35

IPM OverCurrent

Allen-Bradley · PowerFlex 750 AC Drive

What does 35 mean?

The current magnitude has exceeded the trip level set by P1640 [IPM Max Cur], as detected by the Intelligent Power Module (IPM). This fault protects the drive from severe damage due to excessive current. If persistent, it strongly indicates an overload, a short circuit condition in the motor or wiring, or an incorrect setting of P1640.

Complete Troubleshooting Guide

  1. 1

    Inspect the motor and mechanical load for any signs of an overload, mechanical binding, or physical obstruction.

  2. 2

    Verify that P1640 [IPM Max Cur] is set to an appropriate value for the motor and application; it should only be 0 in V/Hz or SVC mode.

  3. 3

    Check motor and power cabling for insulation damage or phase-to-phase/phase-to-ground short circuits.

  4. 4

    If no external cause is found, suspect a potential internal drive hardware failure.