基于plc的传送带多速度控制系统

《基于plc的传送带多速度控制系统》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、摘　　要传送带是一种广泛应用于工业的传输设备，对其进行自动化的改造无疑将提高工业生产的效率和安全性并且将大大的节约人力资源。因其意义重大，对传送带的改造是多方面的而本文将主要介绍的是：基于西门子PLC的传送带多速度控制系统的设计。该系统的设计包括硬件设计和软件设计。其中硬件设计包括西门子PLC、变频器、异步电动机的外部电路的设计与安装；软件部分包括程序的设计与调试。所设计系统最终能够通过PLC与变频器实现以下功能：(1)能对物品进行运送，速度可根据两物品之间的距离自动变换防止传送物品之间发生碰撞；（2）能够实现故障报警、状态指示、传送带带负载软启动等；（3）能够实现手动与自动状态切换，方便维护

2、。该系统主要运用了西门子PLC、传感器、继电器、变频器等器件，利用PLC良好的自动控制性能，实现流水线传送带传送过程的无人控制。本文将主要对PLC、变频器以及PLC对变频器的控制部分进行介绍。关键词：西门子S7-200PLC传送带变频器无人控制VVVFABSTRACTTheconveyorbeltisawidelyusedinindustrialtransmissionequipment.Itsautomatedtransformationwillundoubtedlyimprovetheefficiencyandsafetyofindustrialproductionandwillgreat

3、lysavehumanresources.Thetransformationoftheconveyorbeltisawiderange.ThisarticlewillfocusonSiemensPLCbasedconveyorspeedcontrolsystemdesign.Thedesignofthesystemincludinghardwareandsoftwaredesign.ThepartofHardwaredesign,includingdesignandinstallationofSiemensPLC,inverter,inductionmotorexternalcircuit;T

4、hesoftwarepartincludesthedesignanddebuggingoftheprogram.DesignedsystemuseingPLCandVVVFwilleventuallybeabletothefollowingfunctions:(1)deliveryoftheworkpiece,Speedcanautomaticallychangeaccordingtothedistancebetweenthetwoworkpiecetopreventacollisionbetweentheworkpiece;(2)toachievefaultalarmstatusindica

5、tion,theconveyorbelttoloadbootprompt,loadthesoft-start;(3)canbeachievedmanuallyreset.ThesystemismainlyusedSiemensPLC,sensors,relays,inverterandotherdevices.PLCautomaticcontrolperformance,nocontroloftheassemblylineconveyorbelttransferprocess.ThearticlewillintroducethePLC,inverterandhowPLCcontroltheco

6、nveyor.Keywords: SiemensS7-200 PLCconveyor inverter automated VVVF目　　录第一章　绪论········································································11.1传送机的简介···············································································11.2可编程逻辑控制器（PLC）·············································

7、···············21.3变频器············································································4第二章　设计方案····································································72.1系统功能·················