CHAPTER 3 MAINTENANCE
2. Confirming the Drive Section
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2. Confirming the Drive Section
(1) Confirming the servo parameters
Confirm the servo parameters after setup and confirmation of the wiring, etc.
1) Confirm that the servo parameter data (machine specifications, servo system specifications) is
correct.
The suitability of the amplifier type, control method, motor end detector, machine end detector
and motor related to the servo system can be confirmed by referring to the SERVO MONITOR
screen.
2) Confirm that the correct parameters are set for the motor used.
(2) Adjusting the servo parameters
The following three servo parameters are generally used to adjust the drive section system. When
changing this parameter data, do so one or two increments at a time. Do not change the
parameter value greatly all at once.
1) PGN1 : Position loop gain
Standard value: 33
While this value is usually set to 33, it is lowered to approx. 25 when overshooting in a
closed loop system. Set this parameter as common for all axes.
2) VGN : Speed loop gain
Standard value: 150
Raising this value increases the responsiveness. (Max. value: 250)
3) VIA
: Speed loop advance compensation
Standard value: 1364
Raising this value increases the responsiveness.
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