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INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
For example
• If channels 1 to 8 have been set to Group-1
• The Group type has been set to “Audible”
• The internal horn-1 can be linked to the group by selecting Group-1 under the horns tab
Screen shot shown above for reference.
21.4 Auto Acknowledge
In applications where the annunciator is left unattended for long periods noise pollution can be
prevented using the automatic acknowledge feature.
This feature is used to assign the automatic acknowledge function to the associated group.
In the normal view 8 groups are shown as standard and the remaining groups can be accessed if
the user selects “View” followed by “Advanced”
The “delay” eld allows the user to enter a time delay in seconds and once set the annunciator
will automatically acknowledge the alarms after the pre-set period has elapsed.
The automatic acknowledge feature will silence the audible and the visual alarm will also be
acknowledged in accordance with the selected ISA sequence.
Please note as the timer is triggered from the horn circuit the user must select automatic
acknowledge OR automatic silence as either function will stop the timer.
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