Siemens SINUMERIK codes
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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 301702

Siemens 301702 - Axis drive track inversion incorrect

With rotary spindles without EnDat interface operating with enhanced controller modules, the track inversion (MD_1011.0=1) must not be switched on. Otherwise this error is triggered. Modify MD 1011: $MD_ACTUAL_VALUE_CONFIG (actual value sensing configuration IM) Control reaction: Mode group not ready. Channel not ready. NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

301702

Siemens 301702 - Axis drive track inversion incorrect

Axis drive track inversion incorrect

With rotary spindles without EnDat interface operating with enhanced controller modules, the track inversion (MD_1011.0=1) must not be switched on. Otherwise this error is triggered. Modify MD 1011: $MD_ACTUAL_VALUE_CONFIG (actual value sensing configuration IM) Control reaction: Mode group not ready. 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.
  • Spindle hazard: ensure the spindle is at standstill before working near it; follow lockout/tagout procedures.

Common Causes

  • With rotary spindles without EnDat interface operating with enhanced controller modules, the track inversion (MD_1011.0=1) must not be switched on.
  • Otherwise this error is triggered.
  • Modify MD 1011: $MD_ACTUAL_VALUE_CONFIG (actual value sensing configuration IM)

Troubleshooting Steps

  1. 1Please inform the authorized personnel/service department.
  2. 2With rotary spindles without EnDat interface operating with enhanced controller modules, the track inversion must be performed by soldering the A and B tracks differently: A <-> B and A* <-> B*
  3. 3Switch control OFF - ON

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