brF

Brake Feedback Error

Schneider Electric · Altivar Machine ATV320 Variable Speed Drive

What does brF mean?

A detected error in the feedback signal from the brake contactor. This means the drive cannot reliably confirm the state (engaged or disengaged) of the motor brake, which can lead to safety interlock issues or unexpected motor behavior.

Complete Troubleshooting Guide

  1. 1

    Verify wiring connections for the brake feedback circuit, checking for breaks or loose terminals.

  2. 2

    Inspect the brake contactor auxiliary contacts for proper operation, cleanliness, and wear.

  3. 3

    Check any brake feedback sensor or switch for damage, misalignment, or proper activation.

  4. 4

    Ensure correct brake control and feedback parameters are configured in the drive.