BCSD-90/116 Digital Brushless AC Servo Drive system - Ref. 1809
Adjust the analog reference offset manually in the following procedure.
5.2.6. Offset-adjustment of Servomotor Current Detection Signal
Automatic servomotor current detection offset adjustment has performed at FAGOR before shipping.
Basically, the user need not perform this adjustment.
Perform this adjustment only if highly accurate adjustment is required for reducing torque ripple caused
by current offset.
This section describes the automatic and manual servomotor current detection offset adjustment.
Note:
• Offset-adjustment of the servomotor current detection signal is possible only while power is supplied
to the main circuit power supply and with the servo is OFF.
• Execute the automatic offset adjustment if the torque ripple is too big when compared with that of other
servodrives.
• If this function, particularly manual adjustment, is executed carelessly, it may worsen the
characteristics.
• Automatic Offset-adjustment of Servomotor Current Detection Signal
Adjust the servomotor current detection signal automatically in the following procedure.
1. Press the MODE key to select the utility function mode.
2. Press the INC or DEC key to select the utility function number Fn004.
3. Press the ENTER key to enter into the speed reference offset manual adjustment mode.
4. Turn ON the servo-ON signal, the display is shown as follows:
5. Hold the ENTER key for one second, the speed reference offset will be displayed.
6. Press the INC or DEC key to change the offset.
7. Hold the ENTER key for one second to return to the display in step 4.
8. Press ENTER key to return to the utility function mode display Fn004.
Thus, the speed reference offset manual adjustment is completed.
1. Press the MODE key to select the utility function mode.
2. Press the INC or DEC key to select the utility function number Fn005.
3. Press the ENTER key to enter into the automatic adjustment of the servomotor current detection
signal mode.
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