Cause : Ground Fault comes when the ground fault current at the Inverter output exceeded approximately 50% of the Inverter rated output current.

1. A ground fault occurred at the Inverter output. (A ground fault can be caused by motor burn damage, worn insulation, or a damaged cable.)
2. short-circuit between +V, -V, and AC terminals occurred.
   • Overload in the control circuit terminal
3. Reset the fault after correcting its cause.
   Note: Before turning the power ON again, make sure that no short- circuit or ground fault occurs at the Inverter output.
4. Make sure that incorrect wiring has not been done.
   • Check the resistance and wiring for the frequency setting potentiometer, etc. (Check that the current for terminals +V and –V is 20 mA or less.)