| Drawing technology is the important link of metallurgical production, drawingmachine is the main equipment for drawing. The wire drawing machine of us developsrelatively slowly, the control system method is also relatively simple. Since drawingproduction process requests the motor starting torque as large as possible, it’s best to ensurethat the output torque is not reduced when the motor slow dowm. And when there aremultiple rolls, more than one motor linkage runtime, drawing machine control systemdesign requirements are higher.Straight wire drawing machine is the most widely used device for drawing production.There are many drawing machine system control methods, generally widely used DCgenerator-motor unit (FD system) to complete the control system. Straight wire drawingmachine runs with some motors. It has high efficiency than ordinary drawing machine.Therefore, control system is relatively difficult. Its system requires synchronization andhigher stability.With the development of society, the innovation of electronic control technology, wiredrawing technique has greatly improved, PLC analog control mode has become the mostwidely way. This method especially used in some small factories widely. For it can bebetter ensure tension constant, satisfy the system stability, also the hardware of the systemis simple,and low cost. In view of the practical need, using PLC analog converter control tomulti wiredrawing control system.This design using Siemens PLC, conventer and MCGStouch screen combination control，realized automation of operation, real-time closed-loopcontrol, this can realize the linkage of the operation more than motor. Making the systemwork high precision, high coordination, improve production efficiency.This project using PLC analog control inverter manner finished the old production linesystem transformation, the new production line in Tianjin factory has been put intooperation, steadily and liably. |
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