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9.8 Analog Sensor Alarms
Analog inputs have high and low alarms, to alert the
operator if a measured value is out of the normal
operating range. All alarms in the Aegis II are
latching alarms. Latching alarms do not reset
themselves if the parameter recovers back into the
acceptable range. The operator must acknowledge
the alarm for the alarm light and relay to reset to the
OFF mode.
Latching alarms are especially helpful for remote
installations where the operator checks on the
system a few times a day or less. Under certain
circumstances, if there is a control or feed problem
and the alarm does not latch, the operator would not
know there is an issue.
The Aegis II also has an option to delay the alarm
before alerting the operator. This feature is most
helpful in applications where trapped air or other
conditions cause the sensor reading to spike
occasionally, but it is
normal operation for
that process.
Without the delay the
controller would have
frequent nuisance
alarms that would
require
acknowledgement by
the operator. This
option is in minutes
and adjustable from
the alarms menu.
See below.
Alarm
settings for all Inputs and outputs work in the same
way. There are 3 types of settings for the alarms on
any I/O.
Adjust Alarms changes the High and Low
alarm limits.
Delay on Alarm adjusts the time the Aegis
II will wait before activating and latching an
alarm,
Clear Alarms, as implied will clear all
alarms. Follow the steps below to alter the
Alarm limit settings for any alarm.
9.8.1 Analog Alarm Configuration
1- Press MENU
2- Scroll down to Adjust Alarms and press OK
3- Scroll down until you locate your sensor and
press OK
Page 55 of 102
Programming the Inputs
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