Chapter 1: Introduction
8 P/N 3102309-EN • REV 001 • ISS 18JUL19
Icon Description
Icon Description
Printer option button. Tap to send
report to a configured printer.
Fire phone disconnect button. Tap to
disconnect a connected call.
Details option button. Tap to access an
event details report.
∞
Future feature
Appears next to acknowledged events
for proprietary mode systems.
1X
Future feature
Keypad delete button. Tap to delete a
character when using the screen
keypads.
3X
Future feature
User administration button. Tap to
delete a user.
Future feature
Users administration button. Tap to
modify user privileges.
System operation
The basic function of the EST4 control unit is to monitor status changes in the life safety system and to activate
outputs according to the site-specific software. Status change signals, also called events, are classified by type
and mapped into event queues.
Event indicator queues
The event indicator queues that display on the LCD screen are determined by the 4-CPU properties configured
during programming. Events in the queues can pass through to a configured printer, coder, or email service.
The event counters display the number of events in the event queue. A star designates that there are
unacknowledged or new events since the control unit was last silenced.
The queues that appear on the List bar display in order of priority based on programming and market settings.
The project market setting also determines which event types go into each event queue, and their priority.
Unique operator alert signal patterns are assigned to the event queues that alert you to off-normal system
conditions for active event conditions. An alert signal may automatically sound a reminder signal, if configured.
Table 3: Event queues and properties
Priority level [1] Operator alert signal pattern [2] Event type description
1 3 pulses every 16 seconds Events that signal a telephone handset is plugged
into a firefighter telephone jack
2 2 pulses every 4 seconds Events that signal a request to take control of the
system
3 3 pulses every 4 seconds Events that signal fire alarms or other life-
threatening emergencies
4 3 pulses every 4 seconds Events that signal mass notification
announcements
5 2 pulses every 4 seconds Events that signal off-normal conditions with
sprinkler and extinguishing systems, and other
equipment related to property safety
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