System Description; Overview - Siemens FC7xx Operation Manual

9 System description

9.1 Overview

Acquisition
↑ Automatic fire detector
Sounder
Manual call point
Switching
Remote transmission
Event category for alarm
events
'Pre-ALARM'
'ALARM'
Building Technologies
Fire Safety
This part of the document includes information on the setup and functions of the
fire detection installation.
►► Evaluation
Figure 14: Graphic representation of a fire detection system
Acquisition
Fire detectors detect fire phenomena, e.g., smoke, heat or carbon monoxide, and
transmit signals to the control panel in the form of different ↑ danger levels.
Evaluation of the ↑ danger levels
The control panel evaluates the danger levels and decides whether to trigger
alarms or not. In doing so, the control panel distinguishes between automatic and
manual fire alarms, 'Pre-ALARM' and 'Degraded FIRE ALARM'.
Alarm events are allocated to the following event categories:
Typical example
The detector detects a fire phenomenon with a low
↑ danger level
The detector detects a fire phenomenon with a high
danger level
Table 6: Event categories for alarm events
►► Alarming and control
↑ Global alarming (e.g., fire brigade)
↑ Local alarming (e.g., horns)
↑ Fire control (e.g., doors)
Service intervention
Activation/cause
Detector sensor
Detector sensor
System description
9
Overview
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2015-12-15