REGARD 8-Input 4-20 Module & 8-Channel Display Card (ATEX Version)
Issue 2. October 2011
24
Set alarm trip levels
Commands
11–1
and
11–2
set alarm trip levels for A1 and A2 respectively. These
commands are identical in operation, only
11–1
is detailed here.
PRESS
DISPLAY
•
Select
command
11–1
R
A1 TRIP
Display shows current trip level of A1 alarm for head 1:
h1:20
•
Select head to change.
Current setting shown
.
h2:50
•
Select trip level for head, e.g. 25
h2:25
•
Select next head to change.
Current setting shown
.
h3:20
Repeat for other heads
•
Confirm selection and exit command
R
11–1
Alarm trip levels can be set from 5% to 100% of FSD.
Set rising or falling alarms
Commands 11–4 and 11–5 set the mode of operation of the A1 and A2 relays.
A1 and A2 alarms can be set to trip with either rising or falling gas levels.
The operation of these commands is identical so only command
11–4
is detailed here.
PRESS
DISPLAY
•
Select
command
11–4
R
A1 MODE
Display shows current mode of A1 (A2) for head 1:
h1:RISE
•
Select head to change.
Current setting shown
.
h2:RISE
Select
RISE
for rising alarm
Select
FALL
for falling alarm
•
Select next head to change.
Current setting shown
.
h3:RISE
Repeat for other heads
•
Confirm selection and exit command
R
11–4
