YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 200 / 373

How to use Digital Operation
12.2.8 Motor current detection signal offset adjustment
12-28
12.2.8 Motor current detection signal offset adjustment
The offset adjustment for motor current detection signal does generally require no customer
adjustment because the YSNC completed the adjustment before shipping. However, if you
need more precise accuracy, for example, in case that you recognize the torque ripple based
on the current offset is excessively large, or in case that you want to reduce the torque ripple
furthermore, this function is available.
This is the procedure for the automatic and manual adjustment for offset.
If you carelessly initiate this function, especially manual adjustment, that may deteriorate the feature.
When you determine the torque ripple is obviously large in comparison to other
SERVOPACK
, you
may execute the automatic adjustment for offset.
„ Motor current detection signal offset automatic adjustment
Use the following steps for the motor current detection signal offset automatic adjustment.
The automatic adjustment is available only when the main circuit power supply is turned on and simul-
taneously the servo drive is cut off.
1. On the axis selection mode, select the axis you want to operate.
2. Press the DSPL/SET key to select the auxiliary function execution mode.
3. Select the user constant Fn00E. Press the [LEFT] or [RIGHT] key to select the setting
digit. Press the [UP] or [DOWN] key until the value you want to set is displayed.
4. Press the [DATA/ENTER] key. The indication displays as below.
5. Press the [DSPL/SET] key. The following indication displays and the offset automatic
adjustment is executed.
IMPORTANT
Flashes for
a second.