Wiring a Signaling Line Circuit (SLC) Installation
IQ-301 PN 50036:F 10/29/2001 53
Wiring an NFPA Style B IDC with Two-wire Detector Modules
Note: Figure 35 shows typical wiring for a supervised and power-limited NFPA Style B
IDC using FZM-1 modules. Refer to Installation Document shipped with each two-wire
detector monitor module for specific installation notes for this variety of module.
Wiring guidelines for this IDC are:
Refer to the Device
Compatibility Document for
detector and power
supervision relays.
• Maximum Initiating Device Circuit (IDC) resistance is 25 ohms.
• Maximum alarm current is 90 mA.
• Maximum detector standby current is 2.4 mA.
Figure 35 Typical Style B (Class B) IDC Wiring with FZM-1
+
+
-
-
+
+
-
-
TB4
TB5 TB6
TX REF RX REF
OUT OUT IN IN
1 2 3 4 5 6
A B B+ A+ B- A -
TB1
TB2 TB3
+ - + - + -
B+ B- B+ B- B+ B- B+ B- NO C NO NC C NO NC C
90
81
72
63
54
-
+
+
-
- +
3.9K ELR – supplied
with monitor module
To the next device
on the SLC
24 VDC filtered, regulated and resettable power:
24 VDC (+) TB1-5
24 VDC (–) TB1-6
SLC out
SLC (+) TB 6-3
SLC (–) TB 6-5
FZM-1
Compatible two-wire
smoke detectors
AFP200-IDC-B-FZM1.CDR
CPU
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