YASKAWA Sigma-V Series User Manual page 83

(4) Manual Offset-adjustment Operation Flowchart
Rotate the servomotor without connecting a
machine (no-load) at about 100 min -1.
Adjust the phase-U offset about by 10 in the direction that
the torque ripple is reduced.
Adjust the phase-V offset about by 10 in the direction that
the torque ripple is reduced.
No
The torque ripple is still not reduced after the offset was
adjusted in negative and positive directions?
Adjust the phase-U offset by 1 in the direction that the
torque ripple is reduced.
Adjust the phase-V offset by 1 in the direction that the
torque ripple is reduced.
Note: 1. Perform the offset adjustment monitoring the waveform of torque reference monitor.
2. Adjust the offset by 10 for rough adjustment, and by 1 for fine adjustment. Adjust-
ment by 5 may be performed between the rough and fine adjustments.
3. Adjust the phase-U and-V offsets alternately and equally.
Yes
No
Good characteristics?
Yes
End
3.3 Operation Method for Each Utility Function
9 3
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