Liquiline CM442/CM444/CM448 Operation
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10.4 Outputs
10.4.1 Current outputs
The basic version of the device always has two current outputs.
You can configure additional current outputs with extension modules.
Under Menu/Setup/General settings set the current range of 0 to 20 mA or 4 to 20 mA.
Possible applications
• For outputting a measured value to a process control system or an external recorder
• For outputting a manipulated variable to connected actuators
The current output curve is always linear.
Path: Menu/Setup/Outputs/Current output x:y (slot:output number)
Function Options Info
Current output Options
•On
•Off
Factory setting
Off
Use this function to activate or deactivate a variable
being output at the current output
Source of data Options
•None
• Connected inputs
• Controller
Factory setting
None
The sources of data on offer depend on your device
version. all the sensors and controllers connected to
inputs are available for selection.
Measured value Options
•None
• Depends on theSource of
data
Factory setting
None
The measured value you can select depends on the
option selected under "Source of data".
The next table lists the measured values available depending on the data source.
Apart from measured values from connected sensors, you can also select a controller as the data source. The best
way to do so is by using the "Additional functions" menu. Here, you can also select and configure the current
output for outputting the controlled variable.
Range lower value Selection range and factory
settings depend on:
"Measured value"
You can output the entire measuring range of the
"Measured value" or just some of it at the current output.
For this purpose, specify the upper and lower range
values in accordance with your requirements.
Range upper value
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