Yaskawa Σ-V Series AC Servo Drives Rotational Motor MECHATROLINK-III - Manual (Page 225)

6 Utility Functions (Fn )
6-26
6.11
Manual Offset-Signal Adjustment of the Motor Current
Detection Signal (Fn00F)
Use this function only if the torque ripple is still high after the automatic offset-signal adjustment of the motor
current detection signal (Fn00E).
Note: The adjusted value is not initialized by executing the Fn005 function (Initializing Parameter Settings).
(1) Preparation
The following condition must be met to manually adjust the offset of the motor current detection signal.
• The write prohibited setting parameter (Fn010) must be set to Write permitted (P.0000).
(2) Operating Procedure
Use the following procedure.
1. Turn the motor at 100 min -1 .
2. In the SigmaWin+ main window, click Setup - Adjust Offset - Adjust the Motor Current
Detection Offset .
The following message will appear and ask if you want to continue. The message informs you that the
offset is set to the factory settings and that the SERVOPACK's performance might be affected if these set-
tings are changed.
If offset is adjusted incorrectly and then executed using this function, characteristics of
the servomotor performance could be affected.
Observe the following precautions when performing manual servo tuning.
• Run the servomotor at a speed of approximately 100 min -1 .
• Adjust the offset while monitoring the torque reference with the analog monitor until
the ripple of torque reference monitor's waveform is minimized.
• Adjust the phase-U and phase-V offset amounts alternately several times until these
offsets are well balanced.
MECHA