Yaskawa Large Capacity Sigma II Series - Manual (Page 271)

6.2 Applied Operation
6-51
6
„ Manually Adjusting the Motor Current Offset
Follow the procedure below to manually adjust the current detection offset.
When making manual adjustments, run the motor at a speed of approximately 100 min
-1
, and adjust
the Operator until the torque monitor ripple is minimized. (Refer to Section 5.5 Analog Monitor.)
Adjust the phase-U and phase-V offsets alternately several times until these offsets are well balanced.
Using the Hand-held Digital Operator
1. Press the DSPL/SET Key to select the auxiliary function mode.
2. Select the parameter Fn00F. Press the Left or Right Cursor Key to select the digit. Press
the Up or Down Cursor Key to change the number.
3. Press the DATA/ENTER Key. The following display will appear.
4. Press the DSPL/SET Key to switch between the phase-U (Cu1_0) and phase-V (Cu2_0)
current detection offset adjustment mode.
5. Press the Left or Right Cursor Key to display the current detection data. Pressing the
Left or Right Cursor Key again will return to the display shown in the above step 3. or 4.
6. Press the Up or Down Cursor Key to adjust the offset. Carefully adjust the offset while
monitoring the torque reference monitor signal.
7. When the current offset adjustment has been completed for the phase U (Cu1_0) and
phase V (Cu2_0), press the DATA/ENTER Key to return to the auxiliary function mode
display.
IMPORTANT
DSPL/SET Key
Displayed
alternately
Displayed
alternately
Left Cursor Key
(Right Cursor Key) Data Display
Data Setting Change