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Johnson Controls, Inc. SLC Wiring Manual —
P/N 51870:G 04/23/2009
Monitor Modules
NFPA Style B IDC Using Monitor Modules
6.3 NFPA Style B IDC Using Monitor Modules
Connect the SLC wiring to the module terminals 1 (–) and 2 (+). Each M300MJ module takes one
address on the SLC. Use the rotary switches on the module to set it to the required SLC address.
Figure 6.7 shows typical wiring for a supervised and power-limited NFPA Style B (Class B)
Initiating Device Circuit using the M300MJ monitor module.
Module installation notes:
1.
The Initiating Device Circuit (IDC) is supervised and current-limited to 210 microamps
@ 24 VDC (nominal).
2.
The IDC provides the following services (do not mix):
• Fire alarm service
• Automatic and manual waterflow alarm service with normally open contact devices
• Sprinkler supervisory service with normally open contact devices
• Security service
3.
Refer to the
Device Compatibility Document
for compatible smoke detectors.
4.
See “Power Considerations” on page 53 for information on supervising 24 VDC power.
Figure 6.7 Typical Style B IDC Wiring with M300MJ
47K ELR
(supplied
with module)
Heat
detector
SLC
IDC
24 VDC Power
Filtered, Regulated,
Resettable
24 VDC
Four-wire
Detector Base
Manual pull
station
From Supply
To Next IDC
or
Supervision Device
SL
C-i
d
c
B
1t
p
H
.w
mf
