How to fix earth fault in Danfoss VLT AutomationDrive FC 302 DC Drives?
- JJames Hopkins PhDSep 18, 2025
An earth fault in Danfoss DC Drives indicates current leakage from the output phases to earth, either in the cable between the frequency converter and the motor or in the motor itself. Remove power to the frequency converter and repair the earth fault. You can also check for earth faults in the motor by measuring the resistance to ground of the motor leads and the motor with a megohmmeter.