Speed Control Optimisation Active
Siemens · SINAMICS G120
What does A00542 mean?
This alarm indicates that the speed control optimization process (parameter P1960) is active or has been selected to run. This is a normal state when the drive is fine-tuning its speed control parameters to achieve optimal performance and responsiveness.
Common Causes
- Speed controller optimization (e.g., P1960) has been manually activated from the HMI or engineering software.
- The drive is configured to run automatic speed control optimization after specific parameter changes or a reset.
- Changes to mechanical load conditions, motor parameters (e.g., P0304), or control loop settings (e.g., P1460, P1470) have necessitated re-optimization.
- Internal tuning routines are being performed to improve dynamic response and speed accuracy.
Repair Steps & Checklist
Click steps to track your progress.
- 1
1. Allow the speed control optimization process (P1960) to complete its cycle; this is a normal tuning operation.
- 2
2. Ensure no external mechanical disturbances or abrupt load changes are occurring during the optimization process.
- 3
3. Monitor the optimization progress via relevant status parameters (e.g., r0002, r1961) on the HMI or engineering tool.
- 4
4. If the optimization fails or is stuck, cancel it (e.g., P1960=0) and manually adjust relevant speed controller parameters (e.g., P1460, P1462, P1470, P1472).
- 5
5. Verify the motor's actual speed feedback (e.g., r0021) is stable and accurate during the optimization attempt.