Addressable Intelligent Module—AIM-200 Addressable Intelligent Module 25
Figure 19: M500MJ Monitor Module
The M500MJ monitor module is an addressable module that monitors
normally open contacts, shorting type alarm initiating devices. The
supervised M500MJ circuit can be wired as an NFPA Style B or Style D
initiating device circuit. There is no limit to the number of contact type
devices installed on a monitor module circuit. Refer to Figures 21 and 22
for M500MJ wiring diagrams.
Connect the communications loop to M500MJ Terminals 1(-) and 2 (+).
The M500MJ occupies one module address on the loop. Set the rotary
switches on the M500MJ to the particular loop address required.
Connect the normally open contacts of the alarm initiating devices to a
single two-wire circuit. This circuit cannot be T-tapped or branched in any
fashion, and must be terminated across the last device by a listed 47K, 1/2
watt ELR (Part No. A2143-00, supplied with module). Connect the circuit
to M500MJ Terminals 6 (-) and 7 (+).
Connect the normally open contacts of the alarm initiating devices to a
single four-wire circuit. This circuit cannot be T-tapped or branched in any
fashion. No external ELR is required for Style D wiring. Connect the
4-wire circuit to M500MJ Terminals 6 (-) and 9 (-), then 7 (+) and 8 (+).
M500MJ
Monitor Module
Communications
Loop
Connections
NFPA Style B
Initiating Device
Circuit
NFPA Style D
Initiating Device
Circuit
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