OPEN_2000 PLC application in the control system of the pellets

OPEN_2000 application of PLC in the control system of the pellets in anshan Wang Yuelong intellectual exchange standard control co. , LTD. Welcome to visit e hall exhibition hall 3 PLC controller PLC programmable controller, PLC programming cable. 。 。 Application background in sichuan province, panzhihua steel city enterprise corporation pellet factory was founded in March 2004, at the end of the same year in operation, from design to the commissioning of the same trade the first time the shortest, the factory the most compact structure, the construction of the most difficult, is a typical weidiao, oxide pellet production capacity of 1. 2 million t/year, because the oxidized pellets has advanced and complex production process, so also is very strict to the requirement of automatic control system, control system of pelletizing plant of panzhihua iron &steel co part adopts OPEN_2000 PLC controller hardware and supporting the OPEN VIEW of monitoring software. OPEN_2000 processor adopts advanced 32 bit CPU, embedded real-time multitasking operating system configuration, network support module hot standby redundancy, hot-swappable technology, powerful CPU module with large storage capacity, and can support various communication interface RS232, RS485, Ethernet. Can realize collection, arithmetic, logic, timing, control, communications, and other functions, its application development is convenient, can be controlled with computer is added. the system, realize the distributed control, compared with the common programmable controller PLC, it significantly improved in processing speed, hardware redundancy CPU synchronous speed faster. OPEN_2000 CPU and I/O module combination can form a variety of works, local, extension, remote works respectively corresponding to small, medium and large control system has the perfect solution, can be widely used in electric power, metallurgy, machinery, chemical industry automation control. System running under Windows environment, configuration software USES the OPEN VIEW3. 6, upper machine and lower machine OPEN_2000 communication using Modicon modbus TCP/IP driver, database and lower machine communication by adopting the working style of PORTserver SERVER for data exchange with the machine, read two CLIENT SERVER status data, in order to improve the speed of upper machine and lower machine communication on the Internet. System architecture: panzhihua pelletizing plant automatic control system of the network architecture diagram as shown in the figure below: the whole control system including bus redundancy design for the whole, the system USES a 5 sets of OPEN_2000 processor, monitoring stations (6 sets Three sets of hot standby monitor) Station, 2 engineers, 2 switch ( Each hot standby) , double Ethernet address bus; According to the control room is divided into local and remote control station location, including local control station in master control room workshop, the remote control station in the dry with control room workshop, using optical fiber communication between local and remote control station, according to the accused of signal is mainly divided into digital signal and analog signal control. Two sets of sensors are installed in the master control room, in each monitoring station has a as a SERVER, the other two to CLIENT PC monitoring by the OPEN VIEW software implementation. PLC station configuration set up 10 PLC control station in this system, respectively in pelletizing preparation control room, control room and materials as shown in the figure below: CAB1 - 10 for control cabinet put oneself in another's position number; Raw material preparation control room CAB1, CAB2, balling CAB3 - control room CAB10。 System configuration monitor: research China industrial P Ⅳ 2. 0 g, 512 MB of memory, 80 gb hard drive, 19 'LED monitor engineer station: DELL1. Switch volume data acquisition and processing, according to the system realization of interlock control, such as: start order, order stop, emergency stop, fault parking, and other functions. Instrument volume data acquisition and calculation, analog display, control, such as: temperature, pressure, flow rate, thermocouple, heat resistance, etc. , the intelligence of analog PID control, such as frequency conversion equipment, etc. Important parameters display real time trend curve and history trend curve; Process variable values of alarm, record and print; System self diagnosis, all of the hardware architecture of existing OPEN_2000 equipment real-time monitoring; Conclusion pangang pellet since since it was put into operation stability control system, with a high degree of automation, realize the automatic production, daily output of 4000 tons, OPEN_2000 perfect architecture and a variety of interface communication convenient system maintenance, user interface simple and clear, operators can easily navigate in a short time, support for multiple programming languages makes development more flexible and practical, at present there are various including OPEN_2000 system solution of the control system of large, medium and small, and had been successfully applied in sintering, mineral processing, and other areas of the control.
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