Pittway NOTIFIER LDM Series User manual

Document15885
10/29/97 Rev: F
P/N15885:F2 ECN97-407
12 Clintonville Road
Northford, CT 06472
[phone]
FAX: [phone]
LDM Series
Lamp Driver Modules
For Graphic Annunciation and Control
Used with the System 500, System 5000,
AM2020/AFP1010 and AFP-200
Fire Alarm Control Panels
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215885 Rev. F1 8/2/95 P/N 15885:F1
INSTALLATIONWARNING
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15885 Rev. F1 8/2/95 P/N 15885:F1 3
Table of Contents
Section One: Introduction to the LDM Series 5
SectionTwo: LDM Features 6
2.1 The LDM-32 6
Figure 2-1: LDM-32 6
2.2 The LDM-E32 7
Figure 2-2: LDM-E32 7
2.3 Connectors on the LDM-32 and LDM-E32 8
2.4 Switches 9
2.5 Terminal Blocks 9
2.6 Cables 10
2.7 The LDM-R32 11
Figure 2-3: LDM-R32 11
SectionThree: Installation 12
3.1 External Cabinets 12
3.2 CHS-4L Chassis 12
Figure 3-1: CHS-4L Mounting 12
Figure 3-2: Installing LDM Modules in CHS-4L 13
Figure 3-3: LDMs Mounted in UL Listed Cab 13
Figure 3-4: Mounting Optional LDM-R32 Relay Mod. 14
Section Four: Wiring Considerations 15
4.1 Limits 15
4.2 Wire Runs 15
Figure 4-1: EIA-485 Communications 15
4.3 Wiring Specifications 15
Figure 4-2: Wiring the Enclosure 16
4.4 EIA-485 Shield in Conduit 16
Figure 4-3: Terminating the Shield - Conduit 16
4.5 EIA-485 Shield Not in Conduit 16
Figure 4-4:Terminating the Shield - No Conduit 16
4.6 EIA-485, Power and Relay Wiring 17
Figure 4-5: Wiring Multiple LDMs (6000 ft. max..) 17
Figure 4-6: Wiring Supervision Terminals 17
UL Power Limited Wiring Requirements 18
4.7 Remote Power Supply Connector 19
Figure 4-7: Remote Power Supply Connections 19
4.8 Lamp/LED Wiring 20
Figure 4-8:Typical LDM-to-Graphics @ 5 VDC 20
Figure 4-9:Typical LDM-to-Graphics @ 24 VDC 20
4.9 Control Switch Wiring 21
Figure 4-10: Optional Zone/Pt. Control Switch Wire 21
Section Five: Summary - Installing the Lamp Driver Module 22
Section Six: Operating the Lamp Driver Module 24
6.1 Lamp Test/Acknowledge 24
6.2 On Line LED 24
6.3 Graphic Annunciator Lamp/LED 24
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415885 Rev. F1 8/2/95 P/N 15885:F1
Section Seven: LDM Communications 25
Figure 7-1: LDM-32 Supervision 25
Section Eight: LDM Electrical Ratings & Current Calculations 26
Appendix A: LDM and the System 5000 29
Table A-1: Annunciator Point Assignments 30
AIM-200 Point Assignments 31
Table A-2: LDM Switch Control Functions 32
Figure A-1: Alarm Only Operation w/o 8-Point Shift 33
Figure A-2: Alarm Only Operation with 8-Point Shift 34
Figure A-3: Alarm/Trouble Op. w/o 8-Point Shift 35
Figure A-4: Alarm/Trouble Op. with 8-Point Shift 36
Figure A-5: Alarm Relays with LDM-R32 37
Figure A-6: Alarm Relays with 8-Point Shift 38
Figure A-7: Alarm & Trbl Relays with LDM-R32 39
Figure A-8: Alarm & Trbl Relays with 8-Point Shift 40
Appendix B: LDM and the AM2020/AFP1010 41
Figure B-1: The EIA-485 Loop 42
Table B-1: Lamp Driver Point Functions 43
Figure B-2: Lamp Driver Alarm Points 45
Figure B-3: Alarm and Trouble Points 46
Figure B-4: Alarm-Only Relay Operation 47
Figure B-5: Alarm & Trbl Relay Operation 48
Appendix C: LDM and the System 500 49
Figure C-1: Connecting the EIA-485 Loop 49
Table C-1: Annunciator Point Assignments 51
Table C-2: LDM Switch Control Functions 52
Figure C-2: Alarm Points Only Operation 52
Figure C-3: Alarm Only Operation with CPU Shift 53
Figure C-4: Alarm and Trouble Points Operation 53
Figure C-5: Alarm/Trouble Operation with 8-Pt Shift 54
Figure C-6: Alarm Relays with LDM-R32 54
Figure C-7: Alarm Relays with 8-Point Shift 55
Figure C-8: Alarm and Trouble Relay with LDM-R32 56
Figure C-9: Alarm & Trbl Relays with 8-Point Shift 57
Appendix D: LDM and the AFP-200 58
Table D-1: LDM Switch Control Functions 60
Figure D-1: Display Active Status of Software Zones 61
Figure D-2: Active Status of Zones with 8-Pt Shft 62
Figure D-3: Activation and Trbl Status Annunciation 63
Figure D-4: Activation Operation with 8-Pt Shift 64
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15885 Rev. F1 8/2/95 P/N 15885:F1 5
Section One: Introduction to the LDM Series
The LDM Series Lamp Driver Modules, which consist of the LDM-32 master and LDM-E32
expander modules, are used to provide an interface to a custom graphic annunciator. The
master module provides power and control for a maximum of three expander modules.
The LDM-32 and LDM-E32 have output connectors which are used to drive lamps or LEDs
and input connectors which are used for remote switch functions.
The LDM Series Lamp Driver Modules may be connected to fire alarm control panels
(FACP) to provide remote annunciation of the following:
• General system status:
ü General Alarm
ü General Trouble
ü General supervisory
ü Notification Appliance Circuit (NAC) output status
ü Municipal tie status
ü System silence
ü Alarm relay status
• Alarm and trouble status of zones or individual points
• Alarm only status of zones or individual points
The LDM Series Modules also interface to remote control switches which may be used to
provide:
• System reset
• System silence
• System acknowledge
• Temporary activation of NAC outputs
• Alarm relay activation
• Other control functions
The LDM Series Modules interface to the host fire alarm control panel via an EIA-485
communications bus circuit. A maximum of 32 LDM-32s may be connected to the power-
limited EIA-485 bus, but if other types of devices are also connected to the EIA-485 bus,
the maximum number of LDM-32s must be reduced by the total of such devices. The EIA-
485 wiring distance must not exceed 6,000 feet and cannot be T-tapped. Multiple LDM-
32s may be used to annunciate duplicate information.
Power to the LDM-32s is typically provided by the host FACP and must be power-limited
regulated 24 VDC. External UL listed battery backed power supplies may also be used.
Careful consideration must be given to system battery calculations when power for the
LDM modules and lamps or LEDs is provided by the host FACP . Refer to the specifications
in the appropriate FACP technical manual when making these calculations.
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615885 Rev. F1 8/2/95 P/N 15885:F1
SectionTwo: LDM Features
2.1The LDM-32
The Lamp Driver Module LDM-32 has 32 alarm lamp/LED driver outputs which sink current
to system common (-) on activation. A single positive (+) voltage is required to supply total
operating power for all lamps or LEDs when all drivers are activated. The LDM-32 provides
a separate driver for system trouble and inputs for a local lamp test switch. A maximum of
16 external control switches may be wired to the LDM-32. DIP switch SW3 is used to enable
or disable the onboard piezo, enable remote switch functions, select a flashing LED function
for new alarms and troubles, and other functions. Switch SW4 is used to configure the
module to annunciate 32 alarms or 16 troubles. A green ON LINE LED flashes to indicate
ongoing communications with the host FACP. One LDM-32 supports up to 3 LDM-E32
modules. The LDM-32 is supplied with 4 standoffs and screws for mounting to a CHS-4L
chassis or custom backbox.
Figure 2-1: LDM-32
Lamp Power (+24VDC)
SystemTrouble
Ribbon Cable
Connectionto
LDM-E32
OutputConnectors
for Wiring to LEDs
Security Key
SwitchTerminal
Terminal for max.
of 16 external
controlswitches
Address
Switches
LDMProgram
Switch
IndicatesEIA-485
CommunicationActive
Alarm or
Alarm/Trbl
EIA-485 In (-)
EIA-485 Out (-)
EIA-485 Out (+)
EIA-485 In (+)
Supervision
Inputs (NC)
Common In (-)
Common Out (-)
Power In +24VDC
Power Out +24VDC
Earth Ground
Power-
limited
Relay Power Ribbon
CableConnection
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15885 Rev. F1 8/2/95 P/N 15885:F1 7
2.2The LDM-E32
Each LDM-E32 expander module provides 32 additional lamp/LED driver outputs from J5,
J6, J7 and J8. The expander module has a slide switch SW4 for selecting alarm or alarm
and trouble annunciation and an input for a local lamp test switch. In alarm mode, use only
one LDM-32 and one LDM-E32 for a maximum of 56 alarm indicators and 8 system status
indicators. In alarm/trouble mode, use one LDM-32 and three LDM-E32s for a maximum of
56 alarm indicators, 56 trouble indicators, 16 status indicators and 64 optional control switch
inputs. Multiple sets of LDM-32s with LDM-E32 expanders increasethe systemannunciation
capabilities beyond 56 zones or points. This is possible by various settings of address
switches SW1 and SW2 on the LDM-32 (refer to Appendices). Each LDM-E32 is supplied
with a 26 conductor expander ribbon cable, 4 standoffs and 4 screws.
Figure 2-2: LDM-E32
Ribbon Cable
Connectionsto
Next LDM-E32
Ribbon Cable
ConnectionFrom
Previous LDM-32 or
LDM-E32
OutputConnectors
for Wiring to LEDs
Security Key
SwitchTerminal
Terminal Formax.
of 16 External
Control Switches
Alarm Only or
Alarm/Trouble
Select Switch
Relay Power Ribbon
CableConnection
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815885 Rev. F1 8/2/95 P/N 15885:F1
2.3 Connectors on the LDM-32 and LDM-E32
J1 - Switch Matrix
Up to 16 optional external control switches and a local lamp test switch may be attached
to the LDM-32 and LDM-E32 via J1 as shown in Figure 4-10. To determine which switch
function each point will perform in a System 5000, refer to Appendix table A-1 (System
5000). Switch functions on an AM2020/AFP1010 are completely programmable.
J2 - Ribbon Cable Connection Between Master and Expander Modules to J3
A single 26 conductor ribbon cable may be connected from J2 on the LDM-32 or LDM-
E32 (see Figure 3-3) to J3 on adjacent LDM-E32s. The ribbon cable carries power,
ground and signaling from the LDM-32 to up to three LDM-E32s. The preformed cables
are supplied in fixed lengths of 24 and 48 inches.
J3 - Ribbon Cable Connection From J2
This connector supports a single 26 conductor ribbon cable from J2 of the previous
LDM-32 or LDM-E32. Refer to Figure 3-3.
J4 - Keyswitch Input
This two pin connector is provided as an input on LDM-32 and LDM-E32 modules for an
external security keyswitch. KeyswitchcontactsmustbeNormally Closed. The keyswitch
prevents unauthorized use of remote control switches wired to J1.
J5, J6, J7 and J8 - Lamp/LED Driver Outputs
Each connector provides 8 driver outputs for a total of 32 drivers on each LDM-32 and
LDM-E32. Each driver is rated for a maximum of 30 volts and a current of 100 mA. Each
bipolar Darlington open collector driver output must be current limited by an external
resistor. 8-Point Shift and Flash functions are selectable by DIP switch SW3 (refer to
Section 2.4). Lamp/LEDs may function in 'alarm only mode' or 'alarm/trouble mode' as
selected byswitch SW4. Use the charts and examples shown in Appendices A and B for
additional information.
J9 - Lamp Power/SystemTrouble
Connector J9 is located only on the LDM-32. J9 pin 1 provides 24 volts regulated power
to all lamps/LEDs used in a custom graphic annunciator. The current limit of J9 pin 1 is
dependent upon the current limits of the external power source being used. J9 pin 3 is
a driver output for system trouble indication only. J9 pin 2 connects to system common.
J10 - Relay Expander
Cables to the optional LDM-R32 Relay Expander Module which can be used to provide
up to 32 dry Form-A (normally open) contacts.
J11 - 5VDC Power
This connector is located only on the LDM-32. J11 pin 1 provides 5 volts regulated
power to all lamps/LEDs used in a custom graphic annunciator. The maximum current
available from this output is 300 mA. This current is sufficient to power the maximum
number of LEDs available with one LDM-32 and three LDM-E32s (from J5, J6, J7, J8
and one system trouble LED)
provided the current rating per LED is 2 mA.
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15885 Rev. F1 8/2/95 P/N 15885:F1 9
2.4 Switches
SW1 and SW2 - Address Switches
Two rotary BCD switches, located only on the LDM-32, are used to set the LDM Series
system address. Switch SW1 represents the 'ones' position and switch SW2 represents
the 'tens' position of the address setting. In system configurations of 56 zones or less,
the switches must be set to address 01 for all LDMs in the system. For configurations
larger than 56 zones, multiple sets of LDMs are required with sequential addresses, the
first LDM starting at address 01. Each incremental setting adds 64 zones/points to the
system.
SW3 - Function DIP Switch
SW3, which is located only on the LDM-32, is used to set the annunciator functions.
Function settings include:
• Number of expanders connected
• 8-Point Shift enabled
• Receive Only communications to host FACP (no system control switches or
loss of supervision)
• Receive/Transmit communications to host FACP (system control switches plus
supervision)
• Control Switch Disable
• Piezo disable
• Flash Inhibit
Refer to Appendices A and B for additional information.
SW4 - Alarm/Trouble Mode Switch
The Alarm/Trouble mode switch is installed on the LDM-32 and LDM-E32. The switch
setting on each expander module must match the switch setting of the associated LDM-
32. 'Alarm Only' mode causes the driver outputs to turn on only for alarm conditions per
associatedzoneorpoint atthe hostFACP. Alarm/Trouble mode causes the driver outputs
to turn on for both alarm and trouble conditions per associated zone or point at the host
FACP. Since this switch affects the assignments of connectors J5, J6, J7 and J8, make
certain to review the appendices in this manual for additional information on wiring to the
lamp/LED drivers.
TB1 - Power, Earth Ground and Supervision
Removable terminal block TB1 appears only on the LDM-32. 24 volts power-limited,
regulated, non-resettable power from the host FACP or a compatible UL listed battery
backed power supply must be connected to TB1-3 (+) and TB1-5 (-). Terminals TB1-2
(+) and TB1-4 (-) may be used to daisy chain the 24 volts to other LDMs or devices.
Earth ground must be connected to TB1-1. Terminals TB1-6 and TB1-7 provide a
supervised input which may be used to supervise local power sources or other devices.
A trouble signal is transmitted to the host FACP upon an open circuit across these
terminals. The input must be power-limited. If these terminals are not used, a jumper
must be installed.
TB2- In/Out
Removable terminal blockTB2 appears only on the LDM-32. All LDM-32s must connect
to the EIA-485 communications bus circuit for proper operation. The EIA-485 bus carries
commands and data sent between the host FACP and the LDMs. The input must be
power-limited.
2.5Terminal Blocks
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10 15885 Rev. F1 8/2/95 P/N 15885:F1
2.6 Cables
Expander Ribbon Cable (75120)
TheExpander RibbonCableissupplied with theLDM-E32 toallow
for connection to the LDM-32 master module. The cable connects
between J2 of the LDM-32 or LDM-E32 and J3 of the next LDM-
E32.
The LDM-CBL24 and LDM-CBL48
Cable sets for connecting LDM-32 and LDM-E32 connectors to
lamps/LEDs,switches,etc., areprovidedthrough theoptionalLDM-
CBL24 (24" long) and LDM-CBL48 (48" long) cabling kits. Each
cable has a plug on one end for connection to the LDM modules.
• Each LDM-CBL24 cable kit includes:
✓(4) P/N 75116, 24" cable consisting of 8 stranded,
multicolored conductors. Cables connect to J5, J6, J7 and
J8.
✓(1) P/N 75122, 24" cable consisting of 10 stranded,
multicolored conductors. Connects to J1, optional control
switches.
✓(1) P/N 75117, 24" cable consisting of 2 stranded, single
color conductors. Connects to J1, Lamp Test Switch.
✓(1) P/N 75118, 24" cable consisting of 3 stranded,
multicolored conductors. Connects to J9 or J11, Lamp
Power.
• Each LDM-CBL48 cable kit includes:
✓(4) P/N 75147, 48" cable consisting of 8 stranded,
multicolored conductors. Cables connect to J5, J6, J7 and
J8.
✓(1) P/N 75150, 48" cable consisting of 10 stranded,
multicolored conductors. Connects to J1, optional control
switches.
✓(1) P/N 75148, 48" cable consisting of 2 stranded, single
color conductors. Connects to J1, Lamp Test Switch.
✓(1) P/N 75149, 48" cable consisting of 3 stranded,
multicolored conductors. Connects to J9 or J11, Lamp
Power.
• Keylock Control Switch Security:
A UL listed key-lock switch wired to J4 on the LDM-32 should
beusedto provideaccess security for allcontrolswitcheswired
to that set of LDM modules. Control switches will not function
when the key-lock switch is in its closed position.
KEYSWITCH LDM-32
J4
2
1
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15885 Rev. F1 8/2/95 P/N 15885:F1 11
2.7The LDM-R32
The LDM-R32 Relay Expander Module provides the LDM-32 or LDM-E32 with 32 dry Form-
A (normally open) contacts. The relay module serves as a slave to the particular lamp driver
annunciator it is connected to - instead of driving lamps or LEDs, the alarm and/or trouble
signals from the LDM-32 and LDM-E32 modules are used to activate the relays on the LDM-
R32. A maximum of two of these relay modules can be supported by an LDM-32/LDM-E32
operating in alarm-only mode, providing a maximum of 64 alarm relays. In alarm/trouble
mode, one,twoorfourLDM-R32modulesmaybeconnected to LDM-32/LDM-E32s,providing
a maximum of 64 alarm and 64 trouble relays. Includes mounting hardware, one Relay
Power Cable and four Relay Expander Ribbon cables for connection to the master LDM-32/
LDM-E32 module.
Figure 2-3: LDM-R32
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12 15885 Rev. F1 8/2/95 P/N 15885:F1
Section Three: Installation
This section discusses basic requirements and CHS-4L mounting instructions.
3.1 External Cabinets
The CAB-3A and the CAB-3B are UL listed cabinets suitable for use in graphic annunciator
applications. For size and dimensions, refer to the CAB-3 Series Installation Document .
Other cabinets such as those provided by custom graphic annunciator manufacturers may
be used provided they meet UL requirements as UL listed secured enclosures. Select an
appropriate knockout on the enclosure. Mount the cabinet and ground it to a solid metallic
earth ground.
3.2 CHS-4L Chassis
The CHS-4L chassis will support one LDM-32 module and up to three LDM-E32 expander
modules. The CHS-4L chassis may be mounted inside the CAB-3A and the CAB-3B
enclosures. Note that a solid earth ground connection is required for proper operation as
well as to aid in transient protection. Two female-to-female standoffs must be installed to the
chassis to secure the LDMs in place. (See Figure 3-1).
Figure 3-1: CHS-4L Mounting
Mount the CHS-4L Chassis to a cabinet and
secure with the hardware provided. A Grounding
CableAssemblymustbeconnectedto the chassis
mounting stud for connection to the annunciator's
Earth Ground terminal. For each LDM module to
be installed on the chassis, connect two female-
to-female standoffs (provided) to the upper
mounting studs on the chassis.
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15885 Rev. F1 8/2/95 P/N 15885:F1 13
Figure 3-3: LDMs Mounted in UL Listed Cabinet
Slip the bottom edge of the LDM board into the
sloton theCHS-4L chassisand move themodule
toward the standoffs. Secure the LDM to the
standoffs with the screws provided. Repeat for
installation of additional LDM modules.
Figure 3-2: Installing LDM Modules in CHS-4L
Connect an expander ribbon cable (P/N 75120) from the LDM-32 connector J2 to J3 of the
first LDM-E32 expander module. If multiple LDM-E32 modules are to be used, connect
additional cables from J2 to J3 as shown in Figure 3-3. Note: One LDM-32 may support a
maximum of three LDM-E32 modules.
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14 15885 Rev. F1 8/2/95 P/N 15885:F1
Figure 3-4: Mounting Optional LDM-R32 Relay Modules
Secure the LDM-R32 to the LDM-32 with the standoffs provided
(see below). Attach ribbon cables between the LDM-32 and the
LDM-R32 for each group of relays needed (connector J5 to J5, J6 to
J6, etc.) as illustrated at right. Note:The relay module can also be
connected to an LDM-E32.
Connect the RelayPower Ribbon Cable between J10 on the LDM-R32 and J10 on the LDM-
32. this connection supplies the power needed to energize the LDM-R32's relay coils during
activation.
LDM-R32
Chassis LDM-32
(or LDM-E32)
LDM-R32
LDM-32
StandoffStandoff
LDM-32
(or LDM-E32)
LDM-R32
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15885 Rev. F1 8/2/95 P/N 15885:F1 15
Section Four:Wiring Considerations
4.1 Limits
A maximum of 32 LDM-32s may be connected to the EIA-485 bus, but if other types of
devices are also connected to the EIA-485 bus, the maximum number of LDM-32s must be
reduced by the total of such devices. Total annunciation and switch capability depends
upon the number of LDM-E32 expander modules used.
4.2 Wire Runs
Communications between the Fire Alarm Control Panel and the LDM is accomplished over
atwo-wireEIA-485 serialcommunicationsbuswhich mustbe power-limited. Communications
between the host FACP and LDMs is supervised by the fire alarm control panel. Power
supplied by the host control panel or external power supply must be power-limited. It is
inherently supervised (loss of power also results in a communication failure at the control
panel). Referto appropriate control panelmanual forUL Power-limitedWiring Requirements.
Figure 4-1: EIA-485 Communications
4.3 Wiring Specifications
The EIA-485 circuit cannot be T-tapped; it must be wired in a continuous fashion from the
control panel to the LDMs. The maximum wiring distance between the panel and LDMs is
6000 feet. The wiring must be a 18 AWG to 14 AWG
twisted shielded pair cable having a characteristic
impedance of 120 ohms, +/- 20%. Limit the total wire
resistance to 100 ohms on the EIA-485 circuit, and 10
ohms on the LDM power circuit. Do not run cable
adjacent to, or in the same conduit as, 120 volts AC
service, noisy electrical circuits that are powering mechanical bells or horns, audio circuits
above 25 VRMS, motor control circuits, or SCR power circuits.
Note: All enclosures, including the FACP backbox, must be connected to earth ground!
Never use the shield for grounding purposes. Terminate the EIA-485 shield at the Fire
Alarm Control Panel only.
Fire Alarm Control Panel
STANDARD ANNEALED COPPER WIRE
Wire Size
A.W.G. Diameter in Mils
Cross Section Ohms per 1000 feet Pounds
per 1000 ft.
Circ. Mils Sq. Inch @ 77 F. @ 149 F.
14 64 4110 0.00323 2.58 2.97 12.4
16 51 2580 0.00203 4.09 4.73 7.82
18 40 1620 0.00128 6.51 7.51 4.92
Lamp Driver
Two-wire EIA-485
Circuit
(Maximum 6000 ft.)
Power for LDM
(18 to 14 AWG)
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16 15885 Rev. F1 8/2/95 P/N 15885:F1
4.4 EIA-485 Shield in Conduit
When the EIA-485 wiring is in conduit, connect the shield to system common. The shield
canenter the cabinet, butmust beinsulated from the cabinet (no electrical contact). Between
LDMs,wire-nutmultiple shields together(whichcan be insideofthe respectiveLDMenclosure
but ensure that the shield does not contact earth ground).
Figure 4-4:Terminating the Shield - No Conduit
Mountcabinet or backboxand draw allwiring intoenclosure.
Figure 4-2:Wiring the Enclosure
Annunciator
Enclosure
4.5 EIA-485 Shield Not in Conduit
When the EIA-485 wiring is not in conduit, terminate the shield at the outside of the FACP
cabinet. Do not allow the shield to enter or even touch the cabinet housing the LDMs.
Between LDMs, wire-nut multiple shields together
outside of the respective enclosures.
Ensure that the shield does not touch earth ground at any junction points.
Annunciator
Figure 4-3:Terminating the Shield - Conduit
Enclosure
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15885 Rev. F1 8/2/95 P/N 15885:F1 17
Supervision
Input Supervision
Input
5 VDC @ 0.5 mA
When not using the Supervision
input, jumper terminals 7 and 6
together.
Device to be supervised
Figure 4-6:Wiring SupervisionTerminals
Supervision Input -TB1,Terminals 6 & 7
The Supervision Input, which requires a normally-closed condition, can be used for
supervisingpower sourcesor otherdevices. It must be power-limited. Ifemployed,a change
in status will be transmitted to the host control panel in the event of device failure or restoral.
If not used, a jumper must be installed across these terminals on TB1. A trouble signal will
be registered by the control panel if a short circuit does not exist across terminals 6 & 7.
Figure 4-5:Wiring Multiple LDMs (6,000 ft. max run)
Host FACP First LDM
4.6 EIA-485, Power and Relay Wiring
EIA-485 - TB2,Terminals 1 to 4
• Do not T-tap the EIA-485 circuit. It will not function
properly. Wire as shown below. Must be power-limited.
• Leave a 120 ohm resistor installed across the EIA-485
Out terminals at the last LDM on the circuit (see below).
All other LDMs should not have a resistor installed.
Power, Earth Grnd and Relay -TB1,Terminals 1 to 7
• Connect Earth Ground (TB1-1) to a mounting screw on
the backbox or cabinet.
• 24 VDC Power supplied to the LDM must be power-
limited but it need not be supervised by an end-of-line
power supervision relay. This power is inherently
supervised (the control panel registers a loss of
communications during loss of power to the LDM).
Last LDM
120ΩΩ
ΩΩ
ΩELR
Part #71244
EIA-485 Out (+)
EIA-485 Out (-)
EIA-485 In (-)
EIA-485 In (+)
N.C. Supervision
Inputs
Common In (-)
Common Out (-)
Power In (+24VDC)
Power Out (+24 VDC)
Earth Ground
Normally Closed
Trouble Contacts
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18 15885 Rev. F1 8/2/95 P/N 15885:F1
UL Power Limited Wiring Requirements
Power limited and nonpower limited circuit wiring must remain separated in the cabinet. All
power limited circuit wiring must remain at least 0.25" away from any nonpower limited
circuitwiring. Furthermore, all powerlimited circuit wiring and nonpower limited circuit wiring
must enter and exit the cabinet through different knockouts and/or conduits. A typical wiring
diagram for the LDM-R32 is shown below. If this module is used to drive both power limited
and nonpower limited circuits, connect relays 1 to 16 to power limited circuits and connect
relays 17 to 32 to nonpower limited circuits or vice versa. Use an appropriate power limited
power supply which is UL listed for fire alarm systems to provide power for the power limited
circuits.
MPS-24A
TB3 Terminal 3 = +24 VDC
TB3 Terminal 4 = Common
MPS-24B
TB2 Terminal 3 = +24 VDC
TB2 Terminal 4 = Common
CAUTION: The +24 VDC provided on TB2 Terminal 3 is power-limited only when used with
the minus return onTB2Terminal 4. Do not use the minus return onTB2Terminal 2 with the
+24 VDC power on TB2 Terminal 3.
Note: Refer to Figure 4-7 for additional information on these power supplies.
LDM-R32
Non-Power
Limited
Circuits
Power
Limited
Circuits
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15885 Rev. F1 8/2/95 P/N 15885:F1 19
4.7 Remote Power Supply Connections
The LDMs may be powered by an MPS-24A or an MPS-24B. The power run to the LDMs
need not contain a Power Supervision Relay since loss of power is inherently supervised.
MPS-24A Main Power Supply
Connect the power run for the LDMs to MPS-24A TB3,Terminals 1 (+) and 2 (-). Maximum
current is 1 amp.
MPS-24A
Common (-)
to LDM-32 TB1-5
24 VDC Power (+)
to LDM-32 TB1-3
MPS-24B
Figure 4-7: Remote Power Supply Connections
MPS-24B Main Power Supply:
Connect the power run for the LDMs to MPS-24B, TB2, Terminals 1 (+) and 2 (-). No more
than 200 mA current can be drawn from these terminals in standby or alarm.
System 5000
Common (-)
to LDM-32 TB1-5
24 VDC Power (+)
to LDM-32 TB1-3
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20 15885 Rev. F1 8/2/95 P/N 15885:F1
4.8 Lamp/LEDWiring
Figure 4-8 illustrates LEDs being powered by the 5 volt output from LDM-32, J11 pin 1.
Figure 4-9 illustrates LEDs being powered by the 24 volt output from LDM-32, J9 pin 3.
Note: Use cable kits for wiring from connectors on LDM.
Figure 4-8:Typical LDM-to-Graphics Display
Connection @ 5VDC
Figure 4-9:Typical LDM-to-Graphics Display
Connection @ 24VDC
Note: Use cable kits for wiring from connectors to LDM.
Wiring is not
supervised
System
TroubleLED:
(Yellow)
Custom
Graphic
Display
System
TroubleLED:
(Yellow)
Wiring is not
supervised
Custom
Graphic
Display
Point Status LEDs:
Use red for alarm points,
yellow for trouble points
and green for output points
Point Status LEDs:
Use red for alarm points,
yellow for trouble points
and green for output points
Note: All LEDs must be located in the
same room as the LDM modules.
Use 680 ohm, 1/4-watt resistors for
each point if using 2 mA LEDs
Note: All LEDs must be located in the
same room as the LDM modules.
Use 10K ohm, 1/4-watt resistors for
each point if using 2 mA LEDs
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