Siemens SINUMERIK codes
AxisMD

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 300757

Siemens 300757 - Axis drive adaption factor of torque limit invalid

This alarm occurs when the torque adaptation factor in MD 1191 exceeds the format limit, often due to incorrect parameter settings or program values. Fix it by adjusting the value within acceptable limits.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

300757

Siemens 300757 - Axis drive adaption factor of torque limit invalid

Axis drive adaption factor of torque limit invalid

The torque adaptation factor MD 1191: $MD_TORQUE_LIMIT_ADAPT_SERVO (adaptation of servo limit torque) exceeds the format limit Control reaction: NC not ready. The NC switches to follow-up mode. Channel not ready. NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Channel not ready.

Root Cause Summary

This alarm occurs when the torque adaptation factor in MD 1191 exceeds the format limit, often due to incorrect parameter settings or program values. Fix it by adjusting the value within acceptable limits.

Safety

  • Drive/power/encoder circuit: hazardous voltages may remain in the DC link after power-off. Lock out / tag out, wait for discharge per the drive documentation, and use qualified personnel only.

Causes and Fixes

  1. 1

    SAFETY FIRST - Stop machine and lock out

    Ensure machine is in a safe state, stopped, and locked out before accessing parameters. Note the axis and drive number in the alarm message.

  2. 2

    Verify MD 1191 value

    Access machine data MD 1191 and check the torque limit adaptation factor is within the specified format limit (typically 0.1 to 10.0).

  3. 3

    Correct and test safely

    Adjust the value within valid range, save changes, clear the alarm. Perform dry run test before normal operation.

DIY Feasiblehigh confidence

Call a technician if:

  • ·If the alarm persists after verifying and correcting MD 1191
  • ·If program adjustments do not resolve the issue

Prevention

  • Validate torque limit values before setting them
  • Use simulation to catch parameter errors early

Common Mistakes

  • Overlooking dynamic torque adjustments in the program
  • Setting values without checking format limits

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