Monitoring of safe reduced speed during switchover

What does F511 mean?

The DIAX04 SSE-03VRS drive detected a violation during the monitoring of safe reduced speed while switching between different safety functions or operational states. This means that during a transition, the speed exceeded the configured safe reduced speed limit, compromising the safety integrity of the system. The drive faults to prevent unsafe speed levels during critical transitions.

• The motor speed temporarily exceeded the safe reduced speed limit during a transition between safety functions or operational modes.
• Incorrectly configured deceleration ramps or transition times for safety functions (e.g., S-0-0092) in the DIAX04 SSE-03VRS drive.
• Timing issues or delays in the activation/deactivation of safety inputs during a switchover.
• Faulty encoder or speed feedback system providing inaccurate speed data during the transition.
• External force or mechanical inertia causing an overshoot during speed reduction.

Click steps to track your progress.

1. 1

   Review the deceleration ramps and transition parameters for all involved safety functions and operating modes in the DIAX04 SSE-03VRS drive (e.g., S-0-0092). Adjust for smoother transitions.

2. 2

   Monitor the actual motor speed during the switchover sequence using DIAX04 SSE-03VRS diagnostics to identify when and why the limit is exceeded.

3. 3

   Verify the integrity and timing of all safety input signals involved in the switchover process.

4. 4

   Inspect the motor encoder and its wiring for proper function and accurate speed feedback.

5. 5

   If the issue persists, consider performing a comprehensive safety logic test and trace during the switchover process to identify any hidden timing conflicts or misconfigurations.