YASKAWA SGMAH, User Manual

Page: 321 / 488

Sigma II User’s Manual Chapter 7: Using the Digital Operator
7 - 51
Manually Adjusting the Motor Current Detection Offset
Follow the procedure below to manually adjust the current detection offset.
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 Arrow or Right Arrow key to select the digit.
Press the Up Arrow or Down Arrow 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) current detection offset adjustment mode
5. Press the Left Arrow or Right Arrow key to display the current detection
data. Pressing the Left Arrow or Right Arrow key again will return to the
display shown above in step 3 or 4.
6. Press the Up Arrow or Down Arrow key to adjust the offset. Carefully
adjust the offset while monitoring the torque reference monitor signal.
• When making manual adjustments, run the motor at a speed of approximately 100rpm, and adjust
the Motor Current Detection Offset until the torque ripple, observed with the analog monitor, 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 .
IMPORTANT
DSPL/SET Key
Displayed
Alternately
Data Display
Left Cursor Key
(Right Cursor Key)
Displayed
Alternately
Data Setting Change