F038Type 2 fault (manual reset) · Power sectionUsually repairable
PowerFlex 525 F038: Phase U To Gnd
What F038 means
Phase U of the drive output has a path to ground. F039 and F040 are the same fault on phases V and W.
Symptoms
Trips as soon as the drive is told to run.
Is it repairable?
Yes: a shorted output stage is repaired at component level.
Common causes
- Damaged insulation on that phase of the motor cable or motor
- Moisture
- A shorted output transistor on that phase
Safe checks
- 1With power off, disconnect the motor and megger each phase of the cable and the motor to ground. If both test good and the fault stays, the drive is the cause
Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.
Reviewed by AutomIQ repair technicians. Code and name from the PowerFlex 520-Series Adjustable Frequency AC Drive User Manual.
Related PowerFlex 525 faults
- F004UnderVoltage
- F005OverVoltage
- F007Motor Overload
- F008Heatsink OvrTmp
- F012HW OverCurrent
- F013Ground Fault