Functions - Bosch FCS‑320‑TM Series Operation Manual

12 en | Technical specifications
3.4

Functions

Air samples are taken from the area to be monitored via the aspiration unit. They are fed via a
pipe system with defined air sampling openings to the sensitive detection module.
Detection
Depending on the response sensitivity of the detection module in use and the alarm threshold
programmed, the FCS-320-TM aspirating smoke detector triggers the alarm when the
corresponding air obscuration threshold is reached. The alarm is displayed via the main alarm
LED on the device and transmitted to a connected fire panel.
Various delay times can be set for the alarm thresholds, as well as for displaying and
transferring malfunctions. Alarm messages are saved and are reset after the cause has been
eliminated.
LOGIC×SENS
The LOGIC·SENS intelligent signal processing compares the measured smoke level with
known disturbance variables and decides whether something is an alarm or deception. LOGIC
SENS can be activated or deactivated using the fire panel's programming software.
Fire source identification
Fire source identification is possible if an I pipe is planned for a maximum of five areas or
devices. The procedure can be divided into four phases (Fire source identification to Fire
source identification).
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FAS-420-TM series
Figure 3.1: Phase 1: Normal operation
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2020.04 | 2.1 | F.01U.130.928
Phase 1
In its general operating state, the FCS-320-TM Aspirating Smoke Detector extracts air
samples from the monitoring range and analyzes these for the presence of smoke
particles.
E 10
9
8
D
7
6
C 5
4
B
3
2
A 1
Phase 2
As soon as the system has switched to alarm state as a result of a rise in the
concentration of smoke particles typical of a fire, the alarm is signaled.
Operation guide
Conventional Aspiration smoke detector
Bosch Sicherheitssysteme GmbH