Operation
Liquiline CM442R/CM444R/CM448R
72
Hauser
Outputting the controller manipulated variable via the current output
Assign "U" to the output to which an actuator that can increase the measured value is
connected. Assign "Unipolar-" to the output to which an actuator that can decrease the measured
value is connected.
To output the manipulated variable of a two-sided controller, positive manipulated variables
and negative manipulated variables generally have to be output to different actuators, as most
actuators are able to influence the process in one direction only (not in both). For this purpose,
the instrument splits the bipolar manipulated variable y into two unipolar manipulated
variables, y+ and y-.
Only the two unipolar manipulated variable parts are available for selection for outputting to
modulated relays. If outputting the values via a current output, you also have the possibility of
outputting the bipolar manipulated variable y to one current output only (split range).
10.4.2 Alarm relay and optional relays
Outputting the status of a limit switch
Controller 1
Options
• Bipolar(only current outputs)
• U
• Unipolar-
Controller 2
Mathematical functions
All the mathematical functions can also be used as a data source and the
calculated value can be used as the measured value.
Function="LimitSwitch"
Function
Options
Info
Source of data
Options
• None
• Limit switch 1
• Limit switch 2
• Limit switch 3
• Limit switch 4
• Limit switch 5
• Limit switch 6
• Limit switch 7
• Limit switch 8
Factory setting
None
Select the limit switch via which the status of the relay is
to be output.
The limit switches are configured in the
"Setup/Additional functions/Limit switches" menu.
Measured valuedepending on theSource of data
Source of data
Measured value
Содержание Liquiline CM442R
Страница 2: ......
Страница 170: ...Liquiline CM442R CM444R CM448R 170 ...
Страница 171: ...Liquiline CM442R CM444R CM448R Endress Hauser ...
Страница 172: ...www addresses endress com ...