Proportional Gain (P); Integral Time (I) - Delta C2000 series User Manual

R(L1)
S(L2)
T(L3)
1. Pr.00-04 is set to 10 (Display PID analog feedback signal value (b) (%))
2. Pr.01-12 Acceleration Time will be set as required
3. Pr.01-13 Deceleration Time will be set as required
4. Pr.00-21=0 to operate from the digital keypad
5. Pr.00-20=0, the set point is controlled by the digital keypad
6. Pr.08-00=1 (Negative PID feedback from analog input)
7. ACI analog input Pr. 03-01 set to 5, PID feedback signal.
8. Pr.08-01-08-03 will be set as required
8.1 If there is no vibration in the system, increase Pr.08-01(Proportional Gain (P))
8.2 If there is no vibration in the system, reduce Pr.08-02(Integral Time (I))
8.3 If there is no vibration in the system, increase Pr.08-03(Differential Time(D))
 Refer to Pr.08-00 to 08-21 for PID parameters settings.

Proportional Gain (P)


Settings
 It is used to eliminate the system error. It is usually used to decrease the error and get the faster
response speed. But if setting too large value in Pr.08-01, it may cause the system oscillation and
instability.
 If the other two gains (I and D) are set to zero, proportional control is the only one effective.

Integral Time (I)


Settings
 The integral controller is used to eliminate the error during stable system. The integral control
doesn't stop working until error is 0. The integral is acted by the integral time. The smaller integral
time is set, the stronger integral action will be. It is helpful to reduce overshoot and oscillation to
make a stable system. At this moment, the decreasing error will be slow. The integral control is
often used with other two controls to become PI controller or PID controller.
 This parameter is used to set the integral time of I controller. When the integral time is long, it will
have small gain of I controller, the slower response and bad external control. When the integral
time is short, it will have large gain of I controller, the faster response and rapid external control.
no fuse breaker
(NFB)
R(L1)
S(L2)
T(L3)
analog si gnal common
0.0~500.0%
0.00~100.00 sec
0.00: Disable
Chapter 12 Description of Parameter SettingsC2000 Series
water pump
U(T 1)
IM
V(T2)
3~
W(T 3)
F eedback 4-20mA
cor responds
0-10bar
ACI/A VI
(4- 20mA /0- 10V )
DC
- +
ACM
137
throttle
pressure
sensor
Factory Setting:80.0
Factory Setting:1.00