Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 300753

Siemens 300753 - Axis drive rotor position identification current less than minimal

The current set in MD1019: $MD_CURRENT_ROTORPOS_IDENT (rotor position identification current) that is smaller than the minimum value permissible for the motor 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.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

300753

Siemens 300753 - Axis drive rotor position identification current less than minimal

Axis drive rotor position identification current less than minimal

The current set in MD1019: $MD_CURRENT_ROTORPOS_IDENT (rotor position identification current) that is smaller than the minimum value permissible for the motor 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.

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

  • The current set in MD1019: $MD_CURRENT_ROTORPOS_IDENT (rotor position identification current) that is smaller than the minimum value permissible for the motor

Troubleshooting Steps

  1. 1The current set in MD1019: $MD_CURRENT_ROTORPOS_IDENT (rotor position identification current) that is not smaller the permissible minimum value (40% for non-Siemens synchronous linear motor (SLM)).
  2. 2Possibly, a larger power section must be used.
  3. 3If allowed with the motor used, hide the error by setting bit 5 in MD 1012: $MD_FUNCTION_SWITCH (function switch).
  4. 4Caution: Motors with a low saturation response (e.g. 1FN3 linear motors) might react to very low identification currents with misorientation.
  5. 5This can lead to uncontrolled movements.
  6. 6Clear alarm with the RESET key in all channels. Restart part program. 2-741

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