The Plc Transformation Planer Control System Research And Implementation

This study is aimed at technological transformation projects on a double-housing planer-type of Model B2012A in non-standard wood double Suining Equipment Co., Ltd. The double housing planer is a kind of large-scale mechanical processing equipment, used for processing the large-scale work piece or grasps several work pieces at the same time on the basis of working bench creating and paring processing, it is one of the groundwork lathes in the mechanical industry. The double housing planer has some special features, such as many movement ways, complex structure, many electrical circuit and complicated electrical control.Therefore,the outdated A series big noise, electrical sparks and control circuit contacts and other factors lead to high failure rate, maintenance difficulties, high apparatus park sets of rate , and high energy consumption.Mainly pulling adopts and regards enlarger of the electrical machinery as the direct current generator of the excitation regulator - motor system of this double housing planer, because the working bench works in apply-brake-reverse reciprocating the motion state, high control requirement, and the maintenance inconvenience of direct current machine, it is very difficult to use the system to meet the control requests. With the AC frequency converter technology and the increasing range of applications, transformation outdated double housing planer pull system become possible.The device uses electrical control relay to control circuit, using a large number of intermediate relay and time relay resulted in large, complex circuits, relays the high incidence of failure, poor reliability, and maintenance workload. With the development of PLC technology and its wide application, the transformation method with PLC control system has been proven effective.Adopt Mitsubishi FX2N-80MR programmable controller and Emerson TD2000 inverter to implement the tranformation to the double housing planer. Mitsubishi PLC finishes the collection of the data and task of control on apparatus such as frequency converter, electrical machinery in the system. The software GX Developer7.0 of programming based on FX2N PLC adopts the module procedure design method, uses a large number code reuse, reduces software development and maintenance.Chapter one introduced the structure of the double housing planer of the Model B2012A, original control system problem, put forward the initial programs on system transforms and the major research topics. Chapter two introduced the basic composition of PLC, characteristic of data processing procedure and Mitsubishi's Model FX2N PLC. Chapter three recommended basic structure and frequency conversion of the frequency converter to adjust the principle of the speed. Chapter four recommended the structure of control system, hardware configuration and software in detail. Chapter five introduced systematic installation and debugging method. Chapter six is a conclusion of this paper.