W.E.ST. PQ-132-U, Technical Documentation Manual

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Page 26 of 34 PQ-132-U 05.06.2020
5.5.2 C (PID control parameters)
Command Parameter Unit Group
Cp:i x
p= 1|2(Parametersatz)
i= P|I|D|D_T1|I_ACT
:P x= 1… 10000
:I x= 0… 30000
:D x= 0… 1200
:D_T1 x= 5… 1000
:I_ACT x= 0… 10000
0,01
0,1 ms
0,1 ms
0,1 ms
0,01 %
STD
The control function will be parameterized via this command.
The P, I and D gain are similar to a standard PID controller. The T1 factor is used for the D-gain in order to
suppress high-frequency noise.
I_ACT controls the integrator function. To reduce pressure overshoots, an activation point for the integrator
can be programmed via the I_ACT value. The integrator is activated if the actual pressure is higher than the
programmed threshold.
The integrator function of the controller can be disabled in special cases by setting :I to zero.
w setpoint
scaling ramp
funktion
x1 actual value
skaling
-
0.. 10 V
4.. 20 mA
pressure controller
C(1|2):P P-Gain
C(1|2):I I-Gain
C(1|2):D D-Gain
C(1|2):D_T1 T1 filter or D-Gain
C(1|2):I_ACT Activating of the integrator
0.. 10 V
4.. 20 mA
C:P
C:I C:IC
w
x
C:D
C:T1
-
x2 actual value
skaling
0.. 10 V
4.. 20 mA
x1
x2
-
-10.. 10 V
Q Setpoint
LIM
MIN