MZX125/250 Fire Detection Systems
Doc. version 1 17
3.3.1 EVENT MONITORING
The term ‘event’ is used to describe a change in system status that must be
acknowledged and/or generates an output.
Examples of events include:
Mains failure
Detection of a fire condition
Operation of ‘EVACUATE’ key
All events trigger a response, the category of which depends on the event
type and will be one of the following (in priority order):
Full Alarm or Alert
Pre-Alarm
Fault
Isolation
Test Mode
Warning
Information
When an event occurs, it is stored in the event log. The contents of this log
may be displayed in two formats:
Unaccepted and locally accepted events
All events in chronological order of occurrence
The events are stored in chronological order with unaccepted events
marked as outstanding. The event log may hold up to 3000 events; in the
unlikely occurrence of the log filling up, the oldest record will be overwritten.
3.3.2 EVENT DISPLAY
The display automatically shows the last event of the category with the
highest priority. With Scroll keys, it is possible to get all events in this
category in chronological order. With Softkey F5 the user can change to
another category (if available).
Important: Category ‘Full Alarm/Alert’ shows only the first point of a zone in
alarm. If two points of one zone are in alarm, only the first one which was in
alarm will be displayed. The second alarm can only be accessed via the
menu option ‘View Event Log’.
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