F31

IGBT temperature

Vacon · NXP AFE-II Drive

What does F31 mean?

The IGBT Inverter Bridge over-temperature protection has activated due to an excessively high short-term overload current. This indicates the power semiconductors are being stressed beyond their safe operating limits. Repeated trips can degrade the IGBTs.

Complete Troubleshooting Guide

  1. 1

    Verify the connected load against the motor and drive ratings.

  2. 2

    Confirm the motor size is appropriate for the application and the drive.

  3. 3

    Perform an identification run (auto-tuning) to ensure optimal motor magnetization and control parameters are set.

Source: Vacon Manual