Alarm Concept - Siemens Cerberus CS1140 Planning

34

Alarm concept

34.1 Cerberus alarm concept (CAC)
Alarm
event
Alarm Ι
Confirm message
Reconnaissance countdown V1
Investigate fire location
Monitoring time V2
Alarm ΙΙ
Remote alarm
Fire & Security Products
Siemens Building Technologies Group
The alarm concept must be worked out individually for each system
The important thing is to pass on the alarm message quickly to the appropriate group of
recipients
The requirements vary between
«Discreet alerting» of the reconnaissance squad, e.g. via staff paging system
«Alarm / evacuation» for people familiar with the location
«Alarm / evacuation» for people unfamiliar with the location
«Area evacuation», e.g. building storey
The Cerberus alarm concept prevents the unnecessary turnout of the fire department
for minor incidents
The CAC is based on an alarm organization involving the presence or absence of per-
sonnel:
Presence of operating personnel or "Day"
Absence of operating personnel or "Night"
The response of the operating personnel is monitored by two independent time circuits
(V1 and V2) monitored
The CAC is an integrated part of the CC11/CI11 control unit . The required parameters
can be entered via the user functions
Principle of the Cerberus alarm concept
During the "Day" operating mode, if an alarm is activated its source is located and the
decision is taken "Emergency" or "Minor incident"
During "Night" operating mode, all signals immediately generate a "Remote alarm".
The activation of a manual call point always immediately generates a "Remote alarm".
Operating personnel:
Emergency
F
present
V1
no
acknowledged
?
yes
Minor
incident
V2
reset
?
no
present or
absent
absent
F
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05.2003