Endress+Hauser Liquiline System CA80CR, Руководство по эксплуатации

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Liquiline System CA80CR Operation
Hauser
115
Effective direction
Controller type="PID 1-sided"
Options
• Direct
• Reverse
Factory setting
Reverse
In what direction should the controller influence the
measured value?
• The measured value should increase as a result of
dosing (e.g. heating) --> "Reverse"
• The measured value should decrease as a result of
dosing (e.g. cooling) --> "Direct"
A 1-sided controller has a unipolar manipulated variable, i.e. it can only influence the process in one direction. If the
controller should increase the process value, set "Reverse" as the direction of action. The controller then becomes active
when the process value is too small (range A).
With the "Direct" effective direction, the controller acts as a "downwards controller". It becomes active when the process
value (e.g. the temperature) is too high (range B).
The red curve shows overlap between the curves of the two 1-sided controllers.
Controlled variable
Source of data Options
• Sensors
• Current inputs
• Fieldbus signals
• Binary inputs
• Mathematical functions
Factory setting
None
Specify the input or output which should be the source of
data for the controlled variable.
Measured value Options
• None
• Depends on theSource of
data
Factory setting
None
Specify the measured value that should be your control-
led variable.
The measured value you can select depends on the
option selected under "Source of data".
Setpoint Not available if a fieldbus has been selected as the
"Source of data"
Setpoint Range of adjustment and
factory setting
Depends on the "Source of
data"
Specify the setpoint for the controlled variable.
Path: Menu/Setup/Additional functions/Controller 1 or Controller 2
Function Options Info