21
To connect the RPS or SPS to reverse-polarity, non-addressable notification appliances using Class
A wiring, read the following instructions and refer to the figure below.
1. Route wire (between 12 [3.309 mm
2
] and 18 AWG [0.8231 mm
2
]) from the “B+” and “B-”
outputs on TB2 of the SPS to the appropriate inputs on a peripheral notification appliance.
Use NAC1, NAC2, or NAC3.
2. Route wire from the first appliance to the next one. Repeat for each appliance.
3. Route wire from the last appliance to the A+ and A- inputs on the same NAC circuit of TB1
of the SPS or RPS.
4. Repeat Steps 1 through 3 for each NAC output you want to use.
5. Leave the factory-installed 10 K, 1/2 W, brown/black/orange resistor on each unused
circuit. The circuit must connect “B+” to “B-” terminals. No external end-of-line resistor
is needed for circuits in use.
P1
3
2
1
B+ B- A+ A-
TYPICAL
APPLIANCE
RED
RED
RED
NAC1
B+ B- A+ A-
NAC1
B+ B- A+ A-
NAC1
LED1 LED2 LED3
TYPICAL
APPLIANCE
BLK
BLK
BLK
NAC2
NAC3
Figure 7. Class A NAC Wiring
Continued on next page
NAC Field Wiring,
Continued
Class A NAC Wiring
12 AWG (3.309 mm
) to
18 AWG (0.8231 mm
2
)
IMPORTANT: Conductors must test
free of all grounds.
You must have the EOL
Resistor (10 K Ohm, 1/2 W;
Brown/Black/Orange) on
unused circuits
NAC2 NAC3
Ferrite beads
required for
CE compliance.
Use Kit 4100-5129.
To Next Page
Loading...
Need help?
General
