SI CU: STOP A initiated

What does 201600 mean?

This fault indicates that the drive-based Safety Integrated (SI) function in the Control Unit (CU) has detected an anomaly and initiated a STOP A, which involves pulse suppression via the safety shutdown path. This can be due to an unsuccessful forced checking procedure of the safety path, or a subsequent response to a monitoring channel defect (F01611). The fault value provides more detail, such as stop requests, pulse suppression issues, or feedback discrepancies. This safety-critical fault immediately inhibits motor operation to prevent hazardous situations.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Replace the involved Motor Module if the issue persists after STO cycle or F01611 diagnostics, indicating a hardware fault.