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How do I fix an F3 Earth Fault Protection code for a DG1 drive?

The earth fault is a software function that monitors the sum of all of the output currents. The drive is looking for this to be less than 15% of the motor nameplate current by default but this value can be selected in the protections parameter group. The first step is to disconnect the motor and run the drive. If the drive faults more than likely the problem is in the drive the ground connects should be check to make sure there is a solid ground as noise can cause this fault. If the drive does not trip it is best to try the drive on a test motor to see if it can run this. If the drive trips on a test motor again this problem is likely to be in the drive so the drive should be replaced. If the drive works on the test motor hook back up to the motor in question and monitor the output with a zero sum CT. If the zero sum current get above the trip level but the drive is tripping this would also likely be the drive. If the zero sum current get above the trip level the problem is outside of the drive and the motor and its cabling will need to be checked out.