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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 101136 - MDx150 FIELDCTRL_GAIN could not be calculated
Alarm 101136 indicates that the servo control system could not calculate the field control gain (FIELDCTRL_GAIN) parameter in MD1150. This typically occurs when prerequisite machine data values are missing, incorrect, or when motor/drive configuration parameters create mathematical impossibilities in the gain calculation algorithm.
101136
Siemens 840D 101136 - MDx150 FIELDCTRL_GAIN could not be calculated
MDx150 FIELDCTRL_GAIN could not be calculated
Siemens SINUMERIK operator message 101136: MDx150 FIELDCTRL_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 101136 indicates that the servo control system could not calculate the field control gain (FIELDCTRL_GAIN) parameter in MD1150. This typically occurs when prerequisite machine data values are missing, incorrect, or when motor/drive configuration parameters create mathematical impossibilities in the gain calculation algorithm.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Check MD1102 (motor rated voltage), MD1103 (motor rated current), and MD1104 (motor rated power) are properly set and match motor nameplate data.
- 2
Verify MD1106 (motor inductance) and MD1107 (motor resistance) values are present and non-zero. Calculate if necessary using motor manufacturer specifications.
- 3
Execute drive optimization sequence or auto-tuning routine to automatically populate all required motor parameters.
Ensure machine is safe for motor movement during optimization.
- 4
Perform a power-off reset after correcting machine data values, then re-enable drives to trigger recalculation.
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Always verify with your machine manual or a certified technician before performing service procedures.