Program features 61
requires the absolute position of the rotor flux in order to control motor torque
accurately.
The autophasing routine is performed at every start.
Note: The motor always turns when it is started as the shaft is turned towards the
remanence flux.
Bit 4 of 06.21 Drive status word 3 indicates if the rotor position has already been
determined.
Autophasing modes
ACS180 uses turning mode of Autophasing.
The turning mode is the most robust and accurate method. In turning mode, the
motor shaft is turned only in one direction and the angle is small.
The drive is capable of determining the rotor position when started into a running
motor.
An autophasing fault (3385 Autophasing) could be caused by, for example, the
following:
• The motor is already turning before the autophasing routine is started
• The motor shaft is locked
• The wrong motor type is selected in 99.03 Motor type
• Motor ID run has failed.
Settings and diagnostics
Parameters 06.21 Drive status word 3 and 99.13 ID run requested.
Events: -
ACS180 FW.book Page 61 Tuesday, March 9, 2021 2:25 PM
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