Automation Direct DURApulse GS4 User Manual page 524

Appendix F: PID Control
t e
uninG xamPle for
1) Signal Gain and Instability are increasing with initial PID settings as shown:
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
2) Increase the Integral Time (P7.14) and the Derivative Value (P7.15).
This tuning results in just one Overshoot and one Undershoot.
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
3) Increase the Derivative Value (P7.15).
This fine tuning results in the Setpoint being reached and maintained with stability in the
system.
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
Page F–8
PiD C
ontrol
K
K
K
Process Variable
1 2 3 4 5 6
K
K
K
Process Variable
1 2 3 4 5 6
K
K
K
Process Variable
1 2 3 4 5 6
DuRA
pulse
1.8
= 5
p
1.6
= 0.3
i
= 0 1.4
d
1.2
Set-
1
point
0.8
0.6
0.4
0.2
0
7 8 0 1
= 5
p
= 3
i
= 1.3
d
Set-
point
7 8
= 5
p
= 3
i
= 3
d
Set-
point
7 8
GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
K
p
K = 3
i
K = 0
d
Process Variable
2 3 4 5 6
= 5
Set-
point
7 8