Alarming concept
102
Building Technologies 008725_h_en_--
Fire Safety & Security Products 06.2011
37 Alarming concept
The alarming concept must be defined individually for each system
The rapid forwarding of alarm messages to the corresponding circle of recipients
is important
The requirements vary between
– "Discrete alarming" of the investigation crew, e.g. using human search system
– "Alarming / evacuation" for people familiar with location
– "Alarming / evacuation" for people not familiar with location
– "Area evacuation", e.g. floor
37.1 Cerberus alarm concept (CAC)
The Cerberus alarm concept prevents the unnecessary calling-out of the fire bri-
gade for minor incidents
The CAC is based on a "presence-dependent" form of alarm organization:
– Presence of operating staff, known as 'Manned'
– Absence of operating staff, known as 'Unmanned'
The response of the operating staff is monitored by 2 independent time circuits
(V1 and V2)
The CAC is an integrated part of the CC11/CI11 control panel, the parameters
needed can be entered via user functions
Principle of the Cerberus alarm concept
– During the "Manned" operating status, if an alarm is sounded the location of the
fire is first sought, and the decision on whether it is a "Serious/ minor incident"
taken locally
– During the "Manned" operating status, all alarms immediately activate "Remote
alarms"
– Activation of a manual call point always immediately triggers a "Remote alarm"
F
no
acknowledged
?
F
reset
?
yes
no
Emergency
Minor
incident
Reconnaissance countdown V1
Confirm message
locationMonitoring time V2
Investigate fire
Alarm
Alarm
Alarm
event
Remote alarm
Operating personnel: present absent
present
or
absent
V1
V2
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