Cause : Stack overflow comes when hardware or software issue in drive control card. The "stack" is a dedicated area of memory within the ABB ACS880 drive's processor. It plays a crucial role in program execution by temporarily storing data related to function calls, variables, and intermediate calculations.

A 6E04 "stack overflow fault" in your ABB ACS880 drive indicates an issue with the drive's internal program exceeding its allocated memory space. This can happen due to various reasons, and it's important to troubleshoot the issue to prevent unexpected drive behavior or damage.

• Reboot the control unit (using parameter 196.08 Control board boot) or by cycling power.