Controller Output Structures (S2, S61 To S68); S2 = 0: Continuous (K) Controller - Siemens SIPART DR22 Manual

Manual
In controlled systems of the 1st order a Pi or PID controller design cannot be implemented ac-
cording to the amount optimum, in systems of 2nd order a PID controller design cannot be imple-
mented because in these cases Kp goes to 1. A controller design is made in which the ratio
of system time constant to control circuit constant is 3 (S58 = 1) or 10 (S58 = 2).
After completion of adaptation the previously active old parameters (identified by .o) and the
newly determined parameters (identified by .n) can be read in the parameterization mode AdAP.
The new parameters for Pi-controllers and for PID-controllers are offered.
In addition the determined line order 1 to 8 is displayed as a suffix to the Pi or PID identification.
The selected parameters **.0, **.n Pi.* or **.n PID.* (** = parameter name, * = line order 1 to
8) can be changed and accepted optionally.
The operating technique of the adaptation procedure is described in chapter 3.3.3, page 175,
the commissioning explained in chapter 4.5, page 220.
1.5.6

Controller output structures (S2, S61 to S68)

Three different controller output structures are connected after the controller I depending on the
structrue switch S2:
S2=0 K-controller
S2=1 S-controller with internal feedback
S2=2 S-controller with external feedback
1.5.6.1 S2 = 0:
(Fig. 1-56, page 100 and fig. 1-57, page 101)
For activating P-action usually pnemumatic final control elements or as a master controller in
cascades.
In the K-controller the automatic manipulated variable ya of the controller I can be processed
directly without further conversion. The manipulated variable y is followed by two split
range-outputs y1 and y2 for 2 actuator operation. The manipulated variable y is divided into two
individual manipulated variables adjustable by the parameters Y1 and Y2 (structuring mode oFPA).
Via S65 you can select the split range functions rising -- falling (y1 actuator heating -- y2 actuator
cooling) or rising -- rising (y1 actuator control range 1 -- y2 actuator control range 2).
SIPART DR22 6DR2210
C79000-G7476-C154-03
Continuous (K) controller
1 Technical Description
1.5 Functional description of the structure switches
1.5.6 Controller output structures (S2, S61 to S68)
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