Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 300771

Siemens 300771 - Axis drive asynchronous mode: converter frequency invalid

Only a converter frequency of 4 kHz or 8 kHz is permitted in asynchronous mode (selected by MD 1465 < MD 1146). - Modify MD 1465: $MD_SWITCH_SPEED_MSD_AM (switchover speed MSD/AM) - Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed) The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready) 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

300771

Siemens 300771 - Axis drive asynchronous mode: converter frequency invalid

Axis drive asynchronous mode: converter frequency invalid

Only a converter frequency of 4 kHz or 8 kHz is permitted in asynchronous mode (selected by MD 1465 < MD 1146). - Modify MD 1465: $MD_SWITCH_SPEED_MSD_AM (switchover speed MSD/AM) - Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed) The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready) 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

  • Only a converter frequency of 4 kHz or 8 kHz is permitted in asynchronous mode (selected by MD 1465 < MD 1146).
  • - Modify MD 1465: $MD_SWITCH_SPEED_MSD_AM (switchover speed MSD/AM) - Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed) The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready)

Troubleshooting Steps

  1. 1Please inform the authorized personnel/service department.
  2. 2Modify MD 1100: $MD_PWM_FREQUENCY (pulse width modulation frequency) or deselect AM mode (make the value in MD 1465: $MD_SWITCH_SPEED_MSD_AM less than the value in MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED.
  3. 3Clear alarm with the RESET key in all channels. Restart part program

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