SW OverCurrent
Allen-Bradley · PowerFlex 750 AC Drive
What does 36 mean?
The drive output current has exceeded its 1 ms software current rating, which is a very fast-acting protection mechanism. This rating is typically between 200-250% of the drive's continuous rating and less than the hardware overcurrent level. This fault indicates a severe and rapid transient overload or a hard short circuit on the motor output terminals, protecting the drive's output stage from immediate damage.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Verify motor parameters, autotune results, and current loop tuning are correct for the application to prevent transient overcurrents.
- 4
If external checks yield no resolution, consider a potential internal drive hardware issue, possibly related to the output section.