YASKAWA SGD7S-R70A20A023F40B Product Manual page 72

3.6 Setup Procedure
3.6.7 Gain Adjustment
3-22
A
No overshooting
Check the
response waveform.
Overshooting
Increase Pn450 (Pressure Feedback
Loop Differential Time) by 0.1 ms.
Did overshooting
decrease?
Yes
No
Decrease the value of Pn451 (Pressure Feedback
Loop Differential Filter Multiplier) by 10%.
Check the
response waveform.
Vibration
Was vibration
reduced?
Yes
No
Increase the value of Pn451 (Pressure Feedback
Loop Differential Filter Multiplier) by 10%.
Was vibration
reduced?
Yes
No
Set Pn451 (Pressure Feedback
Loop Differential Filter Multiplier)
to the optimum value.
End of Adjustment
Adjustment of Pn450
(differential time)
Adjustment of Pn451
(differential filter rate)
No vibration