Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 300724

Siemens 300724 - Axis drive number of pole pairs invalid

FDD: The configured number of pole pairs in the drive MD 1112: $MD_NUM_POLE_PAIRS is outside the permissible range limits. MSD: Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENCY (rated motor frequency) or MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed) is not correct 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.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

300724

Siemens 300724 - Axis drive number of pole pairs invalid

Axis drive number of pole pairs invalid

FDD: The configured number of pole pairs in the drive MD 1112: $MD_NUM_POLE_PAIRS is outside the permissible range limits. MSD: Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENCY (rated motor frequency) or MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed) is not correct 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.

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.

Common Causes

  • FDD: The configured number of pole pairs in the drive MD 1112: $MD_NUM_POLE_PAIRS is outside the permissible range limits.
  • MSD: Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENCY (rated motor frequency) or MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed) is not correct

Troubleshooting Steps

  1. 1Please inform the authorized personnel/service department.
  2. 2For standard motors: Reset the drive (delete the bootfile) and repeat the startup.
  3. 3For third-party motors: Check and, if necessary, refer to the motor data sheet to correct MD 1112: $MD_NUM_POLE_PAIRS (number of motor pole pairs).
  4. 4Switch control OFF - ON. 2-727

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