Development of PLC Based Process Loop Control for Bottle Washer Machine

摘要

In this paper we are presenting a process loop that can be used in bottle washer machine. It is a holistic approach. Because wherever a control of liquid is required, it can be used. It can be used in chemical and oil industries also. Water is used for washing purpose in bottle washer machine. Total three parameters are controlled 1 ..level, 2.flow and 3.pressure etc. There is a very strong interaction in between these parameters. Pressure and flow are required to control for better washing. The aim is to maintain above listed variable by using Programmable Logic Controller (PLC). It increases efficiency and response time both. By modifying hardware this loop can use for bottle filler also. For that a valve is required at output side. Almost industry requirement is an output with safety. So, safety aspects are also considered in it. Different sensors and valves are used with PLC. They are controlled by a program. According to the program PLC generates different signals and valve is controlled. This way pressure, level and flow can control. As an extra feature a Human Machine Interface (HMI) is also connected. So, that user can change the set values directly.