Configuring Alarms - Dräger REGARD-1 Installation, Operation And Maintenance Manual

Configuring alarms

There are three gas alarms. Each alarm can be set to be
x rising or falling
x latching or non-latching
Note
Regard-1 4-20: if used with a transmitter whose output current can be below 20mA
for concentrations above full scale, set the alarm relays latching.
Regard-1 SE Ex: set at least one alarm relay – the one with the highest alarm level –
to be latching.
The A2 alarm can also be set to be acknowledgeable. You can use the A2 relay to
control an audible alarm that you want to be able to silence even when the gas alarm
is still tripped.
Use switch SW1 on the main board set the operation of the alarms/relays:
A1 alarm
Mode of operation
Rising
Falling
Non-latching
Latching
Issue 6 – December 2006
SW1
A B
ON
OFF
ON
OFF
SW1 on main
board
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