Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
6. Available Reference Values
KSW-39
6.4 PID Controller
Information that you will find in
this section …
This section gives you information on:
• when to use the PID controller
• how the PID controller is set up
• and how to set the PID controller
When to use the PID controller …
The PID controller is used to calibrate reference values and actual values via a PID
structure (control). You can use this to implement tension, pressure, or filling level
control, for instance.
Structure of the PID controller
The PID controller must be supplied with a reference value and an actual value (Figure
6-17). A control error is calculated from reference value and actual value which is then
applied to the PID controller (Figure 6-22). You can select and use the result of the PID
structure in D30, D31, or D33.
(-1)
G332
G300
G180
G333
G100
G133
G210 Bit 2
0%
0
AE1
1
AE2
AE3
BE1
BE1
BE13
...
G11
+
-
D34
0
1
2
D53.5
n
SW
D52.5
D54.4
D54.5
D51.5
G132
G232
0%
AE1
AE2
AE3
D53.4
n
SW
D52.4
D51.4
Figure 6-17 PID controller: Reference value-actual value comparison
PID contr.,
control error
Technology
actual value
Status of
technolo
gy
RV
Status of
negation of
technology RV
Technology
actual value,
low pass
PID
RV selecto
r
Source of
technolo
gy
RV
Preset RV
Motorized pot
Control byte,
technology
controller
Read parameter
entered in G12
Source of
negation of
technolo
gy
RV
Source,
technology
actual value
Technology
reference value
Control erro
r
Ref. value for
forward feed,
torque control
RV
RV