72-900-06 Rev. F
Page 24 of 38
4.7.3 4-20mA Outputs (Optional Accessory)
To enable 4-20mA output, see sec 4.6.3. The output will then be configurable from the
settings page. First set the type setting to the sensor input that the 4-20mA output will
track, any probe types can be configured. Then enter the sensor reading ranges to scale
the 4-20mA output to. Any sensor value can be entered for the 20.0 and 4.0mA ranges.
The actual output can then be adjusted from 20mA to 24mA and from 0mA to 5mA for
calibration to the receiving device.
4.7.4 4-20mA Inputs (Optional Accessory)
To enable a 4-20mA input, see sec 4.6.3. Once the board is enabled device will appear in
the settings page. Here you can setup the peripheral. To setup you must configure the type
and calibrate the input. To configure the type select the mode which resembles your
application. Then you must calibrate the input, depending on the input type, you may need
buffer solutions to do this. Hold the input device in a low state, enter the correlating value
in the controller on the top line, do not exit the setup until the next point has been
calibrated, otherwise you will get an error. Place the input in a high state and enter the
correlating value in the controller. Your input should now be set-up. If you still get an error
exit out and start over. If you wanted to have any timers trigger based on the 4-20mA
input you can configure a set point control timer.
4.8 Timers - Modes
From this menu pick the mode that the timer will follow.
Pulse Timer – Runs the timer based in inputs from a water meter.
Percent Timer – Sets the Timer to run on a repeating cycle. Set the Cycle time
period and percentage of the cycle time period to run for. Example: Cycle
Time=60minutes, % Minutes to run=10, the timer will run for 10% of 60 minutes, or
6 minutes every 60 minutes.
28-day timer- Runs the timer based on a calendar schedule of specific times, days,
and weeks. Typically used to add biocides
% Post Bleed – Runs the timer for a percentage of the bleed time when the bleed
control stops.
4-20mA Out 1 = Cond.
9999 uS = 20.0 mA
0000 uS = 4.0 mA
Min. diff. = 1000 uS
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