GE CGA 351, User Manual

Page: 42 / 133

Setup and Calibration 4-3
December 2004
Setting Up the Alarm
Relays (cont.)
Note:
The
[Alarm-4]
option is also available in the above list box.
The following alarm features may be set in this submenu:
•
Trip Type: specifies whether the alarm relay triggers when the live
measurement value moves above or below the trip value.
•
Trip Value: specifies the live measurement value at which the
alarm relay triggers.
•
Deadband Value: specifies a small range of live measurement
values, centered on the trip value, for which the alarm relay does
not trigger or reset. This prevents the alarm relay from repeatedly
triggering and resetting when the live measurement value is very
close to the trip value.
•
Test: permits the manual triggering and resetting of the alarm
relay, to verify that it is working properly.
•
Fail-Safe: specifies whether the alarm relay is energized during
normal operation or during an error condition.
Go to the appropriate sub-section to set the desired alarm feature.
Note:
The setup of Alarm-1 is used as an example in this manual. To
set up Alarm-2, -3 or -4, return to the previous prompt and
select the desired option. Then, repeat the following steps.
Setting the Trip Type
Enter the alarm setup menu, as described on page 4-2, and proceed as
follows:
Note:
The
[Test]
and
[Fail-Safe]
options are also available in the
above list box.
Alarms Use the [ ] and [ ] keys to
select
[Alarm-1]
and press
[ENTER]
.
Alarm-1
Alarm-2
Alarm-3
POWER ESC ENTER
Alarms..Alarm-Feat Use the [ ] and [ ] keys to
select
[Trip Type]
, and press
[ENTER]
.
Trip Type
Trip Value
Deadband Value
POWER ESC ENTER
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