57
INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
21.6 Groups
Any channel within the Annunciator can be set to be part of Group-1 to Group-32 as required.
21.7 Group Types
21.7.1 First-Up Group
In applications where the annunciator is monitoring alarms which are interlinked for example:
Compressor and Turbine monitoring it is important to identify the rst alarm to occur within the
group as it simplies and quickly identies the root cause of failure.
Once the alarms have been assigned to a group the “Groups” function needs to be identied
using the drop-down menu provided against each group.
For example if channel 1 to 8 have been assigned to Group-8 and they are all part of the same rst-
up group the drop-down menu for Group-8 should be set to “First-Up Group”
21.7.2 Input Group
Input Groups are typically used with Common Relays GPA and / or GPB and 3rd party devices to
identify that an alarm / alarms with a group are in the abnormal condition.
With “Input Groups” the common relay would activate when an alarm in the group occurs and the
common relay would automatically return to normal when the Input returns to normal.
Please note if multiple channels are used with the Group - ALL of the alarms must be in the non-
alarm state before the common relay returns to normal.
Any channel within the Annunciator can be assigned to any group and once assigned the “Groups”
function needs to be set to “Input Group” using the drop-down menu provided against each group
as required.
Once set the Common Relay / Relays need to match to follow the Group as required.
To Next Page
Loading...
Need help?
General
