12
B+
B-
SHLD
B+
B-
SHLD
B+
B-
A+
A-
SHLD
A+
A-
SHLD
A+
A-
NAC1
NAC2
NAC3
IN1
IN2
NAC1
NAC2
NAC3
IN1
IN2
B+
B-
IN1+
IN1-
IN2+
IN2-
B+
B-
B+
B-
SHLD
SHLD
B+
B-
IN1+
IN1-
IN2+
IN2-
B+
B-
B+
B-
SHLD
SHLD
EOLR
EOLR
NAC1
NAC2
NAC3
NAC1
NAC2
NAC3
EOLR
EOLR
4081-9008
EOL HARNESS
10 K 1/2 W
4081-9008
EOL HARNESS
10 K 1/2 W
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
TYPICAL
APPLIANCE
CLASS B WIRING
CLASS A WIRING
NOTE 1
NOTE 1
EOLR
EOLR
NOTE 1
NOTE 1
EOLR
EOLR
NOTE 1
NOTE 1
4100-1266 Class B Expander (option)
4100-5116 Expansion Signal Card
4100-1245 Class A Adapter
4100-5116 Expansion Signal Card
To Source
NAC
To Source
NAC
Provide DC NAC wiring as shown in Figure 6.
Figure 6. DC NAC Wiring
Continued on next page
Wiring,
Continued
DC NAC Wiring
1. Leave the 10 K, ½ W resistors (378-030 – brown/black/orange) on the “B+” and “B-” terminals of
unused circuits.
2. All wiring is between 18 AWG (0.8231 mm
2
) (minimum) and 12 AWG (3.309 mm
2
) (maximum).
3. Field wiring is power-limited.
4. Maximum current is 1.5 A per NAC. Total NAC capacity is 3 A as limited by the source NAC rating.
5. Signal wiring must test free of all grounds.
4100-1267 Class A Adapter
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