6.2.5.2.2 Standard synchronous motor
A magnetizing current can be preset in 2 identically working objects at synchro-
nous motor: dr08 (only positive values) and ds55. The settings are added.
A positive magnetizing current has no influence for the torque buildup at synchro-
nous motors if the inductance of the d and q axis is equal.
As standard, no settings need to be made here.
Possible exceptions:
▪ Increase of the motor losses at operation without braking resistor.
▪ Checking of the system position (the motor may not offer torque through cur-
rent injection in the d-axis).
A negative magnetizing current is required in the field weakening. This current is
automatically given via the maximum voltage controller (=> Chapter 6.2.10 Field
weakening).
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