Instruction manual

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Input Status
This column shows the status of the sensor that has been mapped to the 4-20 mA output. Possible
messages include Normal, Unmapped, and Sensor Error.
Input Reading
This column shows the process value of the input that is mapped to the 4-20 mA output. This will
be in units of conductivity, pH, ORP, temperature or whatever the 4-20 mA input is using for units
of measure.
Output mA Value
This column shows the status of the 4-20 mA output in mA.
Output Status
This column shows the status of the 4-20 mA output in %, as well as any error messages. It will
read Normal if the input value is between the two programmed values defining the 4-20 mA
output, or Over Range if the input is above the 20 mA value, or Under Range if it is below the 4
mA value.
Custom Name
Type the name you want to use to identify this output into the text box.
4 mA Value
Type in the text box the input value that you want to correspond to a 4 mA output by the option
card.
20 mA Value
Type in the text box the input value that you want to correspond to a 20 mA output by the option
card.
4-20 mA Loop Cal
If the device connected to the controller’s 4-20 mA output is not reading correctly, click on the Set
4 mA button and the controller will output a fixed 4 mA signal. The receiving device can then be
calibrated to read correctly for a 4 mA signal. Then click the Set 20 mA button and the controller
will output a fixed 20 mA signal.
Click on the Submit button to save the changes.
6.38 Analog Output Menus (1-4) - Proportional Feed Mode
(only appears if one or more 4-20 mA output option cards are installed)
In Proportional Feed mode the controller monitors an analog or sensor input and modulates an
analog output to maintain a set point value. The analog output value is displayed in percent.
If you make changes to the Input Assignment, you will need to click on the “Submit” button in
order to see all the correct units.
You may also change the 4-20 mA Output Control Mode here. If you do, you will have to reselect
the Input Assignment as well.
This section assumes that the 4-20 mA Output Control Mode is set to Proportional Feed. Other
control mode types are described in other sections of the manual.