What causes Siemens SINUMERIK alarm 22011?

Programming error in the part program related to the spindle function. Spindle configuration parameter mismatch for the commanded operation. Spindle encoder signal fault preventing speed or position control. Spindle drive fault affecting the ability to execute the commanded function. Gear stage or spindle mode conflict with the commanded function.

How do I fix Siemens SINUMERIK alarm 22011?

1. Review the program block that triggered the alarm for spindle command errors. 2. Check the SINAMICS spindle drive diagnostics for fault codes. 3. Verify spindle encoder signal quality in the diagnostics screen. 4. Review spindle configuration parameters for the commanded gear stage and mode. 5. Consult the Siemens SINUMERIK alarm manual for alarm 22011 specific remedy.

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Siemens SINUMERIK Controller

Spindle · Intermediate · 30-120 minutes

Alarm 22011

Siemens 840D 22011 - Channel block spindle change to programmed gear stage not

Alarm 22011 occurs when the Repos module attempts a gear stage change to a previously programmed gear stage, but the spindle is not in speed control mode during block deselection. This typically happens when DryRun, ProgramTest, or SearchRunByProgTest functions are inactive and the spindle operates as a slave axis without active speed control.

Siemens SINUMERIKSpindleIntermediate30-120 minutes

22011

Siemens 840D 22011 - Channel block spindle change to programmed gear stage not

Channel block spindle change to programmed gear stage not

Root Cause Summary

Alarm 22011 occurs when the Repos module attempts a gear stage change to a previously programmed gear stage, but the spindle is not in speed control mode during block deselection. This typically happens when DryRun, ProgramTest, or SearchRunByProgTest functions are inactive and the spindle operates as a slave axis without active speed control.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Navigate to Diagnostics > Parameters > Machine Data and verify MD20110 (SpindleControlType) is set to 1 (speed control) for the affected spindle. If set to 0 (position control only), the gear change cannot proceed.
Changing spindle control type may affect program execution and machine safety interlocks.
2
Check MD20107 (SpindleIsSlaveAxis) - if set to 1, the spindle is configured as a slave axis and cannot perform independent gear changes during Repos operations without explicit master control.
3
Verify the M-code sequence in the NC program: ensure M3 or M4 (spindle start in speed control) is executed before the gear change block, and confirm the spindle has reached target speed via parameter MD20118 (SpindleSpeedMonitoringTime).
4
In the HMI, select Diagnostics > Spindle > Actual Values and confirm spindle status shows 'Speed Control Active' before attempting manual gear stage change via Repos.

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