technical requirement
Norms and standards
NFPA standard of National Fire Protection Association of America
GBJ 1 16-98 Code for Design of Fire Detection, Alarm and Fire Fighting System
GB 1 1920-89 "general specification for centralized control devices for electrical parts of power stations".
GB4720-84 low-voltage electrical control equipment
JB6 16-84 General Specification for Secondary Circuit Panel (Platform) of Power System
á c1440 Enclosure protection level of low-voltage switch equipment and control equipment.
Mathematical Interface of ANSI 488 Programmable Instrument
Binary logic diagram of ISA-55.2 process operation
Binary logic diagram of ISA-55.3 process operation
ISA-55.4 instrument circuit diagram
Terminal board of NEMA-ICS4 industrial control equipment and system
Shell of NEMA -ICS6 Industrial Control Equipment and System
GB50229-96 Code for Fire Protection Design of Thermal Power Plants and Substations
Intelligent fire alarm linkage controller
The intelligent alarm linkage controller should be modular in structure, with the functions of multiple detection loops, automatic test, automatic management and self-diagnosis, as well as overvoltage and overcurrent protection and short circuit isolation.
The intelligent alarm linkage controller should be directly connected to the centralized control computer through the system network interface (RS232 or Ethernet), so as to monitor and control all the working states of the fire alarm system equipment on the computer.
Each fire alarm host should be connected through the ring network, and can also work independently and normally. The host display screen displays all the event information in the relevant area according to the software settings.
The system should have self-checking function, which can carry out regular self-checking or inspection of system components, automatically record the inspection results, and list unqualified items or devices.
The control host adopts modular structure, and the loop card can be installed according to the owner's requirements for future maintenance and expansion as required;
The control host should have strong anti-interference ability: > 30 V/m (1m ~1GHz); It has the ability to withstand the instantaneous interference of external power supply and prevent lightning strike.
The data communication of the detection loop adopts a two-bus structure, and the working voltage of the data communication loop is 36V and below. When the return line adopts 1.5mm2 signal line, the distance between the equipment with address at the end and the intelligent alarm linkage controller shall not be less than 1500m (the transmission distance of each detection loop shall not be less than 1.5Km), and the total extension distance shall not be less than 2Km.
In order to improve the reliability of the system, each detection loop must be connected into a loop, that is, each loop signal line is connected from the control panel loop terminal of the fire control center, and the end is also connected back to the control panel loop terminal of the fire control center.
The system can set a variety of alarm thresholds and other parameters, and the control program can be set arbitrarily according to the needs of the owner, so as to control the fire-fighting equipment and fans, fire smoke exhaust valves, spray valves and other equipment in various parts correspondingly.