Operating instructions

e1955
11.1999
13
Siemens Building Technologies
Cerberus Division
Cerberus Alarm Concept
How does the Cerberus Alarm Concept function?
When the system operates in «manned» mode, manual call points and automatic fire detectors trigger different
actions in the event of an alarm.
F
Alarm
event
Remote
alarm
manned Operating mode
manned or
unmanned
RESET
ACK
F
Normal
operation
V1
running
pressed
pressedpressed
V1 = 0
V2 = 0
«Emergency»«Minor incident»
unmanned
V2
Local
alarm
running
General
alarm
Alarm acknowledgement time «V1»
This is a countdown time that is active for automatic detectors when the
system operates in «manned» mode.
Checks whether someone acknowledges the danger alarm message within
the preprogrammed time.
On expiration of this time the alarm is transmitted to the fire department.
The remaining time is displayed in minutes and seconds.
Alarm investigation time «V2»
This is a countdown time that is active for automatic detectors when the
system operates in «manned» mode.
Limits the time for investigating the fire location to an individually
programmed time.
On expiration of this time the alarm is transmitted to the fire department.
The remaining time is displayed in minutes and seconds.
In case of minor incidents, an alarm must be reset before V2 expires.
V1 = minutes. . . . . . . . . . . . . . .
V2 = minutes. . . . . . . . . . . . . . .