The F01611 error code in your Siemens Sinamics G120 drive indicates a safety function trip due to a data monitoring discrepancy. This means the drive's internal safety features detected a mismatch between critical data points used to ensure safe operation.

The F01611 error code in your Siemens Sinamics G120 drive indicates a safety-related internal fault. This is a serious error that can potentially lead to unexpected drive behavior and safety hazards.

Possible Causes of F01611:

• Hardware malfunction: A faulty component within the G120 drive, such as a sensor or internal circuit board, could be causing the discrepancy between monitoring channels.
• Software glitch: In rare cases, a software bug within the drive's firmware might lead to misinterpretations of monitoring data.
• Incorrect wiring (for Safety Integrated functions): If you're using the "Safety Integrated" features of the G120 drive, ensure all safety-related sensors and devices are wired correctly according to Siemens specifications.

Recommended course of action:

1. Contact a qualified Siemens technician: Due to the safety implications, it's strongly advised to seek help from a qualified technician who is familiar with Siemens Sinamics G120 drives and safety protocols.
2. Do not attempt to reset or clear the fault yourself: Resetting the fault without proper diagnosis could lead to further safety risks.
3. The technician will likely perform the following:

• Analyze the fault code and any additional information stored in the drive's memory.
• Inspect the G120 drive hardware for potential malfunctions.
• Verify the wiring of safety-related components (if applicable).
• Update the drive's firmware to the latest version if necessary.
• Perform a comprehensive safety system check to ensure the drive operates safely after repairs.