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Entry type: FAQ Entry ID: 109779388, Entry date: 05/12/2020

SINAMICS DC Master: Safety note for current controller optimization P50051 = 25

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You have set the Speed controller actual value selection to "EMF actual value internal" (p50083 = 3) and started the optimization of the Armature current control (p50051= 23 or 25). However, this breaks off with F60038.

Supplement to Chapter 8.8 Drive optimization of the Operating Instructions (Issue 12/2018, see Article 109763558):

  • The optimization run for the anchor current controller (p50051=25 or 23) may only be carried out with EMF control (p50083=3) when the motor is locked and monitored.
  • The emergency stop function must be tested and be active, the specifications in chapter 8.8 of the operating instructions, in particular the locking of the anchor, must be observed.
  • If the motor starts to rotate during the optimization run, the emergency off function must be triggered.

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