possible on station exit routes leading to a line without block.

FIR-OR176-COM 3.2.3 Signal aspect of a route on an occupied track FIR-OR177-REQ When the route to an occupied track is set with a special command and locked, the main signal of the route is set to

display a visible signal aspect "proceed 35" and the fictive aspect in the centralized ATP control is activated. When the ATP control is realized with encoders measuring power consumption, the control line is activated in the situation where the route is set to an occupied track from a signal which can act as an entry signal of a main route to an occupied track.

FIR-OR178-REQ The distant signal on a separate mast belonging to the main signal displays the aspect which is in accordance with the visible aspect of the main signal.

FIR-OR179-REQ The aspect of the distant signal, on the same mast with a main signal, is set to ”expect stop” for the route on an occupied track.



Identifier Requirements FIR-OR180-COM 3.2.4 Setting signal automatically to "stop" aspect FIR-OR181-REQ A main signal shall usually automatically be set to "stop" aspect when the first track section in advance of the signal

becomes occupied. FIR-OR182-COM 3.2.5 Setting signal to "stop" aspect FIR-OR183-COM See appendix. FIR-OR184-REQ With a separate command it shall always be possible to set a signal to "stop" aspect immediately (without delay). A

locked route shall not be released. FIR-OR185-REQ Setting to "stop" aspect shall be recorded. FIR-OR186-REQ When setting the main signal of a route to "stop" aspect, all shunting signals included in the route are automatically set

to "stop" aspect. FIR-OR187-COM 3.2.6 Setting a signal again to "proceed" aspect FIR-OR188-COM See appendix. FIR-OR189-REQ If a signal is set to "stop" aspect with a command or by the disturbance of the route conditions they can be returned to

"proceed" aspect with a special command without releasing the route. FIR-OR190-REQ The shunting signals of the route may be returned at "proceed" aspect without a special proceed setting command after

the withdrawal of the break or interruption, except in case the shunting signal is associated with a route entry main signal.

FIR-OR191-COM 3.2.7 Lamp and LED-unit monitoring FIR-OR192-REQ The light units of the active aspect shall be monitored continuosly. FIR-OR193-REQ The requirements of continuous monitoring are fulfilled, if the monitoring interval is maximum 0,4 s. FIR-OR194-DK All lamps of a main signal shall be double filament lamps. Simultaneously the interlocking system receives a signal

failure message. When the LED-unit is broken, the signal failure message shall be sent to interlocking. FIR-OR195-REQ The state of both the main filament and the auxiliary filament shall be monitored. FIR-OR196-REQ When the main filament of a double filament lamp is broken, the auxiliary filament is energised. FIR-OR197-REQ The monitoring shall be either continuous or active only when a lamp is lit. If the monitoring is active only when the lamp

is lit, the operational check of the auxiliary filament shall be connected to an operation phase so that the state of auxiliary filaments is checked when the signal aspect is altered.

FIR-OR198-REQ Auxiliary filament monitoring may be arranged also as cold monitoring at certain intervals, but then there shall not appear visible light in the lamp.

FIR-OR199-REQ A filament break in a lamp included in an active signal aspect shall be indicated immediately. FIR-OR200-REQ If a signal becomes "dark" due to a breakage of both filaments or the LED-unit, this shall send a signal dark indication. FIR-OR201-REQ A failure indication of a signal shall state which signal unit contains a broken lamp or LED-unit.



Identifier Requirements FIR-OR202-REQ The failures in signal lamp circuits shall cause a failure message. These failures include a short circuit between the

wires of the signal circuits, an earth leakage and an external voltage caused by e.g. a short circuit between the wires. FIR-OR203-REQ The lamp circuits included in the "proceed" aspects shall be furnished with 2-pole disconnection. Also short circuit in a

lamp filament shall be indicated as a failure. As for "night" voltage, this requirement may be negotiated if ATP encoders are connected to the lamp circuit. When the lamp of "proceed" aspect is broken, the signal shall be set to "stop" aspect.

FIR-OR204-REQ Signals shall operate (failure messages included) both at the day voltage and at the night voltage. FIR-OR206-COM 3.3 Distant signals FIR-OR207-DK A distant signal is located at braking distance from the respective main signal. A distant signal indicates the aspect of

the next main signal. A distant signal is located either on a separate mast or on the same mast with a main signal. FIR-OR208-COM 3.3.1 Aspects FIR-OR209-DK The aspects of a distant signal are:

- "expect stop" aspect when the next main signal displays the stop aspect or the next block signal displays the stop aspect - "expect proceed 35" aspect when the next main signal displays the "proceed 35" aspect - "expect proceed" aspect when the next main or block signal displays the "proceed" aspect

FIR-OR210-REQ The "expect stop" aspect is given by two yellow lights, which means that the next main signal displays "stop" aspect (red) or that it is "dark". As a distant signal of a block signal it means that the block signal is at stop aspect.

FIR-OR211-REQ The "expect proceed 35" aspect is given by one yellow and one green light. FIR-OR212-REQ The "expect proceed" aspect is given by two green lights. FIR-OR213-COM 3.3.2 Distant signal on the same mast with a main signal FIR-OR214-REQ When a distant signal is located on the same mast with a main signal, the distant signal does not give any aspect when

the main signal which is on the same mast displays "stop" aspect or when the main signal is "dark". FIR-OR215-REQ If a route is set on a track where a shunting signal set to "stop" aspect is the main route exit signal or where there is no

signal at all (e.g. buffer or track without TVP), or if the route is a main route to an occupied track, the previous distant signal displays "expect stop" aspect.

FIR-OR216-REQ A distant signal does not act as a distant signal for other shunting signal aspects than "stop" located on a route. FIR-OR217-COM Appendix describes different cases of distant signals on a main signal mast. FIR-OR218-COM 3.3.3 Lamp monitoring FIR-OR219-REQ The control circuits of a distant signal shall fulfil the same requirements as a main signal for lamp monitoring as well as

revealing possibly existing failures. FIR-OR220-REQ A distant signal shall display an aspect respective to that of the main signal or in a lamp or LED-unit failure case an

"expect stop" aspect, if possible.



Identifier Requirements FIR-OR221-COM 3.4 Shunting signals FIR-OR222-DK A shunting signal is used:

- to control shunting - as flank protection of a route or local operation permission - as a sub-route signal indicating a train stopping point in case of a failure - as a main route exit signal, if the shunting signal is equipped with main route exit sign

FIR-OR223-COM For describing the signal patterns and colours the following signs have been used: - red fixed light - white fixed light

FIR-OR224-COM 3.4.1 Signal aspects FIR-OR225-COM See appendix FIR-OR226-DK The shunting signal aspects are: (in Finnish)

- Stop (Seis). - Proceed with caution (Aja varovasti). - No aspects (Ei opasteita).

FIR-OR227-REQ In the basic state, when a shunting route from the shunting signal or a main route from a track referred to by the shunting signal is not locked, the shunting signal displays "stop" aspect.

FIR-OR228-REQ The "proceed with caution" aspect means that the signal may be passed. FIR-OR229-REQ The "no aspects" aspect means that shunting work is not controlled by the shunting signal. FIR-OR230-REQ "No aspects" signal aspect is displayed when a local point operating permission is given for the area where the shunting

signal is located. Shunting movements are then controlled locally. FIR-OR231-REQ It shall be possible to set individually a shunting signal to display "no aspects" aspect. These cases are defined in

engineering documents of an interlocking system FIR-OR232-REQ The shunting signals of a shunting route shall display the "proceed with caution" aspect. FIR-OR233-REQ A shunting route shall also be locked from railway operating location to a line. FIR-OR234-COM 3.4.2 Setting to "stop" aspect FIR-OR235-COM See appendix. FIR-OR236-REQ With a separate command it shall always be possible to set a shunting signal from "proceed with caution" aspect to

"stop" aspect immediately (without delay). FIR-OR237-REQ If a shunting signal displaying "proceed with caution" aspect in a main route shall be set to "stop" aspect also the main

signal and other shunting signals in the route shall automatically be set to "stop" aspect. FIR-OR238-REQ Setting the shunting signal to "stop" aspect shall be recorded.



Identifier Requirements FIR-OR239-REQ A shunting signal displaying "no aspects" aspect can be set to "stop" aspect by releasing the local operating permission

respective to the shunting signal or by a separate stop command. FIR-OR240-COM 3.4.3 Setting to "proceed with caution" aspect FIR-OR241-COM See appendix. FIR-OR242-REQ When a shunting signal of a shunting route is set to "stop" aspect by a separate command it can be set back to

"proceed with caution" aspect by setting the same route without first cancelling it. FIR-OR243-COM 3.4.4 Setting to "no aspects" aspect FIR-OR244-COM See appendix. FIR-OR245-REQ Certain signals may be specified to belong to a separate local point operation group by which the signal can be set to

"no aspects" aspect. FIR-OR246-REQ If a shunting signal located in a local point operation group is set to "stop" aspect separately, it can be set to "no

aspects" aspect by a separate command, if the local point operation permission conditions are still fulfilled. Signals with this option are defined in the interlocking system plan.

FIR-OR247-COM 3.4.5 Lamp or LED-unit monitoring FIR-OR248-REQ A shunting signal shall employ double filament lamps or a LED-unit. FIR-OR249-REQ The lamp monitoring shall fulfil the same requirements as that of the main signal lamps. FIR-OR250-REQ The lamps of the shunting signal "proceed with caution" aspect are monitored so that when the main filament is broken

the auxiliary filament is energised and the interlocking system receives a lamp failure message. If also the auxiliary filament is broken the signal is set to "stop" aspect.

FIR-OR609-COM 3.5 Combined signal

FIR-OR610-COM The combined signal can be a main route entry signal, shunting route entry signal, signal associated with local point operation permission area, signal acting as a distant signal, signal giving only flank protection and/or a combination of the previous. The possible combinations are presented tín the table in the appendix.

FIR-OR611-COM 3.5.1 Main route entry signal FIR-OR612-REQ The combined signal can display 'Proceed', 'Proceed 35' and 'Stop' aspects FIR-OR613-COM The aspects and their meaning is presented in the appendix. FIR-OR614-REQ 'Proceed' aspect is displayed with a fixed green light. FIR-OR615-REQ 'Proceed 35' aspect is displayed with one fixed green and one fixed yellow light. FIR-OR616-REQ 'Stop' aspect is displayed with fixed red light. FIR-OR617-COM 3.5.2 Signal acting as a distant signal



Identifier Requirements FIR-OR618-REQ The combined signal can display 'Expect stop', 'Expect proceed 35' and 'Expect proceed' aspects. FIR-OR619-COM The aspects and their meaning is presented in appendix. FIR-OR620-REQ 'Expect stop' aspect is displayed with flashing yellow light. FIR-OR621-REQ 'Expect proceed 35' aspect is displayed with one flashing green and one flashing yellow light. FIR-OR622-REQ 'Expect proceed' aspect is displayed with one flashing green light. FIR-OR623-COM 3.5.3 Shunting route entry signal FIR-OR624-REQ The combined signal can display 'Stop'and 'Proceed with caution' aspects. FIR-OR625-COM The aspects and their meaning is presented in appendix. FIR-OR626-REQ 'Stop' aspect is displayed with one fixed red light. FIR-OR627-REQ 'Proceed with caution' aspect is displayed with one fixed white light. FIR-OR628-COM 3.5.4 Combined signal associated with local point operation permission area and signal acting as flank

protection FIR-OR629-REQ The combined signal can display 'Stop' and ' No aspects' aspects. FIR-OR630-COM The aspects and their meaning is presented in appendix. FIR-OR631-REQ 'Stop' aspect is displayed with one fixed red light. FIR-OR632-REQ 'No aspects' aspect is displayed with one fixed blue light. FIR-OR633-COM 3.5.5 Monitoring of LED unit FIR-OR634-REQ The active aspect must be monitored continuously. FIR-OR635-REQ The requirements of a continuous monitoring are fulfilled, if the interval between the monitorings is 0,4s at most. FIR-OR636-REQ Breaking off of the LED unit must be indicated. FIR-OR637-REQ The fault indication must include the information of the signal unit, which includes the faulty LED unit. FIR-OR638-REQ The faults in the LED circuits must be indicated. FIR-OR639-REQ The signal (including the fault indication) must function both with the normal daytime voltage and the night voltage. FIR-OR251-COM 3.6 Technical requirements of signal lamp circuits (including the LED-units) FIR-OR252-REQ The voltage of the signal lamp shall be 12V. FIR-OR253-REQ The power consumption of a lit signal lamp shall be at least 5W, when the signal lamp is connected in series with the

electronic encoder. FIR-OR254-REQ The power supply of the lamps shall utilise cables with 1.5mm2 wires which fulfil the requirements of signalling

systems. FIR-OR255-REQ The lamp transformers are usually located in a device cabinet in the railway yard. The circuit shall function under these

circumstances. FIR-OR256-REQ The display of a correct and faultless signal aspect shall be realised according to fail-safe requirements.



Identifier Requirements FIR-OR257-REQ In the operation of lamp circuits the following interference states shall be taken into consideration:

- voltage break or voltage drop - break of a wire - short circuit of a wire to other wires in the same electric circuit or to the frame or ground (earth leakage) or to other voltage sources - inductive interferences of other currents

FIR-OR258-REQ In an interference state the signal aspect shall be changed to a safer aspect. FIR-OR259-REQ The aspect displayed by a signal shall be monitored continuously or at such intervals that the monitoring can be

considered continuous. FIR-OR260-REQ The following signal aspects shall be furnished with 2-pole disconnection, ie. the contact of the control relay in both

wires of the signal lamp feeding circuit or a corresponding function with electronic components: FIR-OR261-REQ Main signal (in Finnish)

- ”proceed" (Aja) - "proceed 35" (Aja 35)

FIR-OR262-REQ Distant signal (in Finnish) - "expect proceed 35" (Odota aja 35) - "expect proceed" (Odota aja)

FIR-OR640-REQ The following light unit circuits of a combined signal must have 2-pole disconnection: - Green - Yellow - White

FIR-OR263-REQ The lamp circuit (12V) of the "proceed" aspects in association with ATP of main signals and "expect proceed" aspects of distant signals shall have encoders. They may be included also in the lamp circuit of the "proceed with caution" aspect of shunting signals.

FIR-OR641-REQ The green light units of a combined signal are connected with ATP encoders measuring power consumption. FIR-OR264-REQ It shall be possible to switch between the day and night manually and automatically with light sensitive diode. FIR-OR265-REQ To ensure the correct function of the ATP encoders the lamp circuit and the power supply of the interlocking system

shall be designed so that the lamp current of a signal in proper order will under no circumstances be less than 1.2A. FIR-OR266-REQ If the LED-signal shows "proceed" aspect while the power breakdown, it shall be set automatically to the "proceed"

aspect when the voltage is connected again. FIR-OR267-COM 3.7 Technical values of signal lamps FIR-OR268-DK All signal lamps are double filament lamps. Their second filament is used as an auxiliary filament which is energized

when the main filament is broken.



Identifier Requirements FIR-OR269-REQ The power of both filaments of a double filament lamp shall be 20W/20W, except in a shunting signal 10W/10W

Voltage 12V. Clear bulb. 3.8 LED-units FIR-OR270-COM

3.8.1 Classifications FIR-OR271-REQ LED-unit has to be CE-approved. FIR-OR272-REQ LED-unit has to have a marking to indicate the colour of light according to the DIN-strandard 6163. FIR-OR273-REQ There has to be a marking to indicate the type, version and serial number of the LED-unit. FIR-OR274-REQ There has to be a marking to indicate the manufacturer and the date of manufacturing. FIR-OR275-REQ There has to be a warning text if it is forbidden to look directly to the LED-unit's light beam. FIR-OR276-REQ All mandatory classifications that are marked on the LED-unit have to be easily detectable and clearly visible. FIR-OR277-COM 3.8.2 Environmental Requirements FIR-OR278-REQ LED-units classification for casing (including inlet sleeve, grommet and shield case) has to be at least IP54. FIR-OR279-REQ LED-unit has to be operational at least 1400 meters above sea level. FIR-OR280-REQ Inside the shield case the LED-unit has to tolerate a pulse-shaped change of air pressure of at least ∆P ± 2kPa. FIR-OR281-REQ LED-unit's shield case or LED-unit, which is mounted without a shield case, has to tolerate, a pulse-shaped change of

air pressure of at least ∆P ± 5kPa. FIR-OR282-REQ LED-unit and LED-unit's shield case have to tolerate temperature changes according to EN 50125-3 Class T2. FIR-OR283-REQ LED-unit and LED-unit's shield case have to tolerate the relative humidity according to EN 50125-3 Class T2. FIR-OR284-REQ The shock resistance of the LED-unit's shield case has to be according to EN 60598-1 class IR3. FIR-OR285-REQ There must not be any light emitted from the back of the signal with LED-units, when LED-unit is activated. FIR-OR286-REQ The colour of LED-unit shield case's rear panel has to be black and it has to be made of antireflective material. FIR-OR287-REQ LED-unit has to meet requirements presented for electromagnetic compatibility in prEN 50121. FIR-OR288-COM 3.8.3 Physical Features FIR-OR289-REQ There are no weight limitations for LED-unit. FIR-OR290-REQ LED-units physical limitations are restricted by the front plate of the signal and the size of the shield case on the mast. FIR-OR291-REQ - It must be possible to mount a LED-unit to signals, which are designed to be used with traditional lamps FIR-OR292-REQ - If a LED-unit is being used in a signal's case that has been specifically designed for LED-units, it must be possible to

fit the LED-unit in a space with the following dimensions: FIR-OR293-REQ - width 144mm FIR-OR294-REQ - height 150mm



Identifier Requirements FIR-OR295-REQ - depth 164mm FIR-OR296-REQ - diameter of the light hole is 100 mm FIR-OR297-REQ LED-unit shall tolerate the pressure shock and vibration of a passing train travelling at least 300 km/h, when the signal

structure is located at least 2500 mm from the centerline of the track. FIR-OR298-REQ LED-unit shall not vibrate mechanically in a way that is observable to a driver of a passing train. FIR-OR299-COM 3.8.4 Optical Requirements FIR-OR300-REQ LED-unit's light intensity shall be adjustable to illumination conditions so that they meet the following minimum

requirements: Signal Intensity at night

voltage Intensity at day voltage

Shunting signal, Level-crossing signal

75 - 225cd 250 - 750cd

Other signals 250 - 750cd 800 - 2400cd

FIR-OR301-REQ LED-unit's light intensity has to be adjustable separately according to day and night voltage. FIR-OR302-REQ LED-unit's light intensity has to be adjustable according to FIR-OR300-REQ so that the brightness of all displayed

colors shall be sensed with required intensity. FIR-OR303-REQ The luminous intensity shall be at most 50% when measured from 4 degree angle from the optical axle of the LED-unit. FIR-OR304-REQ The LED-unit should give a circle-shaped illuminated area when observed further (>10 meters) away from the light

source. FIR-OR305-REQ The illuminated area should be uniform so that the ratio between the weakest and the strongest intensity is better than

1:15. The area of measurement is circular and the diameter is 2.5cm, based on EN12368:2000. FIR-OR306-REQ The elements of the LED-unit should be arranged so that a fault in one element or in a group of elements does not have

a significant effect on the distribution or the light intensity of the illuminated area. FIR-OR307-REQ The LED-unit must not display a wrong aspect, because of reflection from other light sources or background lighting. FIR-OR308-REQ The ratio between the luminous intensities of the LED-unit and the phantom light effect caused by other light sources

must be at least 16 according to standard EN 12368:2000 (Class 5). FIR-OR309-REQ The colour of the LED-unit must be based on the standard DIN 6163-4. FIR-OR310-REQ The variation below 60 Hz in the luminous intensity of the LED-unit must not exceed the limits of +20% and -20%. FIR-OR311-REQ The LED-unit must reach the required luminous intensity in 75 ms after the control voltage has been engaged FIR-OR312-REQ The LED-unit must reach the luminous intensity of 0 cd in 75 ms after the control voltage has been disengaged. FIR-OR313-REQ The LED-unit must be able to produce blinking light at least at a frequency of 1Hz. FIR-OR314-REQ The lowest and highest intensity levels of a blinking light must be adjusted.



Identifier Requirements FIR-OR315-COM 3.8.5 Mechanical Properties of the Lens FIR-OR316-REQ The lens can be made of self-cleaning material. FIR-OR317-REQ The impact resistance of the lens must fulfil the requirements of the test EN60598-1 class IR3. FIR-OR318-REQ The hardness of the lens must be at least 3 in Moh-scale. FIR-OR319-REQ The lens must stay transparent and unfrozen in all climate circumstances. FIR-OR320-COM 3.8.6 Reliability FIR-OR321-REQ Every element in a LED-unit must be engaged so that a fault in a single element does not reduce the luminous intensity

of the whole unit more than 20%. FIR-OR322-REQ The luminous intensity of the LED-unit must not decrease more than 50% after 100 000 hours in use. FIR-OR323-COM 3.8.7 Electrical Connection FIR-OR324-REQ The nominal voltage of the LED-unit is 12VDC or AC. FIR-OR325-REQ LED-units function with one electric circuit. FIR-OR326-REQ The intake power of the LED-unit has to be designed so that the engaged ATP-encoder is functioning reliably. The

power steps for the ATP-encoder are as follows: FIR-OR327-REQ - under 1W for passive input (LED-unit is off) FIR-OR328-REQ - over 5W for active input (LED-unit is on) FIR-OR329-REQ The connection cable between the LED-unit and the connection box for ending the supply cable from the interlocking

must fulfil the environmental requirements on chapter 3.7.2. FIR-OR330-REQ A cable which fulfils the requirements of the signalling systems and includes wires that have a surface area more than

1.5mm2, can be used as a connection cable for the LED-unit. FIR-OR331-REQ The minimum length of the connection cable is 2 meters. FIR-OR332-REQ The bushing seal in the casing of the LED-unit must suit for the connection cable and the way of making the connection. FIR-OR333-REQ A plug that is used for the connection must have a lifecycle of 1.5 times the lifecycle of the LED-unit. FIR-OR334-REQ The installation of correct LED-unit to the correct place and correct control circuit of the signal must be secured

mechanically or by using colour codes in the connection plugs or cables. FIR-OR335-REQ The LED-unit shall be connected to ground with at least 2.5mm2 fine-grained cables. FIR-OR336-REQ For the protective ground connection there must be an M6 screw connection in the inner surface of the casing of the

signal. FIR-OR337-REQ For the casing's ground connection to the signal mast structure there must be an M8 screw connection in the outer

surface of the casing. FIR-OR338-REQ In the functionality of the internal electric circuit of the LED-unit the following malfunctions have to be taken into

account: FIR-OR339-REQ - break in voltage supply



Identifier Requirements FIR-OR340-REQ - cable break FIR-OR341-REQ - the short cicuit of a cable to its own electric circuit, frame or ground FIR-OR342-REQ - the effect of induction of the currents nearby the circuit FIR-OR343-REQ If the self diagnostics of the LED-unit detects any faults it has to switch itself to safer state. FIR-OR344-REQ In the input circuit of the LED-unit there must be at least 1-pole break circuit, for example with a relay contact or

electronical components. FIR-OR345-REQ The interlocking controls the circuits that give "proceed" aspects. These circuits have to contain 2-pole break circuits. FIR-OR346-COM 3.8.8 Over Voltage Protection FIR-OR347-REQ There must be a possibility to connect an over voltage protector to the LED-unit. FIR-OR348-REQ It must be possible to check visually if the over voltage protector is damaged. FIR-OR349-REQ A commercially available over voltage protector components have to be used for the over voltage protection. FIR-OR350-REQ The over voltage protector has to function before the over voltage does any harm to any other components. FIR-OR351-COM 3.8.9 Over Current Protection FIR-OR352-REQ There must be a possibility to connect an over current protector to the LED-unit. FIR-OR353-REQ It must be possible to check visually if the over current protector is damaged. FIR-OR354-REQ The over current protector has to function before the over current does any harm to any other components. FIR-OR355-REQ After the over current protector is damaged the circuit must break so that the input current for the LED-unit is 0,0A. FIR-OR356-COM 3.8.10 Alignment of a LED-unit FIR-OR357-REQ There must be an inbuilt or separate adjustment mechanism for alignment of the LED-unit. FIR-OR358-REQ By using the adjustment mechanism it must be possible to align the LED-unit or the casing ± 12° horizontally and

vertically. FIR-OR359-REQ It must be possible to attach the adjustment mechanism to the installation hole bolt distribution of the signal's rear plate. FIR-OR360-REQ It must be possible to lock the adjustment mechanism mechanically. FIR-OR361-COM 3.8.11 Installation and Maintenance FIR-OR362-REQ It shall be possible to install and replace the LED-unit without any special tools. FIR-OR363-REQ When the LED-unit is broken it shall be possible to replace it in 15 minutes. FIR-OR364-REQ LED-units shall be maintenance free. FIR-OR365-COM 4 Automatic train protection (ATP) FIR-OR366-COM 4.1 Signal aspects to be transmitted with ATP FIR-OR367-REQ It must be possible to connect the ATP to the control lines in connection with the main, distant and combined signals

and with the aspects displayed by the signals.



Identifier Requirements FIR-OR368-REQ Interlocking shall transmit the aspects and control line status information defined in the appendix to the ATP. FIR-OR369-COM The determination and use of the control lines and fictive aspects, and the management of control line fault situations

are presented in appendix. FIR-OR370-REQ If an interlocking system is interfaced with a separate line block or to another interlocking system, the necessary

information in order to determine the fictive signal aspects or control lines behind the interface shall be available as a relay contact information in the interface circuit of the line block or consecutive interlocking system.

FIR-OR371-COM 4.2 Connection of ATP to an interlocking FIR-OR372-REQ There are two types of connection methods between the interlocking system to the ATP system: FIR-OR373-REQ - encoder interface FIR-OR374-REQ - centralised ATP control FIR-OR375-REQ The connection type is specified in the configuration requirements. FIR-OR376-REQ If the type of connection is not mentioned in the configuration requirements, the default connection shall be the encoder

interface FIR-OR377-COM 4.2.1 Encoder interface FIR-OR378-DK The information of visible signal aspects is transmitted to the ATP by an electronic encoder which is connected in series

with the signal lamp. The power drop caused by the encoder is at its most 1W when the lamp current conforms to the nominal daytime value (1.68A). One lamp circuit may have several encoders but even in such a case the value for the power drop is not exceeded.

FIR-OR379-REQ Due to the power limit required by the ATP the lamp current shall not be less than 1.2A even at the "night" voltage. FIR-OR380-REQ ATP encoders shall always be connected to secondary side of the signal circuits. FIR-OR381-REQ When the information on the control line status is to be transmitted to ATP, a signal circuit similar to normal signal

(control line) shall be constructed with the exception that there is no auxiliary filament. FIR-OR382-REQ The control circuit of this kind of control line shall be monitored. FIR-OR383-REQ It shall be possible to connect two encoders in the circuit of a control line. FIR-OR384-COM 4.2.2 Centralised ATP control FIR-OR385-REQ The interface between interlocking system and centralised ATP control is half duplex, asynchronous serial interface,

speed 19.2kbit/s and control signals RXD, TXD and GND are needed. Protocol can be e.g. 3964R. FIR-OR386-REQ The data link shall be supplied with a automatic switch-over stand-by system. FIR-OR387-REQ From the power supply of an interlocking system shall be reserved 24VDC, 50W for each centralised ATP control unit.

Power supply shall be galvanically isolated (over 2kV). FIR-OR388-REQ The centralised ATP control unit shall transmit all information needed from interlocking system to ATP. Fictive signals

are handled in the same manner as normal signals. FIR-OR389-REQ The interlocking system is sending telegrams to centralised ATP control unit and receives status indications.



Identifier Requirements FIR-OR390-REQ The interlocking system shall only send changed data and an acknowledge signal of the changes for confirmation.

Transmission time interval is 550ms. FIR-OR391-REQ In the exsisting centralised ATP control systems the status information of the signal in telegram is constructed with two

bytes. These two bytes include four separate parts, which transmit the signal aspect. Two parts include visible signal aspect, main and shunting signal, and the other two parts fictive signal aspect as described in appendix.

FIR-OR392-COM 5 Line block FIR-OR393-COM 5.1 General FIR-OR394-DK A line block system secures train traffic on line (= the area between the station entry signals of adjacent stations). FIR-OR395-REQ Line block shall function as a direction controller for the interlocking. FIR-OR396-REQ Trains shall not be allowed to enter the same line from different directions. FIR-OR397-REQ It must be possible to simultaneously set opposite routes for the line if the line has a line point and the distance between

route exit signals is at least 350m (FIR-OR400-DIAG) The section between the route exit signals must have a single piece of information about the block travel direction. The operation must be carried out on the line determined in the design criteria.

FIR-OR398-REQ The track section in advance of the line block exit signal must be vacancy proved in the conditions of the drive permitting aspects of the line block entry signal, if there is a passenger platform in advance of the line block exit signal closer than 350m from the line block exit signal or a release speed over 35 km/h has to be built for the line block exit signal.

FIR-OR399-DIAG

≥ 350m

Line point

The main signals of the line simultaneously functioning as the route exit signals of opposing routes.

FIR-OR400-DK A line comprises one block section (figures FIR-OR401-DIAG and FIR-OR405-DIAG) or it may be divided with block signals into several block sections (figure FIR-OR406-DIAG).



Identifier Requirements FIR-OR401-DIAG

There is only one block section between the stations. No separate main signal for the line.

FIR-OR402-REQ Each block section shall have separate equipment relating to only the specified section to monitor the vacancy of the track.

FIR-OR403-REQ The block section can be divided in to several track sections, if the block section is longer than the allowed track section or block section includes a level crossing system.

FIR-OR404-REQ Track vacancy proving shall operate without any gap also in this case. The line block shall include internal logic, which controls train moving from track section to another also inside the block section area.

FIR-OR405-DIAG

There is only one block section between stations. No separate main signals for the line. The distant signal respective to the station entry signal is located on the same mast with the previous station's exit signal (short distance between the stations).

Block section

Block section Line

Block section

Block section

Line




The line consists of several block sections in both directions.

FIR-OR407-REQ Block sections can be arranged also so that in one direction a line is divided into several block sections with main signals but in the other direction the line comprises only one block section (figure FIR-OR408-DIAG ).

FIR-OR408-DIAG

In one direction the line consists of several block sections. The other direction has only one block section.

FIR-OR409-COM Figures FIR-OR410-DIAG, FIR-OR411-DIAG, FIR-OR412-DIAG, FIR-OR413-REQ and FIR-OR414-REQ present different cases of block section division and signal location.

FIR-OR410-DIAG

The line has been divided into two and in other direction into three block section. On both station the distant signals of the block main signals are located on the mast of exit main signals.

Block section

Block section

Block section

Block section

Line

Block section

Block section

Block section

Block section

Block section

Line

Block section

Block section

Block section

Block section

Block section

Block section

Line




The main signals of an intermediate block section are usually located in the same point (one insulation section or axle counter unit of a track section).

FIR-OR412-DIAG

The main signals of an intermediate block can locate with a distance between each other so that the separate track section is included in the both signal block section.

FIR-OR413-DIAG

The main signals of an intermediate block can locate with a distance between each other so that the separate track section is included in the both previous signal block section.

FIR-OR414-DIAG

A main signal of a block section can have a separate distant signal, when the block sections are long.

FIR-OR415-REQ The distance between stations, consisting of only one or several block sections, constitutes a line. One direction of the line is always locked as the direction of traffic applying in uniformity on each of its block sections.

FIR-OR416-REQ The signals in this direction display aspects depending on the route conditions and the vacancy of the track sections. The signals of the opposite direction display "stop" aspect (figures FIR-OR417-DIAG and FIR-OR418-DIAG).

FIR-OR417-DIAG

Signal aspects in a traffic situation. Traffic from left to right.

Proceed/ Expect Proceed

Proceed/ Expect Proceed

Proceed/ Expect stop

Stop Stop

Stop Stop

Stop/- Stop/- Stop/- Stop/-

Stop/-

1.2km

> 2 km

2726 Er25/28

Er27/227 28




Signal aspects in a traffic situation. Traffic from left to right.

FIR-OR419-COM 5.2 Line point equipment

FIR-OR420-REQ Line points are connected to the line block interdependencies and its conditions by point locking and monitoring equipment.

FIR-OR421-REQ A point and its trap point (or derailer) on a line are locked with a key lock and the key is kept locked in the key box. In addition the position of the point is monitored by a point detector.

Stop/- Stop/-

Stop/- Stop/-

Stop

Stop

Stop/-

Proceed

Proceed

Proceed/ Expect stop

Stop

Proceed/ Expect proceed



Identifier Requirements

FIR-OR422-DIAG

Line point equipment on a block section line: Key lock k2 for point V1. Position control indicator Av for point V1. Key lock k1/k2 for trap point V2. Track section ErLv before trap point (about 25m) Key box near the point V2 Connection to the controlling interlocking system for local point operation permission.

FIR-OR423-COM 5.3 Line point operation and dependencies

FIR-OR424-REQ To indicate the permission there is an indicator associated with the key box and to return the permission there is a push-button.

FIR-OR425-REQ The functions of the key boxes and permission granting are in principle the same as in association with key boxes located in a railway yard.

FIR-OR426-REQ In association with permission granting, the block signal protecting a line point in a locked direction is set to "stop" aspect and the change of direction is disabled.

FIR-OR427-REQ Permission is given to a key box after a one minute delay.

FIR-OR428-REQ Another condition set to a key box permission of line point (figure FIR-OR429-DIAG) is that the track section of the line is occupied and the short track section of the secondary track is not occupied.

P 1 P 3

P P 6

Point

Interlockin




FIR-OR429-DIAG

FIR-OR430-DK

Operation of the key box of line point for entering the line point: - Contacting the operator and requiring permission. - The operator grants permission. P3 locks to "stop" aspect, direction change not allowed. - Key box permission is given within 60s delay, if ErL3 is occupied and ErLv not occupied (key box permission conditions shall be fulfilled 60 seconds). - The key can be taken from the key box and the points can be turned. Alternative procedure: Emergency key box permission is given after 60 seconds delay.

FIR-OR431-DK As a condition to the permission, when aiming to come from the line point to the line (figure FIR-OR432-DIAG), is that the track section of the line itself is not occupied and the short section of the secondary track is occupied.

P 1

P 4

P 3

P 6

Shunting unit

Interlockin

Point

Key




FIR-OR432-DIAG

FIR-OR433-DK

Operation of the key box when leaving from the line point: - Contacting the operator and requiring permission. - The operator grants permission after changing the direction permission according the figure. - P6 is locked to "stop" aspect, direction change is not allowed. - Key box permission is given within 60s delay, if ErL3 is not occupied and ErLv is occupied (key box permission conditions shall be fulfilled 60 seconds). - The key can be taken and the points can be turned.

FIR-OR434-DK When a shunting unit is closed on the secondary track or when it enters from there to the line track, the points are locked, the key is returned to the key box and the return button is pressed.

FIR-OR435-REQ The line block equipment shall automatically return at the basic state when the shunting unit has gone to the secondary track, the key is returned to the key box and the return button is pressed.

FIR-OR436-REQ

As for a unit entering from line point tracks, switching to the basic state is carried out when the equipment is locked to their basic state, the return button is pressed and the train has left the block section including the line point to the correct (locked) direction (figure FIR-OR437-DIAG).

Shunting unit

P 1 P 3

P 4 P 6

Point indicator

Direction permission

Interlocking Key




FIR-OR437-DIAG

FIR-OR438-DK

Locking a line point to basic state: - Contacting the operator and requiring permission - After the unit has entered the main track, the point is locked to basic state (protecting line traffic) and the key is returned to key box. - The unit can continue travelling to the line in the locked direction, if the information has been received from the operator.

FIR-OR439-DK The direction is changed to be correct to a shunting unit coming from the line point to open line before giving the permission.

FIR-OR440-COM 5.4 Protection signal of a line point FIR-OR441-REQ A line point is usually protected by the nearest main signal in the direction of traffic.

FIR-OR442-REQ If its distance from the line point is minor, two successive main signals in this direction operate as protection signals. In such case the above mentioned signal dependencies apply to both of these signals.

FIR-OR443-REQ The protection signal is specified in the interlocking system plan.

FIR-OR444-COM 6 Control and monitoring equipment

FIR-OR445-COM 6.1 Graphical User Interface (GUI)

FIR-OR446-REQ It must be possible to control the interlocking from a graphical user interface (GUI) with a mouse or a corresponding device.

FIR-OR447-REQ The GUI must indicate that the information updates, flashing functions and colours are functioning.

P 6

P 3 P 1

P 4

Shunting unit

Interlocking

Direction permission

Point indicator

Key



Identifier Requirements FIR-OR448-REQ The interlocking actions and alarms must be indicated on the visual display unit and recorded and saved. FIR-OR449-REQ The interlocking actions must be recorded and saved for at least two weeks. FIR-OR450-REQ It must be possible to transfer the saved actions to another system electronically. FIR-OR451-REQ The comment text set for the signalling element in the GUI must stop the command from advancing.

FIR-OR452-REQ The areas and equipment that are not controlled and monitored by the interlocking system shall not be visible in the GUI.

FIR-OR453-REQ The comment text must be confirmed before the command advances. FIR-OR454-REQ It must be possible to display diagnostics and state monitoring on monitor separate from control display.

FIR-OR455-REQ On a colour monitor the track scheme of a whole railway yard or a sectional area shall be displayed with the associated elements as well as status indications. These shall be displayed with different picture types in varying levels of detail.

FIR-OR456-REQ The customer shall separately specify safety requirements for the control and monitoring equipment in the configuration requirements.

FIR-OR457-COM 6.2 Remote control FIR-OR458-REQ An interlocking system shall be subject to local control, remote control and joint control. FIR-OR459-REQ The control methods shall be declared in configuration requirements.

FIR-OR460-REQ The command and status monitoring shall be provided with commonly used and defined interfaces.

FIR-OR461-REQ A remote control GUI shall operate with the same principle as the local control.

FIR-OR462-REQ The remote control system must enable the interlocking functions, which can be used when the interlocking is under local control, to be used in remote control.

FIR-OR463-REQ The conditions which secure the safety of implementing a command given by the remote control system, must be checked in an interlocking.

FIR-OR464-REQ The remote control system must monitor the confirming of a critical command, if the confirming of the critical command in question has not taken place in the interlocking.

FIR-OR465-REQ The remote control system does not need to fulfil the train control system requirement that a single fault in the train control system leads the train control system controllably into a safe state.

FIR-OR466-REQ The remote control system must be configured in such a way that it is possible to control one interlocking or part of an interlocking only from one user interface at a time. There may be several user interfaces in one remote control system.

FIR-OR467-REQ Giving any other commands by the remote control system than those associated with switching to remote control must be prevented in local operation.

FIR-OR468-REQ Giving any other commands by the interlocking system than those associated with switching to local operation must be prevented in remote control.

FIR-OR469-REQ Instructing a signal to display a ‘Stop' aspect may be possible by an interlocking command when the interlocking is in remote control and by a remote control command when the interlocking is in local operation.




FIR-OR470-REQ The remote control system indication must correspond to the interlocking indication. The remote control system can be used for providing additional information to the interlocking indication.

FIR-OR471-REQ The remote control system data communication lines must be duplicated, if the requirement for the duplicated data communication line exists in the design criteria.

FIR-OR472-REQ The remote control system must have an automatic train number function, which enables the automatic setting of the routes for a train on the basis of the programmed train number and the track section becoming occupied.

FIR-OR473-REQ It must be possible to associate the remote control system with a passenger information, electrified track’s remote control, fire or burglar alarm and other systems determined in the design criteria.

FIR-OR474-COM 6.3 Commands

FIR-OR475-REQ The signalling systems are controlled with commands given via the GUI.

FIR-OR476-REQ The command must be unambiguously separable from other commands.

FIR-OR477-REQ The interlocking commands are described in the Finnish Transport Agency's document Interlocking system functional requirements FR 1FIN Interlocking commands.

FIR-OR478-COM 6.3.1 Controlled elements FIR-OR479-REQ The interlocking system shall be capable of processing all commands given both from local and remote control.

FIR-OR480-REQ Remote control must be able to control and monitor all elements within the area of the interlocking.

FIR-OR481-COM 6.3.2 Critical commands FIR-OR482-REQ A critical command must not lead to control measures before it is confirmed.

FIR-OR483-REQ In order to achieve an optimal operation in the case of failure it shall be possible to operate certain elements during partial or total break down of the interlocking system.

FIR-OR484-REQ These operation commands are called critical override commands, because the safety conditions are partially (or totally) by-passed.

FIR-OR485-REQ Caution shall be taken that faulty operation doesn’t cause danger to traffic.

FIR-OR486-REQ Fail-safety is required for the input, processing and output of critical commands.

FIR-OR487-REQ The following commands must be critical commands:

FIR-OR488-REQ - commands related to the emergency release of a main route or overlap

FIR-OR489-REQ - commands related to the releasing of a locked block section or sections

FIR-OR490-REQ - the emergency release of the line or a track section on the line back to a basic state




FIR-OR491-REQ - the release of the blocking of the direction change of the line

FIR-OR492-REQ - the emergency release of the axle counter section to a basic state.

FIR-OR493-REQ - the emergency operation of the point while the track sections of the points are occupied or the point has been trailed.

FIR-OR494-REQ - the emergency giving and returning of local point operation and key box permission

FIR-OR495-REQ - the release of track blocking on a track section

FIR-OR496-REQ - the setting of a shunting route to a track with track blocking

FIR-OR497-REQ - route setting from a track with a contact line power to a track without a contact line or contact line without power

FIR-OR498-REQ - setting a main route to a track which is not a main signalled track

FIR-OR499-REQ - setting a route to an occupied track

FIR-OR500-REQ - ending the level crossing system alarm on a particular track

FIR-OR501-REQ - the command releasing the level crossing system barrier control and the control of the horizontal position of barriers from the route conditions

FIR-OR502-REQ - the emergency switch over between local control and remote control

FIR-OR503-REQ A command which is not required to be a critical command must be a normal command.

FIR-OR504-COM 6.4 Operation and failure indications

FIR-OR505-REQ Operation and failure indications of the controlled area are displayed to the operator on the monitor and with an alarm sound.

FIR-OR506-REQ The sound alarm can be muted by pressing a graphical confirmation button.

FIR-OR507-REQ The operation and failure indications must be presented in the GUI according to Finnish Transport Agency's document "Asetinlaiteilmaisut - Interlocking indications" (RHK 2700/043/2008) .

FIR-OR508-COM 6.5 Inhibition and note functions

FIR-OR509-COM 6.5.1 Principle FIR-OR510-REQ The inhibition function shall be established with a graphical inhibition guard. FIR-OR511-REQ Inhibition text prevents the entering of control commands and note text hinders the progress of command. FIR-OR512-REQ Inhibition and note text is directed mainly to track and point numbers.

FIR-OR513-REQ Certain other commands may be associated with note text e.g. local operation permission, control key box and points heating.




FIR-OR514-REQ The texts are described in Finnish Transport Agency's document "FR1 FIN INTERLOCKING COMMANDS" (2699/043/2008)

FIR-OR515-COM 7 Connection to other interlocking systems

FIR-OR516-REQ

It shall be possible to connect an interlocking system in joint operation with another interlocking system covering another part of the railway operating location. This joint operation means that in certain cases a route may consist of route elements within the area of both interlocking systems.

FIR-OR517-REQ

In joint operation the following alternatives may come into question as having a system interface an to an interlocking system: - Not a complete interlocking system, but only permission granting and indication transmitting. - Relay interlocking system. - Electronic interlocking system.

FIR-OR518-REQ All necessary interdependencies, controls, permission requests, permission grantings and indications shall be possible to be arranged with another interlocking system which is to be connected as having a system interface to this one.

FIR-OR519-REQ

This means that an interlocking system shall be able: - To connect external conditions (e.g. from potential free contacts) to its dependence conditions (e.g. routes) and transmit state information of its own to an external interdependence system according to fail-safe requirements. - To issue separate external commands and include parallel external output to its command. - To transmit separate indications to an external system and to connect a parallel output of its indication.

FIR-OR520-COM 8 Devices related to contact line

FIR-OR521-REQ The catenary sections are located so that on certain parts of the tracks the electricity can be switched off when neces-sary, e.g. because of a failure or work.

FIR-OR522-REQ The interlocking system shall be able to indicate which tracks or parts of a track are without electricity.

FIR-OR523-REQ

The voltage indication of a contact line is received by the interlocking system usually as information related to a track area. If the interlocking system receives this information as related to the circuit breakers of the catenary, the description of the logic needed as well as that of operation is attached to the plan separately.

FIR-OR524-REQ Information from the circuit breaker section locations is necessary in order to arrange right indications and dependencies, and they are presented in the interlocking system plan.

FIR-OR525-COM 9 Level crossing system

FIR-OR526-REQ

Level crossing system related to an interlocking system or a line block shall be, as for their operation, control and indications, connected to the functions of an interlocking system and the devices needed are to be constructed in the interlocking equipment.




FIR-OR527-REQ The control logic part of a level crossing system in an interlocking system shall give the control information to various devices; barriers, road signals and acoustic warning signals.

FIR-OR528-REQ This control information shall be implemented according to the fail-safe closed-circuit principle. The control relays are energised when the installation is in the basic state i.e. when it does not give an alarm.

FIR-OR529-COM 9.1 Alarm information from interlocking system

FIR-OR530-REQ The level crossing system installation shall be given four alarm informations: for signals, acoustic warning signals, right side and left side barrier control.

FIR-OR531-REQ The alarm information shall be independent from route setting and based on track sections occupancy in accordance with the later mentioned conditions about signals displaying "stop" aspect.

FIR-OR532-REQ The control can be constructed also as a serial port control and then the control channel does not limit the possible control solutions as basic information.

FIR-OR533-REQ The basic information can then serve the occupancy information of every route and the implementation of switching on and off the alarm, warning can be constructed in the level crossing system.

FIR-OR534-REQ Specially if the route can not be set and there exists an activation section between the signal and level crossing system installation, this section shall always be activated.

FIR-OR535-REQ Alarm information shall be projectable individually in every installation. FIR-OR536-REQ The projecting for acoustic warning shall be possible to be defined track-wise. FIR-OR537-REQ Alarm information shall become activated during resetting or a major failure in an interlocking system.

FIR-OR538-COM 9.1.1 Level crossing system interdependences and indications to the interlocking system

FIR-OR539-REQ

For a main and shunting route, which destination location reaches over a level crossing system installation, shall be possible to be projected a monitoring condition for barrier down position and a signal aspect delay condition. The time range is 0 – 60s.

FIR-OR540-REQ It shall be possible to project route-wise a monitoring period during which the barriers have to descend or the light and acoustic warning installation shall be activated. The time range is 0 – 60s.

FIR-OR541-REQ

The monitoring period shall begin when the barriers begin to descend. If the barriers do not descend within the given time range a failure message shall be given and the signal is set to "stop" aspect, if there exsists a locked route over the level crossing system installation and the signal locating in rear the level crossing system installation is showing any aspect permitting driving.

FIR-OR542-REQ The monitoring of the barrier down position shall be continuous.

FIR-OR543-REQ The failure indication shall be removed automatically, when the barriers are at monitored position. The failure indication shall be indicated to the operator.

FIR-OR544-REQ The barrier failure indication and the monitoring state of a level crossing system shall be monitored in the route conditions.




FIR-OR545-COM 9.2 Projecting operation of a level crossing system installation to the interlocking system

FIR-OR546-REQ For an activation track section of each track alarm control, it shall be possible to project the specified or several track sections in rear of the level crossing system.

FIR-OR547-REQ At the location of the level crossing system installation there shall be an alarm releasing section, which can be a track section included in the interlocking system or constructed with a separate unit detector.

FIR-OR548-REQ For main and shunting routes there can be more than one alarm activating track sections.

FIR-OR549-REQ If the track section in advance of the signal displaying "stop" aspect is part of the alarm activating sections, the occupancy of that track section shall activate the alarm independent of the signal.

FIR-OR550-REQ If a part of a level crossing system installation is on an overlap, the overlap sections shall be possible to be configured as alarm control activating sections.

FIR-OR551-REQ The operation of the level crossing system with different routes shall be presented with a table of functionalities. FIR-OR552-REQ The beginning of the level crossing alarm shall be able to be delayed with one or more track sections.

FIR-OR553-REQ The alarm delay shall be different for each route and delay is active if activating sections are not occupied when setting the route. The time range is 0 – 120s.

FIR-OR554-REQ

If the alarm activating sections of a level crossing system installation are located in an area, which has local point operating permission, the operation of the level crossing system shall be possible to project so that when local point operating permission has been given the track section shall not influence to the operation of the level crossing system.

FIR-OR555-REQ

The operation of a level crossing system shall give a long alarm indication, if the level crossing system is active alarming continuously over 10 minutes in such a way that the road section has not become occupied after the start of the alarm or the road section is occupied while the alarm sections are vacant. The time range shall be able to be projected with 60s step track-wise.

FIR-OR556-REQ The level crossing signal must be instructed to display 'Approach with caution' aspect when a long alarm fault is detected in the level crossing system.

FIR-OR557-REQ The alarm of the level crossing system equipped with level crossing signals must end 20 seconds after the level crossing signal been instructed to display 'Approach with caution' aspect because of a long alarm fault.

FIR-OR558-REQ

During the long alarm fault the level crossing barrier system must rise to a position that corresponds with the position of non-voltage state of the barrier motor. Excluding the level crossing double barrier system, where the barriers of the lanes used by road vehicles must remain in a horizontal position.

FIR-OR559-REQ

Level crossing system for several tracks shall return to the state of the long alarm failure, if the long alarm failure conditions are satisfied, when the alarm caused by the other track than the track, which caused the long alarm fault, ends. Useampiraiteisen varoituslaitoksen on palauduttava pitkän hälytyksen vikatilaan, jos pitkän hälytyksen vian ehdot ovat voimassa muun raiteen kuin hälytyksen aiheuttaneen raiteen aiheuttaman hälytyksen päättyessä.




FIR-OR560-REQ

The time control is activated from the start of the warning signal. When more than one train is passing simultaneously the level crossing installation, the time control of the parallel tracks shall start from begin every time when new train activates an alarm.

FIR-OR561-REQ The monitoring of a long alarm shall not be executed, if the level crossing system has been activated with installation-wise constant alarm command or with the TK-switch.

FIR-OR562-COM 9.3 Controls and indications from level crossing installation FIR-OR563-REQ The level crossing system shall indicate 3 barrier positions 0, 60 and 90.

FIR-OR564-REQ It shall be possible also to include a track section which is not included in the interlocking system as an operating track section of level crossing system.

FIR-OR565-REQ The interdependencies of a level crossing system shall be possible to be moved to the area controlled by another interlocking system.

FIR-OR566-REQ When a failure is occurring in a level crossing system, it shall be possible to switch off the operation of a level crossing system with the user switch KK.

FIR-OR567-REQ The level crossing system shall be set to basic state and no failure indications are given, when the user switch (KK) is operated. The interdependencies of the level crossing system with the interlocking system are not valid.

FIR-OR568-REQ The use of the user switch (KK) and the replacement switch shall override level crossing system installation interdependences in route conditions.

FIR-OR569-REQ After returning the user switch to operation position, the level crossing system shall be returned immediately to an active operation for alarm and failures.

FIR-OR570-REQ The removal and returning of the level crossing system operation shall be indicated to the operator.

FIR-OR571-REQ The status information of a track-wise alarm and turn off switch and an installation-wise TK-switch shall be possible to connect to the interlocking part of the level crossing system installation also from rail yard location near the installation.

FIR-OR572-REQ The function of track-wise alarm and turn off switches shall be the same as interlocking commands. Switching off shall be possible only with TREI-switch or TPOIS command.

FIR-OR573-REQ TREI-switch shall not turn off the alarm, but if a route has been locked through the level crossing system installation, the turn off possibility shall be able to be projected.

FIR-OR574-REQ The installation-wise alarm shall be activated by turning TK-switch and the alarm shall be switched off by turning the switch again.

FIR-OR575-REQ The indication of manual operation shall be given from the interlocking part with a potential free contact to an indication lamp locating near the switch (light on/off).

FIR-OR576-REQ If the alarm releasing track sections are not included in the interlocking system, the status of these track sections shall be indicated on monitor and failure indication must be shown (registered) also to monitor and printer.

FIR-OR577-REQ Controls and indications shall be processed according to the fail-safe principle.




FIR-OR578-COM 9.4 The replacement switch in a level crossing system installation

FIR-OR579-REQ When the interlocking system has a failure, the interdependencies of a level crossing system in the interlocking system shall be able to be removed with a replacement switch locating in the housing or with a similar manner.

FIR-OR580-REQ

Replacement switch shall be used when: - interlocking system failure occurs - testing the interlocking system - the outside equipment of a level crossing system installation are not operating

FIR-OR581-REQ

When operating the replacement switch all the controls of a level crossing installation are at basic state, no failure indications are given. The interdependencies of the level crossing system in the interlocking system are not valid and commands are in passive state.

FIR-OR582-REQ After returning the replacement switch the level crossing system installation shall return immediately active for alarm and failures.

FIR-OR583-COM 9.5 Maintenance road protection system

FIR-OR584-REQ The maintenance road protection system must be connected to the interlocking in such a way that permission to use the maintenance road protection system is given through the interlocking.

FIR-OR585-REQ The interlocking shall monitor the locking and the horizontal position of the barriers or gates. FIR-OR586-REQ Setting a route through the maintenance road level crossing must be prevented if: FIR-OR587-REQ the barriers or gates are not closed FIR-OR588-REQ and FIR-OR589-REQ the barriers or gates are not locked FIR-OR590-REQ or FIR-OR591-REQ the permission to use the maintenance road protection system has been given

FIR-OR592-COM 9.6 Swing bridge protection system

FIR-OR593-REQ

A swing bridge must be equipped with a protection system, which prevents the opening of the bridge locking when a route has been locked over the bridge. Setting a route over the swing bridge must be prevented, when the bridge is not locked for railway traffic.

FIR-OR594-REQ A swing bridge must be equipped with locking signals. The bridge locking information must instruct the locking signals.

FIR-OR595-REQ A swing bridge must be equipped with main signals protecting the bridge. The main signals may be substituted by block signals if the bridge is located on a track with a line block system.

FIR-OR596-REQ The permission, which makes it possible to remove the locking of a swing bridge protected with main or block signals, but not trap points, can be given when the following conditions are fulfilled:

FIR-OR597-REQ the main or block signals protecting the bridge display a ‘Stop' aspect



Identifier Requirements FIR-OR598-REQ the track sections between the main or block signals and the protecting the bridge are vacant

FIR-OR599-REQ The following conditions shall be fulfilled before giving permission, which enables the bridge locking to be removed if there is a point between the signal protecting the bridge and the bridge, which can function as the trap point:

FIR-OR600-REQ the point functioning as the trap point must be locked in a position leading away from the swing bridge FIR-OR601-REQ the main or block signals protecting the bridge display a ‘Stop' aspect FIR-OR602-REQ the track sections between the trap points protecting the bridge are vacant

FIR-OR603-REQ The locking of a swing bridge can be opened, when the permission that enables the locking to be removed has been given for one minute and the conditions for giving the permission are in force.

FIR-OR604-REQ It must be possible to return the permission enabling the bridge locking to be removed by the return button of the bridge protection system when the bridge is locked, as well as by the system, which gives the permission.

FIR-OR605-REQ

A function that enables the emergency removal of the bridge locking without the monitoring conditions being fulfilled can be added to the swing bridge protection system. The emergency removal of the locking must instruct the main or block signals protecting the swing bridge to display a 'Stop' aspect and enable the bridge locking to be removed with a delay of at least one minute after the emergency function has been used.

FIR-OR606-REQ The swing bridge protection system must give the following indications to the interlocking or line block system that the bridge protection system is connected to:

FIR-OR607-REQ the state of the bridge locking FIR-OR608-REQ the state of the permission, which enables the bridge locking to be removed

49 OUTDOOR EQUIPMENT REQUIREMENTS v1.3 - APPENDIX 14.5.2012


10 Appendix

CONTENT

1 SIGNALSYSTEM.............................................................................................................50

1.1 Main, distant and shunting signals ................................................................................................ 50

1.2 Combined signals .......................................................................................................................... 54

2 EXAMPLESOFTHEFUNCTIONALTYOFDISTANTSIGNALONTHEMASTOFAMAINSIGNALINARAILWAYOPERATIONLOCATION..........................................59

3 EXAMPLESOFTHEFUNCTIONALTYOFDISTANTSIGNALINBLOCKSECTIONS.................................................................................................................................61

4 EXAMPLESOFTHEOPERATIONOFTHECOMBINEDSIGNAL........................63

5 SIGNALOPERATIONDURINGFAILURE.................................................................67

5.1 Main, distant and shunting signals ................................................................................................ 67

5.2 Combined signals .......................................................................................................................... 69

6 CONTROLLINESANDFICTIVEASPECTS...............................................................70

7 MANAGEMENTOFTHEFAILURESITUATIONSOFTHECONTROLLINES..77



1 Signal system

1.1 Main, distant and shunting signals In this document two methods for indicating the main and distant signal aspects in the pictures are used. There are colours (green, red and yellow) and there are lines drawn in the circles that indicate lamp units for black/white printing purposes. The indications are as follows:

For the shunting signals colours are only used to indicate red. The shunting signal aspects are as follows:

The main. distant and shunting signals and their aspects are introduced in this chapter in figures 1, 2, 3 and 4. The tables contain two columns. The first column describes an aspect visually with its abbreviation. In the other column the aspect is described verbally.

Figure 1. Main signal

red = stop

green + yellow = proceed 35

green = proceed

Po0

Po1

Po2

Po3/Po4

green + yellow = proceed 35 Point speed information transmitted to the ATP system.



Figure 2, Distant signal on separate mast

yellow + yellow = expect stop next main or block signal displays stop aspect (Po 0)

green + green = expect proceed next main or block signal displays proceed aspect (Po 1)

green + yellow = expect proceed 35 next main signal displays proceed 35 aspect (Po 2)

Eo0

Eo1

Eo2

Eo3/Eo4

green + yellow = expect proceed 35 next main signal displays proceed 35 aspect (Po 2) Point speed information transmitted to the ATP system.



Figure 3. Examples of distant signal with a main signal

red = stop dark = no distant signal information is given

Po0/Eo-

Po1/Eo1

Po1/Eo2

Po3/4 Eo3/4

green = proceed green + yellow = expect proceed 35 next main signal displays proceed 35 aspect (Po 2)

green + yellow = proceed 35 green + yellow = expect proceed 35 next main signal displays proceed 35 aspect (Po 2) Point speed information transmitted to the ATP system.

green + yellow = proceed 35 yellow + yellow = expect stop next main or block signal displays stop aspect (Po 0)

Po2/Eo0

green = proceed green + green = expect proceed next main or block signal displays proceed aspect



Figure 4, Shunting signal

red + red = stop - signal shall not be passed

white + white = proceed with caution - passing allowed

white = no aspects - passing allowed to a shunting train - used with local operation permission

Ro0

Ro1

Ro2



1.2 Combined signals In this document two methods for indicating the combined signal aspects are used. Firstly, the aspects are presented with colours in the Figures. Secondly, dirfferent colours are distinguished with individual line markings for gray scale printing. The flashing aspect has been presented with two circles within each other. The indications are as follows:

Red

Green Flashing green

Yellow Flashing yellow

Blue White

The light unit in the aspect to be displayed is dark The combined signals and their aspects are presented in this Chapter in Figures 5, 6, 7 and 8. The Figures include two columns. The first columns presents the visual aspect and its abbreviation. The second column the aspect is described verbally.The different combinations of the combined signal are presented in Table 1.

Figure 5. Combined signal, which can be a main route entry signal

red = Stop

Po0

Po1

Po2/Po3/Po4

green + yellow = Proceed 35

green = Proceed



Figure 6. Combined signal which can act as a distant signal

flashing yellow = Expect stop, the next signal displays 'Stop' aspect (Po0)

flashing green = 'Expect proceed', the next signal displays 'Proceed' aspect (Po 1)

flashing green + flashing yellow = 'Expect proceed 35', the next signal displays 'Proceed 35 aspect (Po2/Po3/Po4)

Eo0

Eo1

Eo2/Eo3/Eo4



Figure 7. Examples of combined signal which can be the main route entry signal and can act as a distant signal

red = Stop dark = distant signal information of the next signal is not displayed

Po0 Eo-

Po1 Eo1

Po2/Po3/Po4 Eo2/Eo3/Eo4

green + yellow = Proceed flashing green + flashing yellow= Expect proceed 35, the next signal displays 'Proceed 35' aspect (Po2/Po3/Po4)

green + yellow = Proceed 35vihreä + keltainen = Aja 35 flashing yellow = Expect stop, the next signal displays 'Stop' aspect (Po 0)

Po2/Po3/Po4 Eo0

gree = Proceed flashinf green = Expect proceed, the next signal displays 'Proceed' aspect (Po1)

Po1 Eo2/Eo3/Eo4

green = Proceed flashing green + flashing yellow = Expect proceed 35, the next signal displays 'Proceed 35' aspect (Po2/Po3/Po4)



Figure 8. Combined signal which can be the shunting route entry signal, signal associated with a local point operation permission area and a signal which provides flank protection

red = Stop

white = Proceed with caution

blue = No aspects

Ro0

Ro1

Ro2



Table1. The possible combinations of the combined signal and the requirements for

controlling and positioning the combined signal.

Concerning the controlling and positioning the signal one has to follow the requirements dealing with

mai

n si

gnal

shun

ting

sign

al

dist

ant s

igna

l

Main route entry signal, shunting route entry signal, signal associated with the local point operation group and distant signal.

X X X

Main route entry signal, shunting route entry signal and signal associated with the local point operation group. X X -

Main route entry signal, signal associated with the local point operation group and distant signal. X X X

Main route entry signal and signal associated with the local point operation group. X X -

Main route entry signal, shunting route entry signal, and distant signal. X X X

Main route entry signal and shunting route entry signal. X X -

Main route entry signal and distant signal. X - X

Main route entry signal. X - -

Shunting route entry signal and signal associated with the local point operation group. - X -

Shunting route entry signal. - X -

Distant signal. - - X

Signal associated with the local point operation group and giving only flank protection. - X -

Signal giving only flank protection. - X -



2 Examples of the functionalty of distant signal on the mast of a main signal in a railway operation location

Figure 9, Example 1 of the functionality of a distant signal on a mast of a main signal

Po1/Eo

Po0

Po1/Eo0

Po0

Po

Po2/Eo1

Po1/Eo2

Po2

Po0

Po0/Eo-

Po1

Po0



Figure 10, Example 2 of the functionality of a distant signal on a mast of a main signal

Po2/Eo1

Po1

Po0

Po0

Po2

Po2/Eo2

Po2/Eo2 Po0/Eo

Po0

Po2

Po0Po2/Eo2



3 Examples of the functionalty of distant signal in block sections

Figure 11, Example of the functionality of distant signal on a separate mast and on the mast of line main signal

Block section Block section

Po1/Eo0 Po0/Eo-

Po1/Eo1 Po1/Eo0

Po1/Eo1 Po1/Eo1 Po1/Eo0

Po0/Eo-

Po0/Eo-

Po1/Eo1

Eo

Eo

Eo

Eo Po1/Eo1 Po1/Eo1



Figure 12, Example of the functionality of distant signal on a separate mast and on the mast of line main signal or a main signal

Block section


Block section

EoEo

Po1/Eo1

Po1/Eo0

Po0/Eo

Po0/Eo

Po0/Eo- Po1/Eo

Po0/Eo

Po0/Eo

Po0/Eo

Po0/Eo

Po2/Eo

Po0

Po0Po0

Po0

Po1

Po1/Eo

Po2

Block section



4 Examples of the operation of the combined signal

Figure 13. Example 1 of the combined signal operation on a railway operating location

Po1/Eo1

Po0

Po0

Po

Po2/Eo1

Po1/Eo2

Po2

Po0

Po0/Eo-

Po1

Po1/Eo0

Po0



Figure 14. Example 2 of the combined signal operation on the railway operating location

Po2/Eo1

Po1

Po0

Po0

Po2

Po2/Eo2

Po2/Eo2 Po0/Eo

Po0

Po2

Po0



Figure 15. Example 3 of the combined signal operation on the line.


Po1/Eo0 Po0/Eo-

Po1/Eo1 Po1/Eo0

Po1/Eo1 Po1/Eo1 Po1/Eo0

Po0/Eo-

Po0/Eo-

Po1/Eo1

Eo1

Eo1

Eo1

Eo1 Po1/Eo1 Po1/Eo1



Figure 16. Example 4 of the combined signal operation

Po0/Eo-

Po2/Eo1

Block section


Block section

Eo1

Eo0

Po1/Eo1 Po1/Eo0

Po0/Eo- Po2/Eo1

Po0/Eo-

Po0/Eo-

Po0/Eo-

Po0/Eo

Po0

Po0Po0

Po0

Po1

Po1/Eo2

Po2

Po0/Eo-

(1200m)



5 Signal operation during failure

5.1 Main, distant and shunting signals Marking explanation: X Lamp light on (main or reserve filament) o Lamp dark (controlled) - Lamp dark (no control) + Lamp failure (both main and reserve filament) gr = green, ye = yellow, rd = red, wh = white Table 2, Main signal functionality during failure Main signal operational state rd gr ye aspect aspect Po1 X - - Po0 rd failure + - - signal dark system failure X - - Po0

aspect Po1 - X - Po1 gr failure X + - Po0

aspect Po2 - X X Po2 gr failure X + o Po0 ye failure X o + Po0 Table 3, Distant signal on separate mast functionality during failure

Distant signal on a separate mast operational state ye1 ye2 gr1 gr2 aspect aspect Eo0 X X - - Eo0 ye1 failure + X - - ye2 stays on ye2 failure X + - - ye1 stays on gr1 failure X X + - Eo0 gr2 failure X X - + Eo0

aspect Eo1 - - X X Eo1 ye1 failure + - X X Eo1 ye2 failure - + X X Eo1 gr1 failure X X + o Eo0 gr2 failure X X o + Eo0

aspect Eo2 X - - X Eo2 gr2 failure X X - + Eo0 ye1 failure + X - o ye2 stays on gr2 and ye1 failure + X - + ye2 stays on ye2 and gr1 failure X + + X Eo2

main signal failure X X - - Eo0 system failure X X - - Eo0



Table 4, Functionality of distant signal on a mast of a main signal during failure

Distant signal on a mast of a main signal operational state ye1 ye2 gr1 gr2 aspect main signal on the same mast displays Stop

- - - - Po0/Eo-

system failure - - - - Po0/Eo-

aspect Po1/Eo0 X X - - Po1/Eo0 ye1 failure + o - - Po0/Eo- ye2 failure o + - - Po0/Eo- gr1 failure X X + - Po1/Eo0 gr2 failure X X - + Po1/Eo0

aspect Po1/Eo1 - - X X Po1/Eo1 ye1 failure + - X X Po1/Eo1 ye2 failure - + X X Po1/Eo1 gr1 failure X X + o Po1/Eo0 gr2 failure X X o + Po1/Eo0

aspect Po1/Eo2 X - - X Po1/Eo2 ye1 failure + - - o Po0/Eo- ye2 failure X + - X Po1/Eo2 gr1 failure X - + X Po1/Eo2 gr2 failure X X - + Po1/Eo0 ye2 and gr1 failure X + + X Po1/Eo2



Table 5, Shunting signal functionality during failure

5.2 Combined signals The combined signal must settle to display 'Stop' aspect, if the LED unit needed to display 'Proceed' or 'Proceed 35' aspect breaks off in a situation, where the signal should display 'Proceed' or 'Proceed 35' aspect. The combined signal acting only as distant signal must settle to display 'Expect stop' aspect, if the LED unit needed to display 'Expect proceed' or 'Expect proceed 35' aspect breaks off in a situation, where the signal should display 'Expect proceed' or 'Expect proceed 35' aspect. The combined signal acting as main route entry signal must settle to display 'Stop' aspect, if the LED unit needed to display 'Expect stop' aspect breaks off in a situation, where the signal should display 'Expect stop' aspect. The combined signal must settle to display 'Stop' aspect, if the LED unit needed to display 'Proceed with caution' aspect breaks off in a situation, where the signal should display 'Proceed with caution' aspect. The combined signal must settle to display 'Stop' aspect, if the LED unit needed to display 'No aspects' aspect breaks off in a situation, where the signal should display 'No aspects' aspect.

Shunting signal operational state rd1 rd2 wh1 wh2 aspect aspect Ro0 X X - - Ro0 rd1 failure + X - - rd2 stays on rd2 isfailured X + - - rd1 stays on wh1 failure X X + - Ro0 wh2 failure X X - + Ro0

aspect Ro1 - - X X Ro1 rd1 failure + - X X Ro1 rd2 failure - + X X Ro1 wh1 failure X X + o Ro0 wh2 failure X X o + Ro0

aspect Ro2 - - - X Ro2 rd1 failure + - - X Ro2 rd2 failure - + - X Ro2 wh1 failure - - + X Ro2 wh2 failure X X - + Ro0



6 Control lines and fictive aspects Fictive aspects used in centralized ATP control: S36 "be prepared to stop" 3600 m Ssn no speed limiting information Sv1 speed limit due to points Sv2 speed limit due to points Skln track, to which a route has been set (n = 1-8) Svr main route to an occupied track Sov overlap information (used for overlap in advance of station entry signal) - information about point position ATP control lines in a system realized with encoders measuring power consumption: JKV-Po1 main signal aspect Po1 (Fig. 17) JKV-Po3 main signal aspect Po3 (Fig. 17) JKV-Po4 main signal aspect Po4 (Fig. 17) JKV-Eo1 distant signal aspect Eo1 JKV-Eo3 distant signal aspect Eo3 JKV-Eo4 distant signal aspect Eo4 JKV0 overlap information JKV1 - JKV4 route length and the point speed limit JKV5 route to a vacant track from a signal, which can be the entry signal to an occupied JKV6 - JKV9 track to which the route is set - point position information It must be possible to determine the combined control line JKV1+JKV2 instead of separate control lines JKV1 and JKV2. The control line JKV1+JKV2 must be active, when the conditions of control line JKV1 or JKV2 are realized. It must be possible to determine the combined control line JKV3+JKV4 instead of separate control lines JKV3 and JKV4. The control line JKV3+JKV4 must be active, when the conditions of control line JKV3 or JKV4 are realized. Only those control lines, which have been determined in planning to be realized, will be realized.



301

303

304

Track Speed limit on the divergingtrack of the point

Speed limit on the track

Main signal’s

Visible aspect

Aspectabbreviation

Control line

301 - > 80kph Aja Po1 JKV-Po1

302 80kph 80kph Aja 35 Po4 JKV-Po4

303 60kph 60kph Aja 35 Po3 JKV-Po3

304 35kph 35kph Aja 35 Po2 -

Figure 17. Forming of control lines JKV-Po1, JKV-Po3 and JKV-Po4 Fictive signal aspects in a centralized ATP control are formed from the aspects of the main or block signal in question and from the distant signal of the next signal as well as from the fictive signal aspects according to the principles presented in Figure 18 and Table 6. The ATP control lines in a system realized with encoders measuring power consumption function according to Figures 19 and 20 and according to Table 7. It must be possible to connect two encoder inputs to the control line. In this chapter "Projecting case" means that the functionality depends on the system layout. Table 6. Transmitting the fictive aspect to the ATP in a centralized ATP control.



Eo2 Eo3 Eo4 S36 Ssn Sv1 Sv2X o - - - Eo1 - o o o oX o X o o Eo2 - o o o oX o X X o Eo3 - o o o oX o X X X Eo4 - o o o oo X - - - - X o o o oX o - - - Eo1 - X - - -X o X o o Eo2 - X - - -X o X X o Eo3 - X - - -X o X X X Eo4 - X - - -o X - - - - X X - - -X o - - - Eo1 - - X - -X o X o o Eo2 - - X - -X o X X o Eo3 - - X - -X o X X X Eo4 - - X - -o X - - - - X - X - -X o X o o Eo2 - - - - -X o X X o Eo3 - - - - -X o X X X Eo4 - - - - -X o - - - Eo1 - - - X -X o X o o Eo2 - - - X -X o X X o Eo3 - - - X -X o X X X Eo4 - - - X -o X - - - - X - - X -

Sv2

Sepa

rate

mai

n si

gnal

in a

dvan

ce o

f the

si

gnal

in q

uest

ion

is d

ispl

ayin

g dr

ive

perm

ittin

g as

pect

o = Condition is not realizedX = Condition is realized

- = Condition is not examined

Fict

ive

aspe

ct w

hich

mus

t be

activ

ated

by

the

sign

al in

que

stio

n

S36

Ssn

Sv1

Signal in advance of the

signal in question

Distant signal in advance of the

signal in question can display

aspects

Aspe

ct d

ispl

ayed

by

the

dist

ant s

igna

l in

adva

nce

of th

e si

gnal

in q

uest

ion

Active fictive aspect of the signal in advance of

the signal in question

Sepa

rate

dis

tant

sig

nal o

r a

com

bina

tion

of m

ain

and

dist

ant s

igna

ls

Sepa

rate

mai

n si

gnal

Conditions for activation of fictive aspect



Eo = Distant signal vi = Green vi vi = Green/Green Po = Main signal ke = Yellow ke vi = Yellow/Green Vt = Point speed information * = Projecting case

vi vi

S36

* Po

* Eo vi vi

vi

ke vi

ke vi

S36

vi vi* Eo ke vi

S36

vi vi

vi* Po

* Eo

ke vi

* Eo

* Po vi

* Eo

ke vi

ke vi

* Po vi

* Eo

1200 m 1200 m

ke vi

ke vi

vi

vi vi

* Po

* Eo ke vi

ke vi

No*

1200 m

S36

vi vi* Eo ke vi

1200 m

* Eo

* Po

vi vi ke vi

Vt

ke vivi

*

* Po

* Eo vi vi

vi ke vi

ke vi

S36 S36

* Eo

* Po vi ke vi

vi vi ke vi

vi

vi vi

* Po

* Eo ke vi

ke vi

Vt*

1200 m

vi vi

SsnSsn

* Eo

* Po vi ke vi

vi vi ke vi

vi

vi vi

* Po

* Eo

* Po vi

* Eo

ke vi

ke vi

ke vi

ke vi

S36 S36

vi vi

vi* Po

* Eo

ke vi

ke vi

vi vi

Sv1

* Po

* Eo vi vi

vi

ke vi

ke vi

Sv1

ke vi

Vt* Eo

Eo

* Eo

* Po vi

ke vi

ke vi

Vt

ke vi

* Eo

Eo

Sv2

* Po

* Eo vi vi

vi

ke vi

ke vi

Sv1

vi vi

vi* Po

* Eo

* Eo

ke vi

ke vi

vi vi

* Po vi

ke vi

ke vi

Sv2

ke vi

ke vivi

vi vi

Sv1

* Po

* Eo

Figure 18: ATP fictive signal aspects; centralised ATP control

A signal unit and its fictive aspect connections

Next signal Previous signal



Table 7. Activation conditions of the control lines in an encoder connection

Eo2 Eo3 Eo4

X o - - - Eo1 -o X - - - - JKV1X o X o o Eo2 -X o X X o Eo3 -X o X X X Eo4 -o X - - - - JKV2X o - - - Eo1 JKV1X o X o o Eo2 JKV2X o X X o Eo3 JKV2X o X X X Eo4 JKV2o X - - - - JKV3X o - - - Eo1 JKV2X o X o o Eo2 JKV1X o X X o Eo3 JKV1X o X X X Eo4 JKV1o X - - - - JKV4

- = Condition is not examined

X = Condition is realized

Con

trol l

ine

whi

ch m

ust b

e ac

tivat

ed b

y th

e si

gnal

in q

uest

ion

Conditions for activation of the control line

Distant signal in advance of the signal

in question can display aspects

Aspe

ct d

ispl

ayed

by

the

dist

ant s

igna

l in

adv

ance

of t

he s

igna

l in

ques

tion

Activ

e co

ntro

l lin

e at

the

sign

al in

ad

vanc

e of

the

sign

al in

que

stio

nSignal in advance of the signal in question

Sep

arat

e di

stan

t sig

nal o

r a

com

bina

tion

of m

ain

and

dist

ant s

igna

ls

Sepa

rate

mai

n si

gnal

JKV4

JKV3

JKV2

JKV1

o = Condition is not realized



Eo1

Eo1, Eo2, Eo3 or Eo4

Po1, Po2, Po3 or Po4

JKV1



JKV1

Eo2/Eo3/Eo4



JKV2



JKV2

Eo2/Eo3/Eo4



JKV3

JKV1

Eo1

JKV2Eo2/Eo3/Eo4



JKV3

JKV1

Eo1

JKV2Eo2/Eo3/Eo4



JKV4

JKV2

Eo1

JKV1Eo2/Eo3/Eo4



JKV4

JKV2

Eo1

JKV1Eo2/Eo3/Eo4

Eo1

Tag Eo2/Eo3/Eo4 indicates:• Eo2, if aspect Eo2 is determined for the signal, but aspects Eo3 and Eo4 are not determined for the signal• Eo3, if aspects Eo2 and Eo3 are determined for the signal, but aspect Eo4 is not determined for the signal• Eo4, if aspects Eo2, Eo3 and Eo4 are determined for the signal

Figure 19. ATP control lines, encoder interface



Eo1


JKV1


JKV1

Eo2/Eo3/Eo4


JKV2


JKV2

Eo2/Eo3/Eo4


JKV3

JKV1

Eo1

JKV2

Eo2/Eo3/Eo4


JKV3

JKV1

Eo1

JKV2

Eo2/Eo3/Eo4


JKV4

JKV2

Eo1

JKV1

Eo2/Eo3/Eo4


JKV4

JKV2

Eo1

JKV1

Eo2/Eo3/Eo4

Eo1

Tag Eo2/Eo3/Eo4 indicates:• Eo2, if aspect Eo2 is determined for the signal, but aspects Eo3 and Eo4 are not determined for the signal• Eo3, if aspects Eo2 and Eo3 are determined for the signal, but aspect Eo4 is not determined for the signal• Eo4, if aspects Eo2, Eo3 and Eo4 are determined for the signal



JKV2

JKV2


JKV3


JKV4

JKV1

JKV3

JKV4

JKV1

* = projecting case

Po1, Po2, Po3 or Po4*




*

Figure 20. ATP control lines, encoder interface. Functions in the case of a separate main signal.



7 Management of the failure situations of the control lines If a control line (JKV-Po1, JKV-Po3, JKV-Po4, JKV-Eo1, JKV-Eo3 or JKV-Eo4) connected with a drive permitting aspect of a signal, which should be active, is not activated, the signal in question must be controlled to display 'Stop' aspect (main route entry signal) or 'Expect stop' aspect (signal acting only as distant signal). If a control line (JKV0 - JJKV9) associated with a signal, which should be active. is not activated, an indication of the situation must be given to the dispatcher. A signal must be controlled to display 'Stop' aspect (main route entry signal) or 'Expect stop' aspect (signal acting only as distant signal), if a control line associated with the signal in question, which should be passive, is active e.g. because of a strange voltage intruded in the circuit of the control line. If there is a failure in the control line for point position, an indicsation of the situation must be given to the dispatcher.

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