Thermal Overload of Brake Coil / Defective Brake

What does 89 mean?

This fault indicates a thermal overload of the brake coil or a defect within the brake itself, including incorrect connection. Overtemperature can lead to reduced braking force, premature wear, or complete failure of the brake mechanism.

• Ramp time set too short, causing excessive brake engagement/disengagement cycles or slippage.
• Defective brake coil.
• Incorrect connection of the brake coil.
• Incorrect combination of the drive (brake coil) and MOVIMOT inverter.
• Incorrect setting of DIP switch S1/6 for 'MOVIMOT and motor with one lower power rating' combinations.

Click steps to track your progress.

1. 1

   Increase the set ramp time to reduce brake stress.

2. 2

   Perform a brake inspection (refer to 'DR/DV/DT/DTE/DVE Series AC Motors' operating instructions').

3. 3

   Check the brake coil connection for correct wiring and integrity.

4. 4

   Check the combination of the drive (brake coil) and MOVIMOT inverter if the fault is signaled shortly after the first enable.

5. 5

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

6. 6

   Reset the fault by switching off and then switching on the DC 24V supply voltage.