MAAP Ground Fault Troubleshooting Guide Rev C.wpd Page 6 of 7
c. Measure from earth ground to each side Mini Module input from conventional
NAC devices. If the resistance is less that 500K Ohms remove defective device
or defective Mini Module.
d. Reconnect SLC loop to AAC port and verify no ground fault condition exists
before proceeding to step 2.
e. Swap ADC card to eliminate a possible defective card.
f. Try another SLC loop on another AAC port, just in case the port is defective.
Note: Connecting and disconnecting SLC loops to ports may be performed with panel
powered up. However the panel could reset during a reconnection if a large number of
devices is present on the SLC loop.
2. Reconnect another SLC field wiring loop to another port. Wait five minutes, if no ground
fault occurs then repeat step 2.
d. If a ground fault occurs, a ground fault condition exists in the field wiring that was
just connected. Remove SLC loop from ADC port. Temporarily connect SLC
loop across conventional loop End of Line resistor, observing polarity. Ensure no
conventional field wiring is present. If no ground fault occurs temporarily connect
another SCL loop across another conventional loop End of Line resistor.
e. If a ground fault occurs, temporarily connect only one side of the SLC loop
across conventional loop End of Line resistor. Ensure no conventional field
wiring is present. If no ground fault occurs remove that half of the loop and
connect the other side.
f. If a ground fault occurs, a ground fault condition exists in the field wiring that was
just connected. Temporarily connect SLC loop across conventional loop End of
Line resistor, observing polarity. Ensure no conventional field wiring is present.
g. If a ground fault occurs, a ground fault condition exists in the field wiring that was
just connected. Remove SLC loop from port. Temporarily connect SLC loop
across conventional loop End of Line resistor, observing polarity. Ensure no
conventional field wiring is present.
3. Continue until all of the SLC loop circuits have been re-connected. If no ground fault
occurs contact Product Support at Monaco Enterprises for assistance.
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