Stack overflow

What does 6487 mean?

An internal fault in the ACS880 drive indicating that the drive's internal software stack has overflowed. This typically points to a software defect, excessive recursion, or memory corruption. This fault cannot be reset.

• Software bug or defect in the drive's firmware causing excessive memory allocation on the stack.
• Corrupted memory or heap space, leading to unexpected stack growth.
• Complex application programming or specific parameter settings causing deep or recursive function calls.
• Internal operating system issue related to memory management.

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 could lead to complex or recursive operations.

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.