Releasing Applications Applications
NFS-640 Installation Manual P/N 51332:B1 12/01/2003 65
4.5.5 Connecting a Releasing Device to the FCM-1 Module
The module can control 1 A of current. Make sure to keep total system current within the limits of
the power supply. You can power the module from the power supply of the Control Panel or any
UL -listed 24 VDC regulated power-limited power supply for Fire Protective Signaling. For more
information, refer to the Device Compatibility Document.
Figure 40 Typical Connection of a 24 VDC Releasing Device to the FCM-1 Module
Circuit Requirements. When connecting a releasing device to the FCM-1 module, note the
following:
1. For NFPA 13 and 15 applications, disable the Soak Timer (Soak=0000); for NFPA 16
applications, set the Soak Timer (0600-0900 seconds). Refer to the NFS-640 Programming
Manual for instructions on setting the Soak Timer.
2. Circuits are supervised and power-limited (except if configured according to Note 3a below).
3. In applications not requiring power-limited circuits
–
a) If the application does not require supervising the releasing device against shorts, End-of-
Line devices (P/N REL-47K) are not required
b) Limited energy cable cannot be used for wiring of a releasing device circuit;
c) Maintain a 0.25 inch (6.35 mm) spacing between the releasing circuit device wiring and any
power-limited circuit wiring; and
d) Program the releasing circuit for Type Code
RELEASE CKT.
4. The FCM-1 module must be programmed with a releasing type code listed in the NFS-640
Programming Manual.
+
–
+
–
8
9
8
8
9
9
10
11
12
13
14
150
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
0
1
2
3
4
7
6
5
TENS
ONES
DDRESS
LOOP
Compatible UL-listed
24 VDC releasing device
REL-47K
Brown Red
N.C. Supervision
Relay Contact
Part of A77-716B
Non-resettable
24 VDC Power
Power Supervision
Relay (A77-716B)
Relconn-fcm.cdr
-
+
FCM-1
-
+
SLC from FACP
or LEM-320
Note: See preceding text for circuit requirements.
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