Siemens · SINAMICS V70 Drives
This alarm is issued after a defective PPU is replaced, indicating that the new PPU and CF card have new serial numbers. This may require specific activation procedures.
Click steps to track your progress.
Refer to 'Case 2 of CNC lock function in Section "Option activation failure after PPU replacement (Page 25)"' for detailed instructions on how to clear this alarm.
Ensure all components are correctly seated after replacement.
Contact the machine manufacturer or dealer for specific activation procedures if the issue persists.