Thermal overload of brake coil or brake coil defective

What does 89 mean?

This fault indicates that the brake coil has overheated or is defective. It may be caused by frequent braking operations, excessively short ramp times, a mismatch between the drive and the MOVIMOT® frequency inverter, or incorrect internal resistance of the brake coil.

• Ramp time set too short, leading to excessive brake usage.
• Defective brake coil.
• Mismatch between the drive (brake coil) and MOVIMOT® frequency inverter, especially if the fault occurs shortly after initial enable.
• Incorrect setting of DIP switch S3/2 (AS-Interface) or S1/6 (Standard Design) for MOVIMOT® and motor with one lower power increment.
• Incorrect internal resistance of the brake.

Click steps to track your progress.

1. 1

   Extend the set ramp time to reduce brake cycling.

2. 2

   Perform a brake inspection (refer to the "Inspection and Maintenance" section of the manual).

3. 3

   If the fault occurs shortly after initial enable, check the combination of the drive (brake coil) and MOVIMOT® frequency inverter for compatibility.

4. 4

   For MOVIMOT® and motor combinations with one lower power increment, check the position of DIP switch S3/2 (AS-Interface) or S1/6 (Standard Design).

5. 5

   Check the internal resistance of the brake (refer to the "Technical Data" section of the manual).

6. 6

   Switch off the 24 VDC supply voltage to reset the fault.