Omron OMNUC W Series User Manual page 351

Operation
Note If adjusting the Servomotor current detection offset, first try performing automatic adjustment
(Fn00E). Only attempt manual adjustment if the torque ripple is still large after performing auto-
matic adjustment.
System Check Mode
Servomotor current
detection offset manual
adjustment
Flowchart for Servomotor Current Detection Offset Manual Adjustment
Note 1. Adjust the offset while monitoring the torque command monitor (current monitor)'s waveform.
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1 s min.
1 s min.
Rotate Servomotor at approx. 100 r/min. (with no load).
Adjust phase-U offset 10° in the best direction for torque ripple
Adjust phase-V offset 10° in the best direction for torque ripple.
Torque ripple does not improve even if adjusted in both + and -- directions?
Adjust phase-U offset 1° in the best direction for torque ripple.
Adjust phase-V offset 1° in the best direction for torque ripple.
Characteristics OK?
End
Phase selection (Cu1
= U phase)
1 s max.
U-phase (CU1)
offset adjustment
Chapter 4
1 s min.
Phase selection (Cu2
= V phase)
1 s max.
V-phase (CU2)
offset adjustment
1 s min.
4-135