Design And Implementation Of Monitoring System Of Multi-Motor Drive In Rolling Mills

Steel in the development of the socialist four modernizations in China, plays a huge role. Transportation, industry, agriculture, construction, mechanical and electrical industries need a lot of steel. Industrial development history, iron and steel industry is the basis for the development of the society as a whole, is a important symbol of national industrial level. Tell the development of automatic control technology, to promote the progress of rolling automation, users of steel precision demand is higher and higher, to control the process of rolling of steel rolling workshop is more and more strict.This article is anshan rolling workshop control system after modification, need a complete set of monitoring system. The monitoring system which conform to the requirements of the production process, the operator input the parameters of the varieties of steel billet, dc transmission system to calculate the electrical data is passed to the device. Distance due to the PC and PLC station, next to the special substation transmission cabinet design a set of OPC standby system, prevent the communication interrupt, affect production. The system of PLC station with Siemens S7400PLC system, equipped with CP443communication module. Drive to choose the latest6RA70DC speed regulating device, PLC and communication device communications use PROFIBUS DP fieldbus protocol, upper pause with WinCC configuration software. Beside the machine backup monitoring system using OPC technology, the use of VB programming software. Monitoring and control system has good man-machine interface, the operator without professional training will soon be skilled master, PC monitor also has a curve, alarm records, the speed and current real-time display, and other functions.Beside the machine backup monitoring system for substation operating personnel to master well and without understanding production technology professional knowledge, in the event of communications, PC can’t run, such as fault, electrical personnel can first input process data to ensure production run smoothly.After months of equipment assembly and alignment in the continuous monitoring system, the function of the various operational picture has reached the requirement of design, machine backup monitoring system play a role. Production operation personnel skilled manipulation of the monitoring system, alarm record function of upper machine, the electrical maintenance personnel find fault provides favorable basis.