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Using the Digital Operator
7.2.11 Adjusting the Motor Current Detection Offset
IMPORTANT
7
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J J Manually Adjusting the Motor Current Detection 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 r/min, and adjust the Opera-
tor until the torque monitor ripple is minimized. (Refer to Section 6.5 Analog Monitor.) Adjust the U-phase and
V-phase offsets alternately several times until these offsets are well balanced.
Hand-held Digital Operator
1. Press the DSPL/SET Key to select the auxiliary function mode.
2. Select the user constant Fn00F.
Press the Left or Right Cursor Key to select the digit.
Press the Up or Down Cursor Key to change the value.
3. Press the DATA/ENTER Key, and the display will be as shown below.
4. Press the DSPL/SET Key to switch between the U-phase (Cu1_0) and V-phase (Cu2_0) cur-
rent 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 moni-
toring the torque reference monitor signal.
7. When the current offset adjustment has been completed for the U-phase (Cu1_0) and V-
phase (Cu2_0), press the DATA/ENTER Key to return to the auxiliary function mode dis-
play.
This completes the manual adjustment of the motor current detection offset.
DSPL/SET Key
Displayed
Alternately
Left Cursor Key
(Right Cursor Key)
Data Display
Displayed
Alternately
Data Setting Change
7 -48
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