Autophasing - ABB ACS880 Manual

Start-up 37
If 98.08 is greater than 1.2 or smaller than 0.8, a new value can be calculated for 99.07
Motor nominal voltage, and the ID run repeated.
The following image shows the user motor parameters as calibrated by the ID run.

Autophasing

Autophasing is a measurement routine that determines the angular position of the magnetic
flux of a permanent magnet synchronous motor. The motor control requires the absolute
position of the rotor flux to accurately control the motor torque. In closed-loop control,
autophasing is performed automatically as part of the Normal, Reduced or Advanced ID
run. It can also be selected as a stand-alone routine in parameter 99.13 ID run requested.
At the end of the autophasing routine, the offset between the measured rotor position and
the rotor flux is written into parameter 98.15 Position offset user.
With high-speed motors, it is recommended to use enhanced autophasing mode by setting
service-level parameter 227.32 ID run feature testing to the value of 3 temporarily.
To start autophasing, set 99.13 ID run requested to Autophasing. Give a start command
from Drive Composer pro in local control mode. The routine will rotate the motor in both
directions to find the angle offset. The sample diagram below shows the behavior of selected
drive signals during an enhanced autophasing routine.