F005Type 1 fault (auto-reset) · Power sectionUsually repairable
PowerFlex 525 F005: OverVoltage
What F005 means
The DC bus voltage rose above its maximum, usually because the motor is feeding energy back into the drive.
Symptoms
Trips while the motor is slowing down, or with a load that pushes the motor (lowering, unwinding, fans spinning on).
Is it repairable?
Yes: if the brake transistor or bus sensing has failed, the drive can be repaired.
Common causes
- Deceleration time too short for the load inertia
- Overhauling load with no dynamic braking
- High or spiking incoming voltage
- A failed brake resistor or brake circuit
Safe checks
- 1Lengthen the decel time as a test
- 2Check the incoming voltage
- 3If a brake resistor is fitted, measure it and check its wiring
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
- F007Motor Overload
- F008Heatsink OvrTmp
- F012HW OverCurrent
- F013Ground Fault
- F021Output Ph Loss