Application of PROFIBUS in 300,000-ton coking project automation instrument sub-project

Abstract: The application of PROFIBUS in the automation instrument sub-project of the 300,000-ton coking project is provided by the excellent flowmeter and flowmeter production and quotation manufacturers. This plan is a design plan for a company's 300,000-ton coking project automation instrument sub-project. Using German SIEMENS field bus PROFIBUS and industrial Ethernet technology, this phase of the project includes coke oven section, drum cooling section, desulfurization section, and bulky section. For more flowmeter manufacturers to choose models and price quotations, you are welcome to inquire. The following is the application of PROFIBUS in the automation instrument sub-project of 300,000 tons of coking engineering. The article details. This plan is a design plan for a company's 300,000-ton coking project automation instrument sub-project. Using German SIEMENS field bus PROFIBUS and industrial Ethernet technology, this phase of the project includes coke oven section, drum cooling section, desulfurization section, bulky section, and refrigeration section to form an advanced FCS control system. The centralized monitoring of the control room of the blast section, the desulfurization section and the bulky section and the on-site monitoring mode of the switch control room in the coke oven section are realized. Among them, there are 1 operation station and 1 engineer station for the coke oven, 1 operation station for each of the drum cooling section, the desulfurization section and the rough section, and 1 engineer station in combination. The entire control can be through the FCS system and the human-machine interface of the industrial Ethernet system——The operation station and its real-time monitoring software complete all real-time monitoring and control functions, including data processing, display, shutdown interlock protection, manual operation, printing and networking. Introduction to PROFIBUS Fieldbus System The development of the control system has generally experienced three major development stages: the initial use of base-type instrument control, the computer control system DCS with a centralized architecture, and the fieldbus control system FCS developed in recent years. Fieldbus is the result of the development of modern control technology, computer technology and network technology. It is the progress requirement of industrial automation and the necessity of technological development. The field bus makes the field equipment, the field equipment and the control room equipment form the network interconnection system. Fieldbus control system is the development trend of control system. The three major characteristics of fieldbus technology are digitalization of signal transmission, decentralization of control functions, openness and interoperability. At present, the more popular fieldbuses are: FF-FoundationFieldBus (Fieldbus Foundation) fieldbus, CAN (control area network), LONWORKS (local operation network), PROFIBUS (process fieldbus) and transitional HART (addressable). Remote sensor data path) protocol and other five fieldbuses. PROFIBUS field bus is mainly used for programmable logic controller (PLC) and switch quantity detection system. That is, it is more suitable for factory automation systems. PROFIBUS is suitable for process control products, such as regulating valves, actuators, analog I/O modules, digital I/O modules, etc. Its open communication system enables products from different manufacturers to work on the same bus system. Coking Engineering System Composition The entire coking engineering is divided into two control centers, one is responsible for monitoring the coke oven section, the other is responsible for monitoring the drum cooling and other sections. The control system network is divided into upper management network and lower control network, and a complete control network is formed by the link of S7-300 controllers in the middle. The upper management network consists of standard fiber optic cable plus OLM (Industrial Ethernet Optical Fiber Link Module) to form a ring main frame, upwards is connected by ITP (9/15) standard cable to link operator station and engineer station, downwards is connected by ITP (9/15) The standard cable links the Ethernet modules on the S7-300 to form a redundant Ethernet with a transmission rate of 10M/100M to realize the data exchange between the operator station, the engineer station and the S7-300 controller. The lower control network consists of double-angle shielded wires to form a PROFIBUS network. The control system adopts SIEMENSS7-300PLC, the monitoring system adopts SIEMENSWINCC, and is equipped with dual-server hot backup. The whole communication system includes real-time control network DP network and high-speed industrial Ethernet. Each section adopts two SIEMENS S7-315 programmable controllers as the system master and slave, plus digital input and output modules, analog input and output modules and industrial state network modules to form a bottom layer of PROFIBUS The field bus, the upper layer is the control system of Ethernet, uses two CPU modules to realize the hardware hot backup of important parameters, and uses the monitoring software WINCC of SIEMENS to realize the monitoring of the system. Among them, the coke oven section and the drum cooling section are each equipped with an operation station, an engineer station and a printer.

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