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l
High
- the alarm relay will activate when the tem-
perature exceeds the threshold value
l
Low
- the alarm relay will activate when the tem-
perature drops below the threshold value
Note:
Also adjustable at Operator Level 3.
HYST
Hysteresis
Used to set the amount of hysteresis applied. (See section
7.0 for details on hysteresis.)
Note:
Also adjustable at Operator Level 3.
Latch
Latching Type
Used to set the latching type of the alarm.
l
NonE
- No latching methodology i.e. when the alarm
condition is removed the alarm will become inactive
without being acknowledged.
l
Auto
- The alarm will remain active until the alarm con-
dition has been removed and the alarm has been
acknowledged. The alarm can be acknowledged at any
time after the alarm has become active.
l
mAn
- The alarm will remain active until the alarm con-
dition has been removed and the alarm has been
acknowledged. The alarm can only be acknowledged
after the alarm condition has been removed.
l
EVnt
- Same as a non-latching alarm except the alarm
is used as a trigger and therefore will not be announced
Ack
Acknowledge
Used to acknowledge an alarm when the controller is in an
alarm state.
l
Yes
- The alarm will be acknowledged, but the alarm
state may remain until the required conditions are met.
l
No
- The alarm is not acknowledged and the controller
remains in an alarm state.
l
Note:
Also adjustable at Operator Level 3.
Ref
Reference
A reference point for deviation alarms. For deviation band
alarms, this reference becomes a "centre point" for the
band.
Note:
Also adjustable at Operator Level 3.
Dev
Deviation
Only available if a Deviation alarm has been configured.
The desired alarm type must be specified at the time of
order.
Used to set the amount by which the temperature can
deviate from the Reference (
REF
) value (see section 9.0 for
more details on
REF
values).
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