Johnson Controls IFC-320E - 6.6 NFPA Style B IDC Using Zone Interface Modules

Johnson Controls, Inc. SLC Wiring Manual — P/N 51870:G 04/23/2009 39
NFPA Style B IDC Using Zone Interface Modules Monitor Modules
6.6 NFPA Style B IDC Using Zone Interface Modules
Connect the SLC wiring to the M302MJ module terminals 1 (–) and 2 (+). Each module takes one
address on the SLC. Use the rotary switches on the module to set it to the required SLC address.
Figure 6.10 shows typical wiring for a supervised and power-limited NFPA Style B (Class B) IDC
using the M302MJ 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.
Figure 6.10 Typical Style B IDC Wiring with M302MJ
SLC
IDC
SLC-idcB2tpH.wmf
M302MJ
Two-wire
smoke
detectors
3.9K ELR
(supplied with module)
24 VDC Resettable power.
90 mA External 24 volt supply required
(Non-resettable power may be used for IFC-
320/E/C, IFC2-640/E, IFC-640/E, IFC2-3030,
or IFC-3030 when operating in FlashScan
mode.)