Application Of Siemens PLC In Filter Bag Dust Removing System

On the basis of background of the No.5 blast furnace in WuHan IRON AND STEEL CORP and referring to a lot of relative literature home and abroad. The paper introduces general situation and developing direction on the computer control, explains the general design of process monitor and control system, the component and configuration of hardware and software, combining iron production craftworl, the requirement process control claming and No.5 blast furnace technical flow.According to the operation of blast furnace production requirements, the entire automation system using computer control, PLC as the core to complete the electrical transmission, instrumentation, process control; computer as the secondary to complete the Process tracking of steel-making, production process control.Through the network communications, the coordination of two systems together to complete the process of automatic control, monitoring and management.We have adopted the German Siemens PLC S7-300 as a data acquisition unit and control unit. All I / O templates installed on the remote controller ET200, through Profibus connection with the master PLC. In master PLC's CPU, the S7-300 CPU314-2 processor is selected. The usage of human-computer operating software WinCC6.0, designed the system to monitor and control the screen, making the system has the dynamic monitor function of the on-site data, the guidance function of the on-site operation and the process control functions. Users screen using the Chinese environment, user-friendly, easy to operate.When we design the communication profibus-dp with ET-200 long-distance control station and industrial Ethernet according to situation and the system character, the Ethernet can meet the need of all levels control, and make the business information net unite with control network, reduce cost, learn and apply easily. The design of Profibus-DP's purpose is to apply locate high-velocity data transfer. At this level PLC communicate disperse locate facility, through high-velocity serial date.Since this system is applied, it can work well, and offer us a clear picture and steady control. It also created a good condition for the use of blast furnace. This system is practical.