Burkert 8630 Operating Instructions Manual page 131

X
Xd
Y
Kp•Xd
Step response of the PID controller
Fig. 8.4: Step response and rise response of the PID controller
Realised PID controller
D component with delay:
In the Positioner Top Control 8630, the D component is realised with a delay T.
dY
Function: T
dt
Superposition of P, I and DT components
Fig. 8.5: Superposition of P, I and DT components
Top Control Positioner
t
D component
D-Anteil
I Component
I-Anteil
P Component
P-Anteil
t
Nachstellzeit Tn
Reset time Tn
dXd
+ Y = Kd
dt
X
Xd
Y
Xd
T
T
X
Y
Vorhaltzeit Tv
Derivative action time
Tv
Rise response of the PID controller
t
t
t
I-Anteil
I component
D component
D-Anteil
P-Anteil P component
t
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