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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 101629 - Write access only in start-up state Power Section (p10=2).
This alarm occurs when attempting to modify Power Section parameters that require the system to be in start-up mode (p10=2). The drive control system protects critical power module parameters from being changed during normal operation to prevent unsafe conditions or system instability.
101629
Siemens 840D 101629 - Write access only in start-up state Power Section (p10=2).
Write access only in start-up state Power Section (p10=2).
Siemens SINUMERIK operator message 101629: Write access only in start-up state Power Section (p10=2). This is an informational message from the SINUMERIK control indicating a system status or operation result that may require operator action.
Root Cause Summary
This alarm occurs when attempting to modify Power Section parameters that require the system to be in start-up mode (p10=2). The drive control system protects critical power module parameters from being changed during normal operation to prevent unsafe conditions or system instability.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access the drive diagnostics and check current p10 value via 'Drive > Diagnostics > Parameters' menu.
- 2
Set the system to start-up mode by changing p10 to 2 (Start-up state) for the affected drive axis.
Setting p10=2 will disable drive operation temporarily. Ensure machine is in safe state before proceeding.
- 3
Make the required parameter changes to the power section parameters.
- 4
Return system to operational mode by setting p10=3 (RUN mode) and perform a power-on reset of the drive.
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Always verify with your machine manual or a certified technician before performing service procedures.