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LDM Series Instruction Manual —
P/N 15885:H3 8/12/2019
LDM Features
The LDM-R32
Keylock Control Switch Security
A UL listed key-lock switch wired to J4 on the LDM-32 should be used to provide access security
for all control switches wired to that set of LDM modules. Control switches will not function
when the key-lock switch is in its closed position.
2.8 The 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 annun-
ciator 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 maxi-
mum 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, two or
four LDM-R32 modules may be connected 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.
Keyswitch
LDM-32
2
1
J4
J5
J6
J7
J8
J10
K1
K2
K3
K4
K5
K6
K7
K8
K9
K10
K11
K12
K13
K14
K15
K16
K17
K18
K19
K20
K21
K22
K23
K24
K25
K26
K27
K28
K29
K30
K31
TB1
TB5
TB2
TB3
TB6
TB4
K32
1
1
8
1
1
1
2
2
7
2
2
2
3
3
6
3
3
3
4
4
5
4
4
4
5
5
4
5
6
6
3
6
7
7
2
7
8
8
1
8
Figure 2.3 LDM-R32