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Alarm concept, Cerberus alarm concept (cac), Principle of the cerberus alarm concept – Siemens FC700A User Manual

Page 56: 24 alarm concept, 1 cerberus alarm concept (cac), 2 principle of the cerberus alarm concept

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Alarm concept

56

Siemens Building Technologies

007836_a_en_--.doc

Fire & Security Products

03.2004


24 Alarm

concept

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

24.1 Cerberus Alarm Concept (CAC)

The Cerberus alarm concept prevents the unnecessary turnout of the fire de-
partment for minor incidents

The CAC is based on an alarm organization involving the presence or absence
of personnel:

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 FC700A control unit. The required parame-
ters can be entered via the user functions

24.2 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"

F

Alarm
event

Remote
alarm

manned

Operating mode

manned or
unmanned

pressed

'Minor incident'

pressed

F

pressed

'Emergency'

Normal
operation

V1

running

V1 = 0

V2 = 0

unmanned

V2

Local
alarm

running

General
alarm

- or -