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A139 alarm in siemens master drive

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Cause : Incorrect parameterization PosTrack MotorEnc- This alarm is tripped only for rotary axis of motor encoder. The bit width of the product of the gear denominator (U810.2 * P116.2) must not be greater than the difference of the 32 bit data width of the flipflop and the multiturn resolution of the encoder.

  • In accordance with the adjacent formula reduce the gear denominator of P116 and/or U810 respectively.
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