Specifications

70
Wiring
7.3.3 Addressable Loop Wiring - Class A or Style 7
Figure 15 Addressable Loop Wiring - Class A or Style 7
7.4 NAC Circuit Wiring
The FX-3500 supports up to 4 NAC circuits that can be wired as either:
• Class B (Style Y)
• Class A (Style Z)
To supervise each Class B NAC circuit, use a 3.9K End-of-Line resistor.
Each NAC circuit provides up to 1.5A, total 6A of current maximum if no auxiliary power is
used.
For detailed wiring diagrams see Figure 16 NAC Circuit – Class B or Style Y Wiring or Figure
17 NAC Circuit – Class A or Style Z Wiring.
ION SMOKE
DETECTOR
PHOTO SMOKE
DETECTOR
HEAT DETECTOR
OUTPUT MODULE
I
ISOLATOR
M
II I I I
I
M
I
I
A LOOP1
B
+
-
+
-