6-8
Chapter 6 4100ES SPS Field Wiring
SPS NAC Wiring
Class A NAC
Wiring
To connect the SPS to reverse-polarity, non-addressable notification appliances using Class A
wiring, read the following instructions and refer to Figure 6-3.
1. Route wire (between 12 and 18 AWG) from the “B+”, “B-”, and SHIELD 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.
4. Repeat steps 1 through 3 for each NAC output you want to use.
5. Leave the 10 K, ½ W, brown/black/orange resistor (378-030) on each unused circuit. The
circuit must connect “B+” to “B-” terminals. No external end-of-line resistor is needed for
circuits in use.
Figure 6-3. Class A NAC Wiring
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
12 AWG to 18AWG
IMPORTANT: Conductors must test
free of all grounds.
Leave the 378-030 EOL
Resistor (10 K Ohm, ½ W;
brown/black/orange) on
unused circuits
Ferrite beads
required for RF immunity
to CE specified levels.
Use kit 4100-5129.
To Next Page
Loading...
Need help?
General
