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Chapter 5
Alarm Function
Alarm is the main function of the fire alarm linkage control equipment. The system can
recognize, control and drive our company’s bus devices and multi-wire devices, including
intelligent detectors and modules. The alarm functions mainly include fire alarm, device
request/feedback and handling and display of various faults.
For correct fulfillment of alarm function in this host, please ensure the following
conditions:
Bus devices needed in the engineering such as detectors and modules are in place and the
engineering wiring is completed and correct;
Address codes of detectors and modules are compiled (using the special encoder provided
by our company) and no detectors or modules share the same address code;
Device properties of every one of the host’s detectors and modules are correctly set, such
as building, floor, room, location description, work mode, production type, equipment type
etc.
All kinds of linkage information are correctly designed and set as per the engineering
requirements;
Correctly set bus manual control panel and multi-wire linkage unit;
Correctly set printer, indicating panel and CRT-9000 fire control room graphic display
system;
Correctly set multiple hosts in the networking system.
On the premise of completing the above mentioned settings, the system can perform a full
set of fire alarm functions.
Alarm function's sources of information:
1.
Fire alarms
: all kinds of
detectors
(such as ion, photoelectric, temperature, infrared,
compound detectors etc.), manual alarm apparatus, interface module, monitoring
module, fire hydrant button etc.
2.
Request
:
output module
,
input/output module.
3.
Feedback
:
input module
,
input/output module.
4. Faults: breakdown of detectors and modules, short circuit or open circuit of loops,
communication fault of indicating panels, communication faults of the host,
power faults, printer faults.
The following is the introduction of alarm interface and related information. The system’s
alarm interface is as followed:
Figure 5
‑
1 Alarm interface
When a certain device in the system detects an alarm signal, the signal will be processed in
the host for confirmation and linkage operation. The corresponding results will be displayed on
the host screen with corresponding acousto-optic instructions simultaneously given by the