Operation
4/00 UDC2300 Universal Digital Controller User Manual 49
4.10 Alarms
Introduction
An alarm consists of a relay contact and an operator interface indication. The
alarm relay is de-energized if setpoint 1 or setpoint 2 is exceeded.
The alarm relay is energized when the monitored value goes into the allowed
region by more than the hysteresis.
The relay contacts can be wired for normally open (NO) energized or normally
closed (NC) de-energized using internal jumper placement. See Table 2-3 in the
Section 2 – Installation for alarm relay contact information.
There are four alarm setpoints, two for each alarm. The alarm type and state
(High or Low) is selected during configuration. There are several alarm types that
can be selected for each alarm setpoint.
Alarm Setpoints Display
Table 4-9 Procedure for Displaying Alarm Setpoints
Step Operation Press Action
1
Access the
Alarm Set Up
group
SET UP
until you see ALARMS in the Lower
Display.
2
Access the
Alarm
Setpoint
Values
FUNCTION
to successively display the alarm setpoints
and their values.
[▲] [▼] to change any alarm setpoint value you
select in the upper display.
3
Return to
normal
operation
DISPLAY
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