Instruction manual

P84905-001 G
Sheet 22 of 37
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AUX Output Current Limit Reduce the number of NAC Appliances on Output1
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SYNC BUS Short
Check for a wiring short. Check for improperly wired NAC
circuit. (If an appliance is wired + to – and – to + a short trouble
will be indicated.
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SYNC BUS Open
Check SYNC BUS terminals for good connections. Check NAC
circuit wiring for continuity. Check NAC circuit for 10K Ohm
EOLR.
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SYNC BUS Current Limit
Excessive current on the SYNC BUS. Reduce the number of
Power Supplies connected to the circuit.
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Dry Contact 1
Ground Fault
(Note 1)
Check for circuit wire to enclosure or conduit.
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Dry Contact 2
Ground Fault
(Note 1)
Same as above
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NAC Output 1+
Ground Fault
(Note 1)
Same as above
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NAC Output 1–
Ground Fault
(Note 1)
Same as above
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NAC Output 2+
Ground Fault
(Note 1)
Same as above
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NAC Output 2–
Ground Fault
(Note 1)
Same as above
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NAC Output 3+
Ground Fault
(Note 1)
Same as above
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NAC Output 3–
Ground Fault
(Note 1)
Same as above
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NAC Output 4+
Ground Fault
(Note 1)
Same as above
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NAC Output 4–
Ground Fault
(Note 1)
Same as above
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AUX Output+
Ground Fault
(Note 1)
Same as above
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AUX Output–
Ground Fault
(Note 1)
Same as above
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SYNC BUS+
Ground Fault
(Note 1)
Same as above
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SYNC BUS-
Ground Fault
(Note 1)
Same as above
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Battery Wires
Ground Fault
(Note 1)
Same as above
Note 1: When LED indicator D3 is lighted, it indicates a general ground fault condition. Momentarily depress switch
SW5 (Ground Fault Detect Enable Pushbutton). The Coded Trouble LEDs will indicate the circuit location of the
ground fault.
FUSE REPLACEMENT PROCEDURE:
1. Turn off the AC Mains Power.
2. Open the enclosure and turn off DC battery power.
3. Remove F1.
4. Replace F1 with a 10A 250V fuse.
5. Remove F2.
6. Replace F2 with a 10A 250V fuse.
7. Turn on DC battery power.
8. Close the enclosure.
9. Turn on AC Mains.