基于PLC控制的小型货物升降机.

电子与信息工程学院本科毕业论文论文题目基于PLC控制的小型货物升降机调速系统的研究学生姓名刘中洋学号103522010专业电气工程及其自动化班级103521指导教师汪洋2014年5月摘要I摘要垂直距离解决方案大多数采用“升降机”。传统升降机主要采用继电器—接触器进行控制并在电动机转子回路中串接附加电阻进行调速；这种简易落后的系统逐渐被可编程序控制器控制与变频器变频调速系统所替代，以实现更高效率、更强可靠、更易操作的工控理念。本文是研究基于PLC控制变频器调速的小型货物升降机。首先，实现对小型货物升降机系统方案的设计。然后，对PLC、变频器、电动机、显示、控制面板等硬件部分进行设计并使用GXDeveloper软件编程和GXSimulator软件仿真；最后，完成对整个系统的测试。本设计较传统升降机，系统更具可靠性、稳定性、功能性和低耗能，也更具广阔的市场！关键词：升降机；可变程序控制器；变频器；GXDeveloper；GXSimulator湖北科技学院学士学位论文IIABSTRACTTheelevatorisappliedinthesolutionofverticaldistanceinmostcases.Thetraditionalelevatorusedthecontactorcontrolsandaddtheadditionalseriesresistorinthemotorrotorspeedcontrollooptoadjustspeed.ThissystemissosimpleandbackwardthatitisreplacedbytheprogammablecontrollerandACmoterinvertortoachievemoreefficient,morereliableandeasiertooperateindustryconcept.ThisarticleistostudysmallfreightelevatorbasedonPLCcontrolandfrequencyinvertorspeedcontrol.Firstly,realizethedesignofthesmallfreightelevatorsystem.Secondly,thePLC、invertor、motor、alarm、displayandotherhardwarepartsdesignandtheuseofGXDevelopersoftwareprogrammingandGXSimulatorsoftwaresimulation;Finally,completethetestofthewholesystem.Thisdesignthantraditionalelevatorsystemmorereliability、stability、functionalandlowenergy,andmorebroadmarket!KEYWORDS:Elevator;Programmablelogiccontroller;Inverter;GXDeveloper;GXSimulator目录III目录1绪论......................................................................................................................................11.1课题研究意义................................................................................................................11.2升降机的应用与发展...................................................................................................11.2.1升降机的应用.........................................................................................................11.2.2升降机的发展........................................................................................................21.3课题研究内容...............................................................................................................22系统方案设计......................................................................................................................12.1小型货物升降机设计框图............................................................................................12.2小型货物升降机设计的工作过程...............................................................................12.3小型货物升降机设计结构...........................................................................................23硬件电路设计......................................................................................................................53.1升降机电路设计............................................................................................................53.2PLC控制电路设计........................................................................................................53.2.1课题PLC选型.......................................................................................................53.2.2三菱FX2N-48MR接线图.....................................................................................63.3变频器控制电路设计....................................................................................................73.3.1FR-E740变频器的工作原理.................................................................................73.3.2课题变频器选型....................................................................................................83.3.3三菱FR-E740接线图...........................................................................................83.4电动机电路设计...........................................................................................................93.4.1电动机的选型.........................................................................................................93.4.2三相交流鼠笼式异步电动机接线图....................................................................93.5显示电路和控制面板设计.........................................................................................103.5.1显示电路的设计..................................................................................................103.5.2控制面板的设计..................................................................................................104软件程序设计....................................................................................................................134.1编程软件GXDeveloper..............................................................................................134.2课题流程图设计..........................................................................................................144.2.1PLC控制程序流程图...........................................................................................144.2.2变频器控制程序流程图......................................................................................154.3小型货物升降机梯形图设计......................................................................................15湖北科技学院学士学位论文IV5系统仿真测试.....................................................................................................................195.1仿真软件GXSimulator....................