Prototype Conveyor System for Automatic Bottled Water Filling Machine using PLC

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Nattapong Paenoi
Apirak Kongprawech
Dechathorn Lhekyoomadun
Patipol Subtaweepanya


This paper presents the design of conveyor belt and sensor installation for an automatic bottled water filling machine using programmable logic controller (PLC). The objectives of this paper are to design the motor driven the conveyor belt, to design the sensor installation and to apply the PLC for controlling the conveyor belt, stepper motor rotation and close a lid. The height and length of proposed water filling machine with conveyor belt are of 150 centimeter. There are two type of sensors as NPN-capacitive proximity level sensor and NPN-capacitive liquid level sensor. The PLC MISUBISHI system is the main controller and computer is used to communicate between user and system. GT Designer3 software is used to design the GUI for automatic control. Experimental results show that the automatic bottled water filling machine can contain the water with the averaged time 14 second per bottle. The averaged error of water volume is less than 8 %.

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