Automation Direct DURApulse GS4 - Page 524

Page F–8
DuRApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Appendix F: PID Control
tuninG examPle for PiD Control
1) Signal Gain and Instability are increasing with initial PID settings as shown:
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
012345678
K
p
= 5
K
i
= 0.3
K
d
= 0
Process Variable
Set-
point
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
012345678
K
p
= 5
K
i
= 3
K
d
= 0
Process Variable
Set-
point
2) Increase the Integral Time (P7.14) and the Derivative Value (P7.15).
This tuning results in just one Overshoot and one Undershoot.
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
012345678
K
p
= 5
K
i
= 3
K
d
= 1.3
Process Variable
Set-
point
3) Increase the Derivative Value (P7.15).
This fine tuning results in the Setpoint being reached and maintained with stability in the
system.
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
012345678
K
p
= 5
K
i
= 3
K
d
= 3
Process Variable
Set-
point