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Operation
-
Alarm
Setpoints
142
DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual
Release M
April 2017
5.11 Alarm Setpoints
Introduction
An alarm consists of a relay contact and an operator interface indication. The alarm relay is de-energized
if Alarm 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.
There are twelve alarm setpoints, two for each alarm.
The type and state (High or Low) is selected during configuration: see
Section 3 - Configuration
for
details.
ATTENTION
An active alarm will always provide an indication on the display but may not control the relay;
that is, a higher priority function such as a control loop or timer may have control of the relay.
Procedure for displaying the alarm setpoints
The procedure for displaying and changing the alarm setpoints is listed in
Table 5-25 Procedure for displaying or changing the alarm setpoints
Step
Operation
Press
Action/Result
1
Access the Alarm Set Up
group
SET
UP
Until you see:
Upper Display:
SET UP
Lower Display:
ALARM X
X
= 1, 2, 3, 4, 5, 6
2
Access the Alarm
Setpoint Values
FUNC
Successively displays the alarm setpoints and their
values.
Upper Display:
The alarm setpoint value
Lower Display:
AXS1 VAL
– Setpoint 1 value of
alarm 1, 2, 3, 4, 5, or 6
AXS2 VAL
– Setpoint 2 value of
alarm 1, 2, 3, 4, 5, or 6
▲
or
▼
Change any alarm setpoint value you select in the
upper display.
3
Return to normal
operation
LOWR
DISP
Returns to normal operation.