Instruction manual
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Sensor Status
This column shows the status of the sensor that ha been mapped to the 4-20 mA output. Possible
messages include Normal, Unmapped, and Sensor Error.
Input Value
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 Status
This column shows the status of the 4-20 mA output. 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.
4 mA =
Type in the text box the input value that you want to correspond to a 4 mA output by the option
card.
20 mA =
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.
6.26 Alarm Output Menu
Alarm Condition
In the left hand column, a list of all possible alarm conditions will be displayed. Only the alarm
conditions that are possible given how your controller is configured will appear. To the right of
each type of alarm condition there will be a column labeled Critical Alarm with a choice of “Yes”
or “No”. Click on the “No” radio button if you do not want that type of alarm to be considered
critical.
If an alarm condition is selected as a critical alarm, then you have the option of being notified that
the alarm condition exists, by triggering the alarm relay, sending an email, or calling a pager.
The WebMaster will attempt to send the alarm message email five times at 5 minute intervals and
will then stop trying, even if unsuccessful.
Alarm Relay Status
This menu is for information only, and tells you if the alarm relay is currently on or off, and if it is
on, for how much time. Possible status messages are Off, Off/Manual, On/Time counting up
(indicating how long the alarm relay has been active) and On/Time counting down/Hand (for
manual output activation).