bLF

Brake control detected fault

Schneider Electric · ATV32HD11N4 Variable Speed Drive

What does bLF mean?

A fault indicating that the brake release current was not reached, or the brake engage frequency threshold was not set while brake control was assigned. This points to an issue within the motor's braking system or its configuration, potentially preventing the brake from operating correctly.

Complete Troubleshooting Guide

  1. 1

    Check the drive/motor connection for proper wiring and integrity.

  2. 2

    Inspect the motor windings for any damage or faults that might impede brake function.

  3. 3

    Verify the [Brake release I FW] (Ibr) setting in the [APPLICATION FUNCT.] (FUn-) menu, ensuring it is appropriate.

  4. 4

    Apply the recommended settings for [Brake engage freq] (bEn) as specified on pages 84 and 85 of the manual.