relay and is therefore irrelevant if no relay is fitted. Both types of alarms activate a
discrete LED on the front panel of the instrument if triggered, although this is all a
LED alarm does, hence its name.
4.2.3.1.1 ActIOn ( Alarm action )
This programs how the alarm is to operate. The options are:
oFF ( Alarm inactive )
Lo ( Low alarm. Triggers when PV goes below setpoint )
Hi ( High alarm. Triggers when PV goes above setpoint )
dEv ( Deviation alarm. See Deviation band 4.2.3.1.5 )
Default setting: oFF
4.2.3.1.2 LAtch ( Latch enable for an alarm )
The options for this are:
FALSE ( Latch disabled )
trUE ( Latch enabled )
When Latch is enabled, the alarm remains set once triggered, even when the Process
Variable has returned to a non alarm condition. A non-latching alarm is self-resetting
when the alarm condition is removed.
Pressing CLEAR, from the Display Process Variable mode, clears a latched alarm if
not in an alarm state.
Default setting:FALSE
4.2.3.1.3 SEtP ( Alarm Setpoint )
This entry allows the user to program the setpoint value. This is entered in engineering
units. This can also be set from the SEtP menu ( see 4.2.1 ) which provides a quick
OUTPUT MENU
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