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LDM Series Instruction Manual —
P/N 15885:H3 8/12/2019
System 500 (UL 8th)
Annunciator Operation
System 500 CPU Annunciator Point Assignments to LDMs
System 500 Option Modules Annunciator Point Assignments to LDMs
System 500 CPU Points
LDM Alarm Red LED
LDM Trouble/Supv Yellow LED
LDM Control Switches
Annunciator Point #1
a
1
If the 8-Point Shift (DIP switch #4 of SW3) is set ON, the eight functions (ACK, SIL, RESET, LAMP TEST, NAC1, NAC2, MUNTIE,
RELAY) will be shifted out of annunciator points 1 through 8. These eight points would then annunciate the status of the first eight zones.
Indicates System Alarm
Indicates System Trouble
Functions as an
ACKNOWLEDGE
Annunciator Point #2
not used
Indicates that signals have been
silenced
Functions as a SIGNAL
SILENCE
Annunciator Point #3
not used
not used
Functions as a SYSTEM
RESET
Annunciator Point #4
not used
Indicates Supervisory Condition
not used
Annunciator Point #5
Indicates that Notification Circuit 1
has been activated
Indicates trouble status of circuit
Controls Notification Circuit 1
Annunciator Point #6
Indicates that Notification Circuit 2
has been activated
Indicates trouble status of circuit
Controls Notification Circuit 2
Annunciator Point #7
Indicates that the Remote Signaling
Municipal Tie has been activated
Indicates trouble status of circuit
Controls Remote Signaling
Municipal Tie
Annunciator Point #8
Indicates that the Alarm Relay has
been activated
Indicates Module Trouble, Power
Failure, or Disabled Circuit(s)
Controls Alarm Relay
System 500 CPU Points
LDM Alarm LED Red
LDM Trouble/Supv LED Yellow
LDM Control Switches
a
1
Optional control switches are active only if all of these conditions are met:
a) Receive Only (DIP Switch #5) is set to OFF.
b) Switch Inhibit (DIP Switch #7) is set to OFF.
IZ-4, IZ-4A, IZ-8
Alarm Status per Circuit
b
2
If an IZ-4, IZ-4A or IZ-8 circuit is programmed on the System 500 as a supervisory point, both the red and yellow LEDs will be
illuminated for a supervisory condition. Illumination of the yellow LED alone indicates a trouble condition (open circuit) on the IZ
supervisory circuit.
Trouble Status per Circuit
not used
IC-4, ICE-4, CR-4L
Indicates Activation
Indicates Trouble per Circuit
Control Notification Circuit
CR-4, CRE-4, CR-4L
Indicates Activation
Indicates Trouble per Circuit
Controls Relays
TC-2, TC-4
Indicates Activation
Indicates Trouble per Circuit
Remote Switch Functions
Alarm and Trouble Mode
without 8-Point Shift
Alarm and Trouble Mode
with 8-Point Shift
LDM Switch
Position
LDM-32
1st LDM-E32
LDM Switch
Position
LDM-32
1
ACK
Circuit 9
1
Circuit 1
2
SIG. SIL.
Circuit 10
2
Circuit 2
3
RESET
Circuit 11
3
Circuit 3
4
not used
Circuit 12
4
Circuit 4
5
NAC 1
Circuit 13
5
Circuit 5
6
NAC 2
Circuit 14
6
Circuit 6
7
MUN TIE
Circuit 15
7
Circuit 7
8
Alarm Relay
Circuit 16
8
Circuit 8
9
Circuit 1
Circuit 17
9
Circuit 9
10
Circuit 2
Circuit 18
10
Circuit 10
11
Circuit 3
Circuit 19
11
Circuit 11
12
Circuit 4
Circuit 20
12
Circuit 12
13
Circuit 5
Circuit 21
13
Circuit 13
14
Circuit 6
Circuit 22
14
Circuit 14
15
Circuit 7
Circuit 23
15
Circuit 15
16
Circuit 8
Circuit 24
16
Circuit 16
Table A.1 LDM Series Switch Control Functions