YASKAWA SGD7S-R70A20A023F40B, Product Manual

Page: 71 / 342

3.6 Setup Procedure
3.6.7 Gain Adjustment
3-21
3
Pr
essur
e Feedback Contr
ol

Gain Adjustment Flowchart
A gain adjustment flowchart for pressure feedback control 1 is provided below.
S tart of Adju s tment
S et the parameter s to
the default s etting s .
Check the
re s pon s e waveform.
Vibration
No vibration
Decrea s e Pn452 (Pre ss ure Feedback
Loop Proportional Gain 2).
I s Pn452
(Pre ss ure Feedback Loop
Proportional Gain 2)
s et to 0?
No
Ye s
Increa s e Pn442 (Pre ss ure Feedback
Loop Integral Time).
Check the
re s pon s e waveform.
Vibration or over s hooting
No vibration
Check the
re s pon s e waveform.
No vibration
S et Pn442 (Pre ss ure Feedback Loop
Integral Time) to the optimum value.
Decrea s e Pn442 (Pre ss ure Feedback
Loop Integral Time) by 0.1 m s .
Increa s e Pn452 (Pre ss ure Feedback
Loop Proportional Gain 2) by 10%.
Vibration or over s hooting
S et Pn452 (Pre ss ure Feedback
Loop Proportional Gain 2)
to the optimum value.
A
Adju s tment of Pn442
(integral time)
Adju s tment of Pn452
(proportional gain)