Siemens · SINAMICS G120
The drive is not receiving setpoint values from the Control Panel within the specified telegram off time. This indicates a communication issue or incorrect timing between the control panel and the drive, causing a loss of command signals and controlled operation, thus preventing manual control.
Click steps to track your progress.
1. Re-seat the control panel (e.g., BOP-2 or IOP-2) firmly onto the drive unit's designated slot, ensuring good electrical contact.
2. Verify drive parameter P0700 (Command source) is correctly set to `1` (BOP/IOP) or the appropriate value for the specific control panel type.
3. Check the control panel display for any self-diagnostic errors, blank screens, or freezing, which might indicate a panel hardware fault.
4. Increase the telegram off time parameter (e.g., P0704 for basic panel communication) in increments of 50ms and observe if the fault clears.
5. Test with a known good control panel if available to rule out a faulty panel unit as the source of the issue.