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Notes On Alarms
Outputs can be set up as an alarm, similar to the standard
alarm format. Four types of alarms are available: Process,
Deviation, Inverse Band, and Normal Band. All alarms may be
configured to be inhibited on power-up for a configurable
time duration.
Process Alarm: Activates at preset value, independent
of setpoint. “High” process alarm
activates at and above alarm setting.
“Low” process alarm activates at and
below alarm setting.
Deviation Alarm: Activates at a preset deviation value
from setpoint. “High” or “Low” deviation
alarm activates above or below setpoint
according to the preset deviation value.
Inverse Band Alarm: Activates when the process is within
a specified band centered around the
setpoint.
Normal Band Alarm: Activates when the process exceeds
a specified band centered around the
setpoint.
Latching Alarms
The Series C’s alarms may also be configured as latching
alarms by selecting in the Alarm Action parameter
selection.
Deviation, Inverse
Band, and Normal
Band Alarms track
with setpoint.
When a latching alarm
has been activated and
the alarm condition
has been removed, the
Mode/Enter key
must be pressed to
unlatch the alarm.