Thermal overload of brake coil or defective brake coil

What does 89 mean?

The brake coil has either experienced a thermal overload or is internally defective. This can result from short ramp times, excessive braking cycles, or an incompatibility between the drive and inverter, impacting braking performance.

• Ramp time setting is too short, leading to frequent or harsh braking.
• Defective brake coil, preventing proper heat dissipation or operation.
• Incorrect combination of the drive (brake coil) and MOVIMOT frequency inverter, especially if the fault occurs shortly after initial enable.
• Incorrect DIP switch S1/6 setting for MOVIMOT and motor combinations with a lower power rating.

Click steps to track your progress.

1. 1

   Extend the set ramp time in the inverter parameters.

2. 2

   Perform a thorough brake inspection, referring to the "Inspection and Maintenance" section of the manual for procedures.

3. 3

   Check the compatibility and configuration of the drive (brake coil) and MOVIMOT frequency inverter if the fault occurs shortly after initial activation.

4. 4

   For MOVIMOT and motor combinations with one lower power rating, check the setting of DIP switch S1/6.

5. 5

   Reset the fault by switching off the 24VDC supply voltage or using MOVILINK.

6. 6

   If the fault persists after these steps, contact SEW service.