How do I troubleshoot a ground fault on the Edwards iO64?

To troubleshoot a ground fault on the iO64, use the Fast Ground Check tool to reduce the detection interval from 30 seconds to 4 seconds (Page 216, 228) [4].

This provides faster feedback while you disconnect sections of field wiring to isolate the fault. 1. Press the Menu button and select Diagnostics. 2. Enter the level two password. 3. Select Fast Ground Check. 4. Select Start to begin the 4-second check (Page 228) [4].

1. Systematically disconnect circuit branches until the Ground Fault LED stops flashing. 6. Select End to disable the fast check once the fault is cleared (Page 228) [4].