Siemens · DCM
An error has occurred during the power unit's booting process, preventing it from starting up correctly. The fault value (r0949) is provided for internal Siemens troubleshooting. This issue can cause the drive to remain offline or fail to respond to commands.
Click steps to track your progress.
Perform a complete power cycle of the drive system (main power off/on) to clear any transient boot issues.
Check the connections between the control unit and the power unit (e.g., Drive-Cliq cable) for secure fit and damage.
Attempt a firmware update for the power unit using a valid firmware image (e.g., via SD card or engineering software).
Record the fault value displayed in parameter r0949 for reference when contacting technical support.
If possible, swap the power unit with a known good, compatible unit to rule out a hardware defect in the power unit itself.