Reference Offset Adjustment - YASKAWA E-V Series User Manual

5.3.2 Reference Offset Adjustment

In speed control, the servomotor may move at a very low speed with an analog voltage reference of 0 V. This
occurs because the reference voltage of the host or external circuit has a slight offset of a few millivolts.
If the servomotor moves at a very low speed, the offset needs to be eliminated using the offset adjustment
function.
Use either automatic adjustment or manual adjustment. Automatic adjustment uses the automatic adjustment
parameter for analog (speed and force) reference offset (Fn009). Manual adjustment uses the manual adjust-
ment parameter for speed reference offset (fn00A).
(1) Automatic Adjustment of the Speed Reference Offset
The automatic adjustment of the offset automatically measures the amount of offset and adjusts the reference
voltage.
Reference
voltage
Offset
Speed
reference
After completion of the automatic adjustment, the amount of offset is stored in the SERVOPACK.
Adjust the speed reference offset automatically using the following steps.
Automatic
offset
adjustment
The speed reference offset must be automatically adjusted with the servo OFF.
5.3 Operating Using Speed Control with Analog Voltage Reference
Reference
voltage
Speed
reference
Offset automatically
adjusted in SERVOPACK.
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