Pelco CM9760-ALM Alarm Interface Unit · PDF filePelco • 3500 Pelco Way • Clovis, CA...

Pelco • 3500 Pelco Way • Clovis, CA 93612-5699 USA • www.pelco.com

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International Customers: Tel (1-559) 292-1981 or FAX (1-559) 348-1120

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CM9760-ALMAlarm Interface Unit

Installation/Operation Manual

C572M (7/98)

2 Pelco Manual C572M (7/98)

CONTENTS

Section Page

1.0 GENERAL ..................................................................................................51.1 IMPORTANT SAFEGUARDS AND WARNINGS ............................... 51.2 REGULATORY NOTICES..................................................................5

2.0 DESCRIPTION ..........................................................................................62.1 MODELS ............................................................................................62.2 CERTIFICATIONS .............................................................................6

3.0 PRE-INSTALLATION INFORMATION .......................................................73.1 FRONT VIEW ....................................................................................7

3.1.1 DIP Switches ...........................................................................8 3.1.1.1 DIP Switch 1 ............................................................. 8 3.1.1.2 DIP Switch 2 ............................................................. 9

3.1.2 LEDs .......................................................................................93.2 REAR VIEW ...................................................................................... 10

3.2.1 Input Alarm Connectors ......................................................... 113.2.2 Relay Output Connector ........................................................ 123.2.3 Communication Connectors .................................................. 13

3.2.3.1 DB-9 RS-232 Connector Pin-outs ............................ 13 3.2.3.2 RJ-45 Connector Geometry ..................................... 14

3.2.4 Power Connections ................................................................ 15

4.0 INSTALLATION ......................................................................................... 164.1 DIRECT RACK-MOUNT HOOK-UP ................................................. 164.2 REMOTE OPERATION..................................................................... 164.3 DAISY-CHAINING ............................................................................. 174.4 ALARM WIRING ............................................................................... 18

4.4.1 Unsupervised vs. Supervised Modes .................................... 18 4.4.1.1 Supervised Alarm Input Configuration and Wiring ... 19 4.4.1.2 Unsupervised Alarm Input Configuration and Wiring .. 20 4.4.1.3 Supervised/Unsupervised Analog (TTL/CMOS) External Alarm Wiring .............................................. 20

5.0 OPERATIONAL OVERVIEW .................................................................... 225.1 FUNCTIONAL BLOCK DIAGRAM .................................................... 23

5.1.2 Power Up & Initialization ........................................................ 235.2 SOFTWARE FUNCTIONS ................................................................ 235.3 COMMAND STRUCTURES ............................................................. 23

5.3.1 Command Set ........................................................................ 245.3.2 Other Communication Features ............................................. 25

5.3.2.1 Communication Loss Reporting ............................... 25 5.3.2.2 Termination Switch Enable ...................................... 26

5.4 INSTALLATION QUICK-CHECK, DO’S AND DON’TS ..................... 26

6.0 SPECIFICATIONS .................................................................................... 27

7.0 WARRANTY AND RETURN INFORMATION ........................................... 28

Pelco Manual C572M (7/98) 3

REVISION HISTORY

Manual # Date Comments

C572M 4/98 Original version.

C572M 7/98 Revised to include agency compliance certificationinformation, Sections 1.2 and 2.2. Revised dimensionsin Figures 13 and 20.

LIST OF ILLUSTRATIONS

Figure Page

1 Front View of CM9760-ALM............................................................... 72 Front Panel Removal .........................................................................73 DIP Switch Location ...........................................................................84 DIP Switch 1 Functions ......................................................................85 DIP Switch 2 Functions ......................................................................96 Rear View of CM9760-ALM .............................................................. 107 Alarm Input Headers ......................................................................... 118 Relay Output Connector ................................................................... 129 DB-9 Pin-outs ................................................................................... 1310 RJ-45 Pin-outs .................................................................................. 1411 RJ-45 Connector Pin-out Geometry ................................................. 1412 Power Input Fuse Replacement ....................................................... 1513 CM9760-ALM Rack-Mount Installation ............................................. 1614 Daisy-Chain Configuration ................................................................ 1715 Supervised Alarm Input Wiring ......................................................... 1916 Unsupervised Alarm Input Wiring ..................................................... 2017 TTL/CMOS External Alarm Wiring .................................................... 2118 Alarm Unit Block Diagram ................................................................. 2219 Communication Loss Operation ....................................................... 2520 CM9760-ALM Dimension Diagram ................................................... 27

LIST OF TABLES

Table Page

A Command Set ................................................................................... 24


(This page intentionally left blank.)


1.0 GENERAL

1.1 IMPORTANT SAFEGUARDS AND WARNINGS

Prior to installation and use of this product, the following WARNINGS should beobserved.

1. Installation and servicing should only be done by qualified service personneland conform to all local codes.

2. Unless the unit is specifically marked as a NEMA Type 3, 3R, 3S, 4, 4X,6, or6P enclosure, it is designed for Indoor use only and it must not be installedwhere exposed to rain and moisture.

3. Only use replacement parts recommended by Pelco.

4. After replacement/repair of this unit’s electrical components, conduct a resis-tance measurement between line and exposed parts to verify the exposedparts have not been connected to line circuitry.

The product and/or manual may bear the following marks:

This symbol indicates that dangerous voltage constituting arisk of electric shock is present within this unit.

This symbol indicates that there are important operating andmaintenance instructions in the literature accompanying this unit.

CAUTION:RISK OF

ELECTRIC SHOCK.DO NOT OPEN.

CAUTION:TO REDUCE THE RISK OF ELECTRICAL SHOCK,

DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING

TO QUALIFIED SERVICE PERSONNEL.

1.2 REGULATORY NOTICES

NOTE: This equipment has been tested and found to comply with the limits of aClass B digital device, pursuant to part 15 of the FCC rules. These limits are de-signed to provide reasonable protection against harmful interference in a residen-tial installation. This equipment generates, uses, and can radiate radio frequencyenergy and, if not installed and used in accordance with the instructions, may causeharmful interference to radio communications. However there is no guarantee thatthe interference will not occur in a particular installation. If this equipment doescause harmful interference to radio or television reception, which can be deter-mined by turning the equipment off and on, the user is encouraged to try and cor-rect the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to whichthe receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Please thoroughly famil-iarize yourself with the in-formation in this manualprior to installation andoperation.


2.0 DESCRIPTION

The CM9760-ALM is another ancillary product belonging to the CM9760 familyof large matrix switching configurations. The ALM unit utilizes an RS-232/422communication interface with the CM9760 system controller and replaces theCM9750-AL1, CM9750-AL1-X, CM9750-AL2 and the CM9750-AL2-X. The unitcan be remotely placed with respect to the controller, from where it can commu-nicate back to the central system when an alarm occurs.

Some of the more important features of the alarm unit are as follows:

• Each unit can handle up to 64 alarms.

• Up to four units can be chained together giving a total of 256 alarms, ac-cessed and supported from a single sercom port on the CM9760-CC1.

• Alarm inputs can be configured in groups of 16 for supervised or non-supervisedmode.

• Alarm inputs, in groups of 16, can be wired either normally open or normallyclosed.

• The unit is backward compatible with the CM9750 system unit (version 5.4and later).

• There is one relay output per unit.

• The unit is powered by an auto-ranging power supply.

• Provisions are made for detecting communication loss for cascaded units.

2.1 MODELS

CM9760-ALM The CM9760-ALM is an alarm unit capable of handling up to 64alarm inputs. Units may be cascaded (up to four) to accommo-date a total of 256 alarm inputs. (CE)

2.2 CERTIFICATIONS

The products identified below have been tested and certified for agency compli-ance as noted.

Applicable CE, FCC, UL, and CSA/cUL directives/standards:

• 93/68/EEC–CE Mark Directive89/336/EEC, 92/31/EEC–Electromagnetic Compatibility (EMC) Directives

EN 55022: 1984 Class B–Radio-frequency emissions limitsEN 50082-2: 1992–Immunity standard

IEC 801-2: 1984–ESD immunityIEC 801-3: 1984–Radiated field immunityIEC 801-4: 1988–Electrical transients

73/23/EEC–Low Voltage Directive (LVD)EN 60950–Safety of Information Technology Equipment

• FCC–47 CFR, Part 15, Subpart B, Class B

Additional applicable standards:

• NEMA Type 1• IP 30

Agency Compliance Certification

Model CE FCC UL CSA/cUL

CM9760-ALM X X


3.0 PRE-INSTALLATION INFORMATION

3.1 FRONT VIEW

Figure 1 illustrates the front view of the unit. Power and alarm LEDs occupy oppo-site ends of the front panel–the green power LED on the left and the red Alarm LEDon the right. All other connectors, switches, inputs and outputs are on the rear of theunit except for two DIP switches and a reset switch located behind the front panelcover plate.

The DIP switches can be accessed easily by removing the five flat-head Phillipsscrews that hold the front panel in place as illustrated in Figure 2.

Figure 1. Front View of CM9760-ALM

Figure 2. Front Panel Removal


3.1.1 DIP Switches

With the front panel removed, DIP switch 1 and DIP switch 2 are visible. These twoten-position DIP switches configure and define the operation of the CM9760-ALM.

3.1.1.1 DIP Switch 1

Refer to Figure 3 to locate DIP switch 1, then refer to Figure 4, which lists thefunction of each slide switch position on DIP switch 1 and also illustrates its defaultfactory setting.

Figure 4. DIP Switch 1 Functions

Figure 3. DIP Switch Location

1 - 64 OFF OFF65 - 128 ON OFF

129 -192 OFF ON193 - 256 ON ON

GROUP IGROUP IIGROUP IIIGROUP IV

2400 OFF OFF4800 ON OFF9600 OFF ON19200 ON ON

2400 OFF OFF4800 ON OFF9600 OFF ON19200 ON ON

PORT 0 = CONNECTORSUNDER UART 0’s INFLUENCE(REFER TO BLOCK DIAGRAM, FIGURE 18)

PORT 1 = CONNECTORSUNDER UART 1’s INFLUENCE(REFER TO BLOCK DIAGRAM,FIGURE 18)

ON=LOOKS FORCOMMUNICATION LOSSADDRESS

SELECTBY

GROUP

PORT 0 (P1/P2)P1=DB-9, RS-232 CONNECTORP2=RJ-45 IN CONNECTOR(ACTIVE PORT DETERMINEDBY SETTING OF S7)


3.1.1.2 DIP Switch 2

If needed, refer to Figure 3 to locate DIP switch 2 and then refer to Figure 5 for anexplanation of the functions of each slide switch position. DIP switch 2 defines thetype of alarm input for each group of 16 alarms (each ALM unit contains a of total of64 alarm inputs, divided into four groups). Refer to Section 3.2.1, INPUT ALARMCONNECTORS.

3.1.2 LEDs

The green POWER LED located on the left front panel of the unit comes ON atpower up.

The red ALARM LED located on the right side of the front panel of the unit is lit forany valid alarm condition and flashes ON and OFF at about 1/4 second intervalsuntil the alarm is no longer active. The ALARM LED follows ALARM OUT relayactivation.

Figure 5. DIP Switch 2 Functions


3.2 REAR VIEW

The rear view of the unit is illustrated in Figure 6. From left to right are the following:

1. The four 16-input groupings of input alarm connectors in the form of screw-type connectors labelled I, II, III and IV

2. The alarm output relay (one per unit)

3. RS-422 input/output communication connectors (RJ-45 type)

3. One RS-232 communication interface connector (DB-9 type)

4. A power-on LED (functionally a mirror of the one existing on the front panel)located just to the left of the input power terminals and above the RS-232connector

5. The grouped input power functions consisting of the input power terminals, afuse, and an ON/OFF switch

Figure 6. Rear View of CM9760-ALM

SEE FIGURE 7


3.2.1 Input Alarm Connectors

Physically, each of the four alarm input connectors consists of the same number ofinput screw-type terminals. Each input connector is a dual-row header, with appro-priate removable input mating plugs (refer to Figure 6 and Figure 7). Each dual-header position is associated with one of four groupings of alarm inputs, each grouprepresenting 16 alarm inputs.

For example, refer to the left-most dual-header position referenced in Figure 6 andrepresented by Figure 7, which shows alarm inputs 1-16. Of these alarm inputs, 1-8are wired using the top 16 screw terminal positions. Alarm inputs on these headersphysically alternate with their associated GND connection for a total of eight avail-able ALM/GND connections in the top header: that is, pin 1 is alarm input 1 andpin 2 is the GND connection associated with alarm input 1; pin 3 is alarm input 2and pin 4 is alarm input 2’s associated GND connection, and so on. The sameexplanation applies to the lower header except alarm inputs 9-16 are accommo-dated, starting with alarm input 9 which is associated with physical pin 17 on theheader (see Section 4.4, ALARM WIRING).

In a similar manner, the remaining dual-header (upper/lower) combinations accom-modate the three remaining alarm input groups: that is, inputs 17-32 are handled byheader two; inputs 33-48 by header three and inputs 49-64 by header four. Thewiring of alarms is covered in Section 4.4, ALARM WIRING.

NOTE: Incidentally, if only onealarm unit is attached to a CC1,these alarm input numbers (1-64and so on) correspond to the physi-cal alarm input numbers (1-64 andso on) used in the CM9760-MGRAlarm Setup files; however, fromthe user’s point of view (most likelythrough a CM9760-KBD keyboard),alarms functions are called up byreferencing the logical number as-sociated with the alarm input ratherthan the physical number.

Figure 7. Alarm Input Headers


3.2.2 Relay Output Connector

Figure 8 illustrates the relay output connector and its relative port pin assignments.The connector is a three-position modular connector configured as a header/plugpair with screw type contacts similar in operation to the mating connectors justdiscussed for alarm inputs.

Anytime a valid alarm condition is sensed, the alarm unit will activate the relay.

The relay, if activated by a valid alarm condition, will not deactivate until no alarmsare present on the alarm unit associated with that relay. This means that if multiplealarms were activated on a given alarm unit, the relay would remain engaged aslong as any condition which caused any of the alarms remained active.

Figure 8. Relay Output Connector


3.2.3 Communication Connectors

Communication with other units is provided through the three ports on the rear ofthe CM9760-ALM. The processor on board the unit contains two UARTS whichprovide the communication interface for enabling the configuration of the appropri-ate ports to be RS-232 or RS-422. The ports are referenced as serial port 0 andserial port 1 (refer to the functional block diagram in Figure 18). Serial port 1 isassociated with the RJ-45 OUT female connector on the rear of the unit and isalways configured for RS-422. Serial Port 0, on the other hand, is associated witheither the RJ-45 IN female connector or the DB-9 female connector, dependent onthe position of slide switch position 7 on DIP switch 1 located on the front panel ofthe unit (see Section 3.1.1, DIP SWITCHES). The position of the slide switch deter-mines whether port 0 operates in RS-422 or RS-232 mode. If configured for RS-422operation, then the RJ-45 IN connector is active and would allow the ALM unit to beconnected to an appropriate sercom port on the rear of a CM9760-CC1 controller.Configuring Port 0 for RS-232 operation activates the DB-9 connector for RS-232communication to COM 1/COM 2 on the rear of the CM9760-CC1.

In either case, serial port 1, associated with the RJ-45 OUT connector is alwaysconfigured as RS-422 and is used for daisy-chaining subsequent alarm units (seeSection 4.3, DAISY-CHAINING).

Individual connector pin-outs of the communication channels are discussed next.

3.2.3.1 DB-9 RS-232 Connector Pin-outs

The RS-232 DB-9 connector pin-outs are illustrated in Figure 9.

Figure 9. DB-9 Pin-outs


Figure 11. RJ-45 Connector Pin-out Geometry

COMPARED “COLOR RUN” IS IN SAME DIRECTION COMPARED “COLOR RUN” IS IN OPPOSITE DIRECTION

BROWN BROWN

STRAIGHT CABLEOR PARALLEL

BROWN BROWN

FLIPPED CABLEORREVERSE CABLE

TO IDENTIFY A CABLETYPE, PHYSICALLYORIENT THE RJ-45CABLE AS DEPICTEDIN THE ILLUSTRATIONS.ORIENT THE CONNECTORSSIDE BY SIDE. TABSIDE DOWN. USETHE “COLOR RUN”OF THE WIRES TO DETERMINE CABLETYPE AND USE THECABLE TYPEAPPROPRIATE TO THE SITUATION.

Figure 10. RJ-45 Pin-outs

TO INTERFACE THE ALARM UNIT TO ANY SERCOM PORT ONTHE REAR OF THE CM9760-CC1 OR BETWEEN ONE ALARM UNIT

AND ANOTHER, FOLLOW THE TABLE BELOW:RJ-45 COMMUNICATIONCONNECTORS

IN – INPUT FROM CM9760-CC1OUT – USED FOR CABLING

SUBSEQUENT UNITS

3.2.3.2 RJ-45 Connector Geometry

The RJ-45 connector pin-outs are illustrated in Figure 10.

Because the pin-out configurations of the RJ-45 connectors used to connect cas-caded units together as well as the unit connected directly to the CC1 are exactlythe same, it requires the use of a “flipped” cable; that is, pin 1 of the cable on oneend becomes pin 8 on the other end between the two pieces of equipment thecable interfaces. Refer to Figure 11 for a method of checking whether or not youhave a “flipped” cable.

Note that the active pin-outs are associated with the outer four pins; namely, 1, 2, 7and 8. All accessories on the System 9760™ require the “flipped” cable to be usedto attach peripheral equipment. This presently pertains to the KBD, MXB, CXT andnow the ALM unit.


Figure 12. Power Input Fuse Replacement

3.2.4 Power Connections

The CM9760-ALM utilizes an input power, auto-ranging supply from 100-240 VAC at50/60Hz. Input power in the range specified applied to the input terminals is actedupon by input circuitry to yield a lower rectified voltage which is applied to a +5Vswitching power supply. Associated with the input power is the power ON/OFF switchand the input power fuse. The fuse is easily changed as illustrated in Figure 12.


4.0 INSTALLATION

Physical installation of the alarm unit is relatively simple, although various configu-rations are possible.

4.1 DIRECT RACK-MOUNT HOOK-UP

Regardless of the location of an alarm unit, it will more than likely be installed in arack (refer to Figure 13). The alarm unit mounts in a standard 19-inch (48.3 cm) rackand occupies only 1 RU (1.75" or 4.45 cm) of rack space. If the unit’s location isnear the controller, you can option port 0 control for DB-9, RS-232 operation, ifdesired. RS-232 operational mode, however, should be used only for distances 50feet or less from the controller.

4.2 REMOTE OPERATION

Even though the unit may or may not be installed in a rack, it might be desirablefor the unit to be placed some distance from the controller (CM9760-CC1) in whichcase the wiring run from the CC1 to the RJ-45 IN port should not exceed 4,000feet. In this case, of course, serial port 0 should be configured for RS-422 com-munication.

Figure 13. CM9760-ALM Rack-Mount Installation

STANDARD 19" (48.3 CM) RACK MOUNT


4.3 DAISY-CHAINING

Daisy-chain configurations may be invoked whether alarm units are situated lo-cally, remotely or as a combination of the two. In any case, no more than four alarmunits can be chained together. To accomplish this, the first unit is connected from itsIN connector to the CC1 and connected to the second unit through its OUT connec-tor. Subsequent units are chained together in the same way.

Figure 14 depicts the connection of four cascaded units. Note that the remarksmade in the previous section regarding RS-422 wiring run distances are applicablehere when considering cables distance runs between daisy-chained units.

Figure 14. Daisy-Chain Configuration

TERMINATION BIT SET(SEE SECTION 5.3.2.2,

TERMINATION SWITCH ENABLE)

SWAPPED OR REVERSE CABLES(REFER TO SECTION 3.2.3.2, RJ-45 CONNECTOR GEOMETRY)

UNIT 1CM9760-ALM

UNIT 2CM9760-ALM

UNIT 3CM9760-ALM

UNIT 4CM9760-ALM

NOTE: IF COMMUNICATION FAILURE REPORT MODE IS OPTIONED IN UNITS 1-3,THE 64TH INPUT CANNOT BE USED AS AN ALARM INPUT (REFER TOSECTION 5.3.2.1, COMMUNICATION LOSS REPORTING).

IN OUT IN OUT IN OUT IN


4.4 ALARM WIRING

Section 3.2.1 introduced the four dual-header connectors and their positions on therear of the unit where all alarm wiring takes place. Explained there was the locationof alarm inputs with respect to header location and the natural division of eachheader configuration of 64 inputs into four groups of 16 aligned left to right inascending order, 1 through 64, looking from the rear of the unit. In the next fewsections, we discuss each of the four groups of wired alarm inputs and their classi-fication into contact types or modes: either unsupervised (normally open or closed)or supervised. We contrast the differences between supervised and unsupervisedmodes of operation and, finally, we discuss the specifics of how each type, in turn,is wired.

Before we do that, we should emphasize the fact that the operational mode (super-vised or non-supervised) for each 16-input group is determined solely by the slideswitch positions on DIP switch 2 (see Figure 5). It is important to keep this in mindfor the following reasons:

1. Your alarm input wiring must reflect DIP switch 2 slide switch position settingsor vice versa.

2. In supervised mode, alarm inputs must be defined in the system setup file.

3. Integrating supervised and unsupervised wiring modes within the same groupis not allowed and furthermore, in non-supervised mode, you cannot havealarms wired for both normally open and normally closed operation in thesame alarm group.

4. If wiring a group of inputs specified as supervised, no unwired inputs are al-lowed as this would result in a constant alarm condition. Any unused alarmposition should have a 10K resistor wired across its input and associated GNDconnection (refer to the table in Figure 7, and to Figure 15).

5. If wiring an input group specified as unsupervised and normally closed, againno unwired inputs are allowed as this would result in a constant alarm condi-tion on any unused alarm input. Alarm inputs not used should be shorted outbetween the alarm input and its associated GND connection (refer to the tablein Figure 7, and to Figure 16).

4.4.1 Unsupervised vs. Supervised Modes

Supervised wiring configurations were used for alarm inputs on 9750 alarm baysand are also provided in the 9760 alarm unit. The supervised mode exists in the9760 alarm unit for the same reason it existed in the 9750 alarm unit: security.

Supervised input alarm wiring exists for the purpose of defeating attempts to com-promise alarm integrity by tampering with the alarm wiring either by cutting wires orby bypassing or shorting sections of alarm circuitry. Alarm inputs wired in super-vised mode maximize the detection of tampering by driving a current through aconstant load. Any open or shorted condition results in an alarm condition as thevoltage drop across the constant load immediately changes from its steady state.Figures 15 and 16 illustrate the wiring configurations for supervised and unsuper-vised modes, respectively. Pay particular attention to how unused inputs are handled.


4.4.1.1 Supervised Alarm Input Configuration andWiring

As previously mentioned, supervised inputs are terminated, normally with 10K re-sistors. If it is desired for the alarm contacts to be N/O, then the terminating resistoris wired in parallel with the alarm contacts; if it is desired for the alarm contacts tobe N/C, then the terminating resister is wired is series with those contacts.

If we wire the same group of 16 alarm inputs that were discussed in the previoussection, then again, DIP switch 2 defines the mode. In this case, slide switch posi-tion 1 on DIP switch 2 would be left in the OFF position. For supervised modes, theposition of slide switch position 2 is irrelevant. From the ALM unit’s point of view, itdoesn’t know or care whether the alarm input wiring is N/O or N/C–all it’s watchingfor is a deviation from the constant current flow through a 10K load. This will be-come clear in the examples in Figure 15. Note that if someone tries to defeat thesystem by cutting a wire, an alarm condition is created.

Figure 15. Supervised Alarm Input Wiring

INDIVIDUAL ALARM WIRING CONDITIONSSWITCH SETTINGS

DO NOTCARE ABOUTTHESESWITCHPOSITIONSWHEN INSUPERVISEDMODE

DIP SWITCH 2

ON

OFFS1/S2

GROUP1-16

S3/S4GROUP17-32

S5/S6GROUP33-48

S7/S8GROUP49-64

S2 S2 S3 S4 S5 S6 S7 S8NOT USED


4.4.1.2 Unsupervised Alarm Input Configuration andWiring

Unsupervised relay contacts are not terminated and are wired either as normallyopen or as normally closed. If it is desired, for example, to condition the first groupof 16 alarms inputs on an alarm unit for unsupervised mode, then slide switchposition 1 on DIP switch 2 should be OFF. You can then further define the contactwiring for the inputs of the entire group as being N/O or N/C by the position of slideswitch position 2 on DIP switch 2. If the slide switch is OFF, the wiring for the inputgroup is N/O; if ON, it is N/C.

Unsupervised modes are easily defeated (as noted by cutting the wire in the nor-mally open condition in Figure 16) and should not be used in critical situationswhere security is of paramount importance.

4.4.1.3 Supervised/Unsupervised Analog(TTL/CMOS) External Alarm Wiring

To wire external alarm inputs using analog TTL/CMOS circuitry rather than relays,Figure 17 gives a good summary of what is required in each case.

Figure 16. Unsupervised Alarm Input Wiring

INDIVIDUAL ALARM WIRING CONDITIONS

SWITCH SETTINGS

SWITCH SETTINGS

IN UNSUPERVISEDMODE, SWITCHPOSITIONS ASSHOWN CONFIGUREINPUT FORNORMALLY CLOSEDPOSITION

DIP SWITCH 2

IN UNSUPERVISEDMODE, SWITCHPOSITIONS ASSHOWN CONFIGUREINPUT FORNORMALLY OPENPOSITION

ON

OFF

ON

OFFS1/S2

GROUP1-16

S3/S4GROUP17-32

S5/S6GROUP33-48

S7/S8GROUP49-64


S1/S2GROUP

1-16

S3/S4GROUP17-32

S5/S6GROUP33-48

S7/S8GROUP49-64



Figure 17. TTL/CMOS External Alarm Wiring

ALARM

ALARM

ALARM

ALARM

ALARM

ALARM


5.0 OPERATIONAL OVERVIEW

The basic function of the alarm unit is to physically monitor all alarm inputs for achange of state. For supervised inputs, the unit monitors each alarm input for aconstant current through the wiring of the alarm circuit. The alarm consists of eithera 10K resistor in series with a normally closed contact or a 10K resistor in parallelwith a normally open contact. For non-supervised modes, the unit monitors eachalarm input for a change of state from that previously defined by DIP switch posi-tions as being N/O or N/C. A change from the defined state (N/O to N/C or N/C toN/O) activates an alarm condition. If only one ALM unit is online when an alarmoccurs, the unit verifies its validity and, if no further restrictions apply, sends theinformation to the CM9760-CC1 via serial port 0 (through either the RS-422 orRS-232 communication path). For cascaded configurations, alarm information ispassed upward to the next contiguous alarm unit. The time required to filter andsubsequently transfer alarm information from a receiving unit to the next unit up-stream is approximately 50 ms.

Figure 18. Alarm Unit Block Diagram

1ST GROUP 2ND GROUP 3RD GROUP 4TH GROUP

ANALOGSWITCH

RJ-45 IN RJ-45 OUT


5.1 FUNCTIONAL BLOCK DIAGRAM

The block diagram below represents a combination of internal circuitry and soft-ware controlled hardware connections within the CM9760-ALM unit. You should beable to relate many of the blocks within this illustration to specific items discussed inthe text.

5.1.2 Power Up & Initialization

On power-up, RAM is cleared and initialization routines are called. The firmwaresets up processor pin configurations, interrupt priorities and other functions basedon switch positions and alarm configurations. In addition, ARM table informationfrom the CC1 is transferred to the alarm units ARM database table, which is asso-ciated with the alarm decision circuitry block in Figure 18.

5.2 SOFTWARE FUNCTIONS

The software (or, if you prefer, firmware) within the alarm unit enables and condi-tions the units initial operation on power up and manages the subsequent “normaloperational mode” of the alarm unit.

Other than initialization, other functions performed by the software in each ALMunit includes but is not limited to the following:

1. Handles the input and output processing of messages to and from the unitand the CC1 as well as handling the communications between itself and otherALM units in cascaded configurations.

2. Monitors alarm inputs for valid alarm conditions.

3. Performs internal diagnostics and housekeeping functions.

5.3 COMMAND STRUCTURES

The impetus for command and data exchange between the CC1 and the ALM unitcan be classified by those actions generated by operator input and those generatedby everything else; namely, the vagaries of the on-board firmware.


COMMAND DIRECTION

1. Send Set Relay On CC1 to ALM unit2. Send Set Relay Off CC1 to ALM unit3. Send Arm Table CC1 to ALM unit4. Arm Table Request ALM unit to CC15. Arm/Disarm Alarm Input CC1 to ALM unit

Table A. Command Set

5.3.1 Command Set

Below is a table listing the “implemented” commands used with the CM9760-ALMunit. Commands 1, 2 and 5 as well as inquiry functions are available to users via theCM9760-KBD. Reference the appropriate sections of the KBD manual for com-mand and inquiry features with respect to alarm functions.

As previously mentioned, ARM table information from the CC1 is transferred to allalarm units and their respective database tables on initial power up of the system.The CC1 automatically sends ARM table information (Send Arm Table command)to the alarm units. If, during normal operation, an alarm unit is turned off, thenturned back on or a new unit is added, for example, to a cascaded configurationand turned on, then the alarm unit itself will issue an ARM request (Arm TableRequest command) from the CC1 when it is powered on.

The ARM table database is an integral part of the software operation of the ALM unit.Essentially, the ARM table contains the programmed sum of all the pre-defined con-ditions that affect the operational relationship between the operator and user of thesystem and the wired alarm inputs to the ALM unit. As a practical matter, though, thecontents and use of the ARM table by the software is transparent to the user. Wemention it here because one of the commands within the command set available toany operator; namely, an “Arm/Disarm Alarm Input” command, which can be sentby an operator to an alarm unit affects the ARM table. Upon receipt of this command,the ALM unit in question acknowledges the command and updates its respectiveARM table database for the affected group of alarms.

The relay commands (Send Set Relay Off and Send Set Relay On) are not actedupon by the alarm unit. Instead, they are acknowledged by the ALM unit and thenessentially thrown away. Relays are programmed to be a relay follow of alarm activa-tion. When any valid alarm is sensed on any alarm unit, the relay on that alarm unitbecomes active and will not go inactive until all alarms on that unit go away. Inaddition, the alarm LED will actively follow the alarm relay and, in an alarm condi-tion, will flash ON and OFF in 1/4-second intervals until the alarm relay deactivates.


5.3.2 Other Communication Features

There are two other built-in command structures that are part of firmware operationthat are important to the functioning of the unit. One of these functions is optionaland the other is required – both are user activated. These two functions are en-abled by DIP switch settings and are discussed in the following two sections.

5.3.2.1 Communication Loss Reporting

You cannot use the 64TH input on an alarm unit as an alarm input if you option theunit for communication loss reporting. To enable this feature, set DIP switch slideposition 9 on DIP switch 1 to the ON position. This means that communicationwith the subsequent alarm unit (downstream) is constantly monitored. If a failure issensed, it is reported that an entire alarm unit has been disconnected. The firm-ware monitors for communication loss as follows (refer to Figure 19):

Step 1. Alarm units A and B in Figure 19 have their communication loss modefunctions enabled. On a periodic basis, the query in the next step occurs.

Step 2. Alarm unit A queries alarm unit B; alarm unit B queries alarm unit C: Areyou there?; unit B acknowledges unit A’s query and, likewise, unit C ac-knowledges unit B’s query with an ACK. As long as acknowledgment tothe query is received, everything is OK. Now, assume the communicationlines between unit B and/or C are cut or disconnected.

Step 3. Unit B, on the first instance of not receiving an ACK back from unit C, willquery unit C two more times. If no ACKs are received, it will report a com-munication loss with alarm unit C by indicating an alarm on unit B’s 64TH

input (ALARM 128).

Figure 19. Communication Loss Operation

��

X

ARE YOU THERE? ARE YOU THERE?

ACK ACK

NORMAL OPERATION

LOSS MODEENABLED

A

LOSS MODEENABLED

B C

LOSS MODEENABLED

A1-64

LOSS MODEENABLED

B65-128

C

ARE YOU THERE?

ARE YOU THERE?

ARE YOU THERE?

B REPORTS ALARM UNIT

C IS DISCONNECTED

ARE YOU THERE?ALARM 128REPORTED(COMMUNICATION LOSS WITHIN UNIT C)

COMMUNICATIONFAILURE BETWEENUNITS B AND C

ACK


5.3.2.2 Termination Switch Enable

During an alarm unit’s normal mode of operation, it expects an acknowledgment toany communication it sends downstream to subsequent units. All units are config-ured by firmware to normally pass on any commands or information it receives tosubsequent units unless the information is for the alarm unit in question. The alarmunit will attempt to do this even if a subsequent alarm unit is not attached. To elimi-nate unnecessary message handling out port 1, the last unit connected in a daisy-chain of alarm units should have its termination bit switch set. The reason is that ifthe termination bit switch is not set in the last unit in line, the alarm unit will do itsnormal thing and query the nonexisting unit two more times, waiting for an acknowl-edgment. This takes valuable processing time for the last unit to “go through themotions” unnecessarily. In the event of excessive traffic between units (more unitsmeans more traffic) this could lengthen the overall response time for the last unitwhen reporting alarms. To eliminate this potential problem, the last unit in any con-figuration (even one unit), should have slide switch position 10 on DIP switch 1 setto the ON position, to enable termination. In fact, this is the default factory settingfor this slide switch position. In full cascaded unit configurations, DIP switch posi-tion 10 on units 1, 2, and 3 should be in the OFF position, while in unit 4 (the lastalarm unit in the chain) it should be in the ON position. This bit should also be ON ifonly one alarm unit is connected to a controller for the reasons just stated.

5.4 INSTALLATION QUICK-CHECK, DO’S AND DON’TS

When installing alarm units, the following items can be referenced as a checklist.The items are listed in the general order that they would be performed, but, ofcourse, the order actually followed is user defined:

1. Define communication modes and run appropriate communication cables, pay-ing attention to cable distance runs.

2. Physically install the affected alarm units (rack-mount, etc.).

3. Wire the external alarms according to your site plan. Pay close attention to thefollowing:

a. Other than the normal wiring of supervised inputs, be sure to wireunused alarm inputs for any group configured as supervised with a 10Kresistor across the alarm and associated ground connection.

b. Be sure to wire unused alarm inputs for any group configured as unsu-pervised and normally closed with a shorting wire between the unusedalarm input and its associated ground connection.

4. Configure your DIP switches for each alarm unit. For cascaded units, remem-ber to set the communication failure slide switch for detecting communicationloss downstream, if desired. Also be sure to set the termination bit for the lastunit in either a chain of units or, in the case of only one alarm unit, consider itthe last unit and activate its termination bit slide switch.


6.0 SPECIFICATIONS

ElectricalInput Voltage: 100-240 VAC, 50/60 Hz, auto-ranging

Power: 30 vA

Data PortsInput: RS-232, DB9 connector

RS-422, RJ-45 connectorOutput: RS-422, RJ-45 connectorIndicators: Two power LEDs, green

One alarm LED, redFusing: 500 mA, 250 V

Relay Out: Load rating for relay contacts:0.50 A at 125 VAC or 1 A at 24 VDC

GeneralDimensions: See Figure 20.

OperatingTemperature: 32° to 122°F (0° to 50°C)

Weight: 7 lb (3.17 kg)

Rating: NEMA 1

MechanicalConnectors: Dual-header, 32 input connectors with mating plugs (4 total)

Power: 3-wire #18 AWGRS-422: RJ-45 (8-way), connectors (2 total)RS-232: DB-9 connectors (1 total)Relay Out: 3-pin header with mating plug (1 total)

(Design and product specifications subject to change without notice.)

Figure 20. CM9760-ALM Dimension Diagram

NOTE: VALUES IN PARENTHESES ARE CENTIMETERS; ALL OTHERS ARE INCHES

19.00 (48.26)

PWR

S Y S T E M 9760

ALARM

CM9760-ALMAlarm Interface Unit

Made in USA

17.40 (44.20)

1.75(4.45)

8.15(20.70)

PRODUCT WARRANTY AND RETURN INFORMATION

WARRANTY

Pelco will repair or replace, without charge, any merchandise proved defective in material orworkmanship

for a period of one year

after the date of shipment.

Exceptions to this warranty are as noted below:

• Five years on FR/FT/FS Series fiber optic products and TW3000 Series unshielded twistedpair transmission products.

• Three years on Genex

®

Series products (multiplexers, server, and keyboard).

• Three years on Camclosure

®

and fixed camera models, except the CC3701H-2,CC3701H-2X, CC3751H-2, CC3651H-2X, MC3651H-2, and MC3651H-2X camera models,which have a five-year warranty.

• Three years on PMCL200/300/400 Series LCD monitors.

• Two years on standard motorized or fixed focal length lenses.

• Two years on Legacy

®

, CM6700/CM6800/CM9700 Series matrix, and DF5/DF8 Seriesfixed dome products.

• Two years on Spectra

®

, Esprit

®

, ExSite

™

, and PS20 scanners, including when used incontinuous motion applications.

• Two years on Esprit

®

and WW5700 Series window wiper (excluding wiper blades).

• Two years (except lamp and color wheel) on Digital Light Processing (DLP

®

) displays.The lamp and color wheel will be covered for a period of 90 days. The air filter is notcovered under warranty.

• Eighteen months on DX Series digital video recorders, NVR300 Series network videorecorders, and Endura

™

Series distributed network-based video products.

• One year (except video heads) on video cassette recorders (VCRs). Video heads will becovered for a period of six months.

• Six months on all pan and tilts, scanners or preset lenses used in continuous motionapplications (that is, preset scan, tour and auto scan modes).

Pelco will warrant all replacement parts and repairs for 90 days from the date of Pelcoshipment. All goods requiring warranty repair shall be sent freight prepaid to Pelco, Clovis,California. Repairs made necessary by reason of misuse, alteration, normal wear, or accidentare not covered under this warranty.

Pelco assumes no risk and shall be subject to no liability for damages or loss resulting fromthe specific use or application made of the Products. Pelco’s liability for any claim, whetherbased on breach of contract, negligence, infringement of any rights of any party or productliability, relating to the Products shall not exceed the price paid by the Dealer to Pelco forsuch Products. In no event will Pelco be liable for any special, incidental or consequentialdamages (including loss of use, loss of profit and claims of third parties) however caused,whether by the negligence of Pelco or otherwise.

The above warranty provides the Dealer with specific legal rights. The Dealer may also haveadditional rights, which are subject to variation from state to state.

If a warranty repair is required, the Dealer must contact Pelco at (800) 289-9100 or(559) 292-1981 to obtain a Repair Authorization number (RA), and provide the followinginformation:1. Model and serial number2. Date of shipment, P.O. number, Sales Order number, or Pelco invoice number3. Details of the defect or problem

If there is a dispute regarding the warranty of a product which does not fall under thewarranty conditions stated above, please include a written explanation with the productwhen returned.

Method of return shipment shall be the same or equal to the method by which the item wasreceived by Pelco.

RETURNS

In order to expedite parts returned to the factory for repair or credit, please call the factory at(800) 289-9100 or (559) 292-1981 to obtain an authorization number (CA number if returnedfor credit, and RA number if returned for repair).

All merchandise returned for credit may be subject to a 20% restocking and refurbishingcharge.

Goods returned for repair or credit should be clearly identified with the assigned CA or RAnumber and freight should be prepaid. Ship to the appropriate address below.

If you are located within the continental U.S., Alaska, Hawaii or Puerto Rico, send goods to:

Service DepartmentPelco3500 Pelco WayClovis, CA 93612-5699

If you are located outside the continental U.S., Alaska, Hawaii or Puerto Rico and areinstructed to return goods to the USA, you may do one of the following:

If the goods are to be sent by a COURIER SERVICE, send the goods to:Pelco3500 Pelco WayClovis, CA 93612-5699 USA

If the goods are to be sent by a FREIGHT FORWARDER, send the goods to:Pelco c/o Expeditors473 Eccles AvenueSouth San Francisco, CA 94080 USAPhone: 650-737-1700Fax: 650-737-0933

The materials used in the manufacture of this document and its components are compliant to the requirements of Directive 2002/95/EC.

This equipment contains electrical or electronic components that must be recycled properly to comply with Directive 2002/96/EC of the European Union regarding the disposal of waste electrical and electronic equipment (WEEE). Contact your local dealer for procedures for recycling this equipment.

Pelco, the Pelco logo, Camclosure, Esprit, Genex, Legacy, and Spectra are registered trademarks of Pelco. ©Copyright 2006, Pelco. All rights reserved.Endura and ExSite are trademarks of Pelco.DLP is a registered trademark of Texas Instruments, Inc.

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