Envent 131S, Manual

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Envent Engineering Ltd – 131S & 132S Software Manual – Revision 1 Page 31
4.9 Alarms
Alarms
The alarms page allows the user to define points which will trigger certain states.
These states may be software or hardware discrete outputs. The table below
describes the functionality of each column.
Variable Variable which is selected from the System Variables on the
right
Label User-defined label for display purposes
Sense Mode Determines whether the alarm is ascending or descending
Setpoint User-defined setpoint for the alarm
Reset User-defined reset point for the alarm
Deadband Absolute difference between set and reset points
Latch Checked = Alarm will remain until acknowledged
Unchecked = Alarm will clear when the state clears
Output Controls Select which discrete outputs are changed when the alarm
state is true
Alarm On Timer Allows a “grace period” before the alarm is activated
Alarm Off Timer Allows a “grace period” before the alarm is deactivated
AO Effect None = Alarm has no effect on Analog Output
Full Scale = When in alarm state, AO goes to 20 mA
Below Zero = When in alarm state, AO goes to 3.5 mA