Automatic metal sorting conveyor machine based on Programmable Logic Controller

The clothing and food industry had to require for each product which is produced by them is free of dangerous metal. To handle the problem, the industry did anyways to decreasing metal contents that might be involved in the product. One of the methods that the industry able to do is metal sorter automatically system that used to do when the product is on the conveyor. This method is counted so efficiently if we know that the conveyor is used for moving an item from a place to another place by using an induction motor as a mover. This research purposes of presenting an example of a Programmable Logic Controller (PLC) uses as an electronic device that able to control the conveyor metal sorter system automatically. We used a photoelectric sensor to detect an item on the conveyor. Meanwhile, inductive proximity is used to detect metal content behind the item. This research also is written on how this PLC is more efficient if we compared it with using the conventional relay.