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5.3
Controller
Controller structure
The controller structure is defined via the parameters
Example: Setting for PI controller
Symbol
Notes
C113
Controller type and assignment of the controller outputs to the physical
outputs 1+2
Outputs in fault condition
C116
The switching states of the outputs are defined here in the event of over/underrange, probe
break/short circuit or display overflow.
v Chapter 7
C118
Assignment of the outputs
Only for Type 702042/43/44; overwrites the assignment of
Pb:1
Proportional band 1 (controller output 1)
Proportional band 2 (controller output 2)
Influences the P action of the controller. If
Pb:2
dt
Derivative time
Influences the D action of the controller. If
rt
Reset time
Influences the I action of the controller. If
Cycle time 1 (controller output 1)
Cy 1
Cycle time 2 (controller output 2)
The cycle time has to be selected so that the energy supply to the process is virtually
Cy 2
continuous, while not subjecting the switching elements to excessive wear.
→
Pb .1
=120,
vpage 32
vpage 33
vpage 33
vpage 36
vpage 36
vpage 36
Pb
dt
rt
,
and
.
dt
rt
=0sec,
=350sec
C113
vpage 36
Pb
=0, the controller structure is not effective.
dt
=0, the controller has no D action.
rt
=0, the controller has no I action.
C113
(controller type as
)
19
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