Fieldbus control system design and application in the project of the TKT

Abstract: fieldbus control system in the TKT engineering design and application of the information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. One, the overview of TKT belong to energy conservation and environmental protection projects, for the more than blast furnace gas pressure energy recovery turbine to generate electricity. Baosteel group, a steel company ( Hereinafter referred to as a steel company) 2500 m3 blast furnace TRT engineering computer control system designed by wuhan iron & steel design & research institute. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a fieldbus control system design and application in the project of the TKT article details. One, the overview of TKT belong to energy conservation and environmental protection projects, for the more than blast furnace gas pressure energy recovery turbine to generate electricity. Baosteel group, a steel company ( Hereinafter referred to as a steel company) 2500 m3 blast furnace TRT engineering computer control system designed by wuhan iron & steel design & research institute, at the beginning of the design, the user is proposed with conventional TRT control system has other special requirements: ( 1) Using field bus control system FCS. ( 2) TRT operation station is set in bf main control room, to make positive intrapartum unattended TRT workshop. Through the past design, programming and debugging, the project went into operation in March 2003 to generate electricity. Second, FCS system configuration, the author in the design of a steel company in TRT project, according to the characteristics of the gas differential pressure power generation requirements fieldbus technology mature, reliable, not only should also as far as possible for redundant Yu Jiegou, to ensure that building the TRT will not affect the main blast furnace production. So by comparing several fieldbus control system selection, determine the Siemens PROFIBUS, AS - I combination of fieldbus and the instrumentation, control system using PCS7. FCS hardware mainly by the control station, operation station and connection and foreign communication both total wool composition, specific configuration is shown in figure 1. 2. 1 control station control station including the main CPU and seven extended I/O station ( DPll - DPl7） 。 According to the need, remote I / 0 station ( DPl3- 17) Setting at the scene and diversification and TRTT control room 600 m away from the blast furnace main control room. Controller can realize the sequence control, logic control and loop control, including logic, arithmetic, and is used for loop control related PID adjustment, function and the generation of the slope and so on, a total of more than 200 function block. To ensure the high reliability of system, the controller CPU ( 417 - 4H） , communication module and high-speed communication bus for one-on-one way of redundancy, redundant CPU fast response and switch time meet each other TRT normal production and safety protection requirements. The project, part of the switch input/output with the process of complete sets of equipment, no bus interface; Special detecting instrument ( Such as vibration measuring device) Output is still 4 ~ 20 madc analog signals, so the design also USES local I/O station ( DPll、DPl2） And remote I/O station ( DPl3- DPl7） 。 DPll to DPl7 through PROFIBUS - DP bus connection. Controller and remote I / 0 station configuration, programming and debugging completed by operating station/engineer station, through the communication bus online bottoms. Programming has a variety of ways, namely, instruction sheet, sequence control function block diagram and ladder diagram, etc. According to characteristics of TRT control system, can be combined flexibly use the several ways. 2. 2 operating station operation station consists of two sets of 21 'high resolution flat screen color display, industrial control machine, printer, etc. Can be used as the engineer station operation station. Two respectively according to the requirements set in TRT operation station control room and bf main control room, in addition to the splash screen 'content is slightly different, the content of the two display operation station and operation mode. TRT control room operation station mainly for debugging. Monitoring software using SIMATIC PCS7 OS V5. 1, it works on Windows NT platform, through the rich, perfect simulation, real-time monitoring from the local and remote I / 0 station, PROFIBUS PA with the AS - I fieldbus system of process data, at the same time related process operations. Through programming and operation station configuration, also implement the following main functions: & middot; Alarm function: the monitor software provides alarm log to millisecond to record events, information and alarm status, according to the alarm level respond, and classified according to the requirements related to archive or trigger actions ( Such as printing) 。 · Security functions: monitoring software offer a variety of user manager allows to set user permissions, in view of the different operators set up corresponding encryption level, record the process of important operators. · Data management: monitoring software to provide the label of the log and report editor can record, display, print and copy the historical trend of the important parameters value, so that the data search and fault analysis. 2. 3 share the four communication bus communication bus and industrial Ethernet, PROFIBUS - namely DP、PROFIBUS- PA and the AS - I。

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