Safety related holding system: brake check missing

What does F3123 mean?

A required safety-related brake check for the holding system was not performed or detected. Regular checks are vital to ensure the reliability of mechanical brakes used for safety. If a check is missing, the system cannot guarantee the brake's integrity, leading to a safety fault and potentially hazardous conditions.

• Brake check command not issued by the safety controller
• Feedback signal for brake check completion is missing or incorrect
• Brake check parameters are misconfigured
• External inhibit preventing the brake check from running
• Internal safety module communication error

Click steps to track your progress.

1. 1

   Verify drive parameters configured for the safety brake function and brake monitoring against machine documentation and Rexroth specifications.

2. 2

   Inspect all motor power and brake control cabling for damage, proper routing, and secure connections at both the IndraDrive and motor terminals.

3. 3

   Measure voltage at the motor brake terminals during commanded brake states (e.g., brake engaged/disengaged) to confirm proper activation signals from the drive.

4. 4

   Check the functionality and wiring of any external safety relays or contactors involved in the brake control circuit that interface with the drive.