Dräger Regard 3900 Instructions For Use Manual page 36

Configuring and calibrating a Regard 3920 controller
A.5.2 Relay menu
Relay 2
Function
Channel(s)
Alarm type
Energize mode
Latch
Acknowledge
Use the relay menu to view or configure the relay module relays.
Relays 1 and Relay 9 are preset, non-configurable, system-fault relays, which cannot be configured. Relays 2–8 and 10–16 are
configurable. The relays present depend on the combination of internal control modules. For a controller using two relay modules
(sixteen relays), the relay layout would be:
Module 3 – Relay 1–8
Module 4 – Relay 9–16
Function – Set the relay as: Common, Single, Voting, Alarms inhibited or No function.
Channel(s) – Only required for single or voting alarms.
Single – Select the channel from the channel list.
Voting – Enter [number of channels required to satisfy vote] out of [number of channels in voting group]. Then select
the channels from the channel list.
NOTICE
i i
Inactive channels are shown with a dotted tick box.
If the selected channels do not match the number of channels required or the voting group, an on-screen message
informs the user.
Create a common alarm for a group of N channels by configuring the relay as voting 1 out of N, and specifying the
relevant channels in the voting group.
The following settings are only required for common, single and voting alarms.
Alarm type – Select the alarm or fault required (A1, A2, A3, F1 or F2).
Energize mode – Select energize on alarm or normally energized.
Latch – Select latching or non-latching.
Acknowledge – Select acknowledgeable or non-acknowledgeable.
36 Regard 3900 Series