Old Hand Fault Finder

Allen-Bradley PowerFlex 525 F012: HW OverCurrent

Cites the manual · line-by-line check pending

What it means Output current spiked past the hardware limit.

Likely causes

  • Short in motor or cable
  • Very fast accel
  • Shock load

Checks, in order

  1. Megger motor and cable (drive disconnected)
  2. Check accel
  3. Check for mechanical jams

Old Hand tip

Disconnect the drive before you megger.

Source

Source (reworded, not copied): Rockwell Automation, PowerFlex 520-Series AC Drives User Manual, publication 520-UM001O-EN-E (September 2025), Chapter 4 Troubleshooting. Official manual (PDF). Fault numbers and names can differ between firmware versions.