Task overload

What does 6481 mean?

An internal fault in the ACS880 drive indicating that a processing task within the control system has exceeded its allocated execution time. This fault cannot be reset through normal means, pointing to a severe internal issue.

• Excessive processing load on the drive's central processing unit (CPU) due to complex application logic or communication demands.
• Software error causing an infinite loop or unexpectedly high CPU usage by a specific task.
• Internal timing issue or resource contention within the drive's operating system.
• Degradation of internal hardware components affecting processing speed.

Click steps to track your progress.

1. 1

   Note that this fault cannot be reset directly; a power cycle may temporarily clear it but indicates a deeper issue.

2. 2

   Check for any recent parameter changes or application program modifications that might increase processing demands (e.g., fast control loops, extensive fieldbus communication).

3. 3

   Record all event log data, including auxiliary codes and the exact time of occurrence.

4. 4

   Contact ABB technical support immediately with all collected diagnostic information, as this indicates a severe internal error requiring expert analysis.