7
Mass Notification 7-1
INTRODUCTION AND OPERATION
Starting from version 12, FireFinder-XLS can be configured as a combined Fire Alarm
and Mass Notification system. Athough they use many of the same elements (PMI,
SCM switches, etc), the MNS and Fire Alarm systems operate independently. The
MNS is reset separately from the Fire system, and vice versa. Audibles may also be
silenced and unsilenced independently. Troubles generated from the MNS are
displayed under an MNS-specific tab (MNST) on the PMI display, allowing them to be
acknowledged separately from other troubles. Troubles from the Fire system are
displayed under the general Trouble tab.
Troubles on devices or modules that are used by both systems are displayed under the
general Trouble tab. Examples of this are HTRI-Ds where one input is used as a Fire input and
the other as an MNS input, and DLCs that host a mixture of devices that are used by either
system.
Resetting the MNS can be accomplished by pressing the Reset soft-key under any of
the MNS tabs on the PMI. Similarly, resetting the Fire system can be accomplished
by pressing the Reset soft-key under any of the non-MNS tabs on the PMI.
There is no “MNS silence” softkey on the PMI screen. Instead, SCM-8 switches are
used to accomplish the silencing of MNS audibles. These audibles can also be
silenced via the Node Control menu. In either case, logic must be written in Zeus to
enable this functionality.
MNS events that have higher priority than Fire events are given the “MNS1” event
type in Zeus, and those with lower priority than Fire events are given the “MNS2”
event type. The PMI will only display the MNS1 and MNS2 tabs if there are initiating
devices configured for those event types in Zeus.
MNS1 and MNS2 events are latching-type, meaning that after an active device used
for the MNS returns to normal, the corresponding event remains visible at the panel
until MNS reset is performed. Note that when a MNS device is restored to normal,
the LED on the device changes back from red to green as soon as any reset type is
issued (Fire reset or MNS reset). Likewise, the red “zone active” LED on a CDC-4
card turns off once the zone is restored to normal state and any reset type is per-
formed. This behavior occurs also on the DLC card.
When an ‘MNS’ message is activated, the assigned pre-recorded message is played
in a continuous loop until deactivated by the operator.
If a voice message from one system is active when the other system is reset, the
message will not be canceled.
For MNS applications, pre-recorded messages are on an all-call, all-zone basis. Not selective
per zone.
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