Siemens SINUMERIK codes
AxisMD

axismd.ai

Siemens SINUMERIK Controller

Program/G-code · Intermediate · 30-120 minutes

Alarm 101133

Siemens 840D 101133 - MDx120 CURRCTRL_GAIN could not be calculated

Alarm 101133 indicates the CNC system cannot calculate the current controller gain (CURRCTRL_GAIN) parameter during automatic servo optimization or commissioning. This typically occurs when essential motor or drive parameters in MD1120 series are missing, incorrect, or inconsistent, preventing the control loop from being properly tuned.

Siemens SINUMERIKProgram/G-codeIntermediate30-120 minutes

101133

Siemens 840D 101133 - MDx120 CURRCTRL_GAIN could not be calculated

MDx120 CURRCTRL_GAIN could not be calculated

Siemens SINUMERIK operator message 101133: MDx120 CURRCTRL_GAIN could not be calculated. This is an informational message from the SINUMERIK control indicating a system status or operation result that may require operator action.

Root Cause Summary

Alarm 101133 indicates the CNC system cannot calculate the current controller gain (CURRCTRL_GAIN) parameter during automatic servo optimization or commissioning. This typically occurs when essential motor or drive parameters in MD1120 series are missing, incorrect, or inconsistent, preventing the control loop from being properly tuned.

Safety

  • Refer to Siemens documentation
  • Ensure qualified technician performs repairs

Causes and Fixes

  1. 1

    Access drive commissioning menu and verify MD1121 (rated motor current), MD1125 (stator resistance), and MD1130 (motor inductance) are populated with nameplate values.

  2. 2

    Compare entered motor parameters against motor nameplate data and manufacturer specifications. Correct any discrepancies.

  3. 3

    If motor data is unavailable, perform motor data identification routine via drive parameter p1900=1 (SINAMICS) or equivalent automatic identification.

    Ensure motor shaft is mechanically decoupled during identification to prevent unexpected motion

  4. 4

    Reset alarm with NC START and attempt servo optimization again. Verify CURRCTRL_GAIN is now calculated and displayed in MD1120.

Service Recommended confidence

Seeing Multiple Alarms?

Seeing another alarm with this one? Enter the code.

Get machine-aware diagnosis

AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.

Start free

Was this guide helpful?

Always verify with your machine manual or a certified technician before performing service procedures.