Document #15668 Rev. I 04/20/98 P/N 15668:I
37
The M302 Monitor Module
Style B Initiating Device Circuit (Utilizing M300)
The NFPA Style B IDC (Initiating Device Circuit), utilizing an M300 Monitor Module, is supervised and
power-limited.
FIGURE 2-19:
Style B Circuit using M300
1 2 3 4 5 6
T
B
6
A B B+ A+ B- A-
Shield
1 2 3 4 5 6
T
B
4
+ - + - + -
MS-9200
SLC (+) TB6-3
SLC (-) TB6-5
24V (+) TB4-5
24V (-) TB4-6
+
+
-
-
+
+
-
-
+
+
-
-
+
+
-
-
M300
To Next Device on Loop
+
-
CAUTION! Do not loop wiring
under any terminals. Break wire
run to maintain supervision.
Resettable 24 VDC
4-wire smoke
detector power
(300 mA max.)
Heat Detector
Manual Pull
Station
UL listed Power Supervision Relay
(must be wired as last device on
loop as shown).
24 VDC 4-Wire Smoke Detector
End-of-Line Resistor
47K ohm, ½ watt resistor
(N-ELR in Canada)
Loop Out
-
+
+
+
-
-
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