F39

Phase V to Gnd

Allen-Bradley · PowerFlex 4M Adjustable Frequency AC Drive

What does F39 mean?

An electrical short circuit has been detected between the drive's output phase V and ground. This could be due to insulation breakdown in the motor winding or the cable connecting the drive to the motor, posing a risk of electrical shock and further equipment damage if not resolved.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    If wiring and motor check out, the fault may be internal to the drive; consider replacing the drive if the fault persists.

Source: Allen-Bradley PowerFlex 4M Adjustable Frequency AC Drive
View Official PDF