Honeywell UDC 3300 사용자 설명서

4/00

UDC 3300 Controller Product Manual

171

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 at the rear terminals. See Table 2-8 in
the Section 2 – Installation for alarm relay contact information.

There are four alarm setpoints, two for each alarm. The type and state
(High or Low) is selected during configuration. See Section 3 –
Configuration for details.

Table 5-20 lists the procedure for displaying and changing the alarm
setpoints.

Access the
Alarm Set Up
group

until you see:

ALARMS

Lower Display

SET UP

Upper Display

Access the
Alarm Setpoint
Values

to successively display the alarm setpoints
and their values. Their order of appearance
is shown below.

Lower Display

Upper Display

The alarm setpoint 
value

(Alarm 1, Setpoint 1 value) 

(Alarm 1, Setpoint 2 value) 

(Alarm 2, Setpoint 1 value) 

(Alarm 2, Setpoint 2 value)

 or

to change any alarm setpoint value you
select in the upper display.

Return to normal
operation