Detection of Metallic and Non Metallic Objects on a Conveyor Belt Using PLC Logics, HMI Screen, VFD

Abstract

This project was created to control and monitor movable parts on the conveyor belt by a Human Machine Interface (HMI). In our application, we separate metallic and non-metallic objects. This application could be used in pharmaceutical, electronic industries or any industry which deals with metals/plastic. An eye sensor and a proximity sensor have been used to detect the non- metallic and metallic objects respectively. According to that the counter counts non-metallic and metallic objects and display the value on the HMI, whenever a metallic object is detected Air cylinder pushes it out of the conveyor belt and allows non-metallic objects to reach till the end of conveyor. PLC with series FX3U-16MR/ES manufactured by Mitsubishi is used in this project. This logic can handle a series of metallic and non-metallic objects. To control the speed of the conveyor VFD (Variable Frequency Drive) is programmed and used.E-Designer-7 software is used to design the screen. GX Developer software has been used to create PLC logic.