Cause: Safety hardware fault comes when the drive detected an issue with the safety input circuit that prevents unintended motor starts and protects personnel from operational hazards.

powerflex f111 indicates Safety hardware fault. This means the safety circuit hardware inside the drive has detected an internal problem.

Follow these steps to correct powerflex f111:

• Check safety input signals. If not using safety, verify and tighten jumper for I/O terminals S1, S2, and S+.
• Replace control module if fault cannot be cleared.
• Power restart drive.
• Check drive control wiring.