Mircom FX-400 - NAC Circuit Wiring Details

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7.3.3 Addressable Loop Wiring - Class X
Figure 15 Addressable Loop Wiring - Class X
7.4 NAC Circuit Wiring
The FX-400 Fire Alarm Control Panel supports up to 4 NAC circuits that can be wired as
either:
• Class B
• Class A
To supervise each Class B NAC circuit, use a 3.9K End-of-Line resistor.
Each NAC circuit provides up to 1.5A, total 5A of current maximum if no auxiliary power is
used.
For detailed wiring diagrams see Figure 16 NAC Circuit – Class B Wiring or Figure 17 NAC
Circuit – Class A Wiring.
MULTI-SENSOR
DETECTOR
PHOTOELECTRIC SMOKE
SENSOR
TRI-MODE HEAT DETECTOR
OUTPUT MODULE
I
M500X ISOLATOR
M
II
I I I
I
M
I
I
A LOOP1
B
+
-
+
-