Motor Torque Limit Active
ABB · ACS560 Standard Control Program Firmware
What does FF85 mean?
The drive is limiting motor torque based on calculated motor pull-out torque and the minimum/maximum torque limits defined by parameters 20.13 and 20.14. This informative alarm indicates the drive is operating at its torque limits, potentially due to high load, incorrect motor parameters, or insufficient motor identification. Sustained operation at torque limits can hinder performance and prevent achieving desired output.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
If LIMIT WORD 1 bit 0 TORQ MOTOR LIM is active, verify motor parameter settings (parameter group 99 START-UP DATA) and ensure an ID run has been successfully completed.
- 4
Evaluate the actual motor load to determine if it consistently exceeds the set torque limits; consider reducing the load or ensuring correct motor data entry.