Automatic Water Level Control System Using PLC Project
Automatic Water Level Control System Using PLC Project report
A Programming Logic Controller is a digital computer used for automation of the electromechanical process. It is used to convert the previously used relay logic or wired logic for automation of an industrial process into ladder logic. It is used automate respective process but in this project Siemens LOGO is used which lie in the cheapestcategory or entry level of PLC. This paper deals with Automatic Fluid Level Control Using Programmable Logic Controller in Alameda Textile Factory. Currently Almeda Textile Factory is used conventional relay control system to control level of fluid,however there are a lot of limitations ,such as wastage ,large no of labors, and difficult to maintained . In order to minimize those problems,We havetried to make Automatic using PLC. Electronicdevice used in my project are As sensor -switch,level sensor (limit switches) ,As controller :-PLC and pump motor,solenoid valve.Havingthe above device, I have also programmed using Ladder logic diagram In LOGO SOFTCOMFORT Software and stimulate in order to load to PLC.
The project “Automatic fluid level control with an automatic pump control system “is designed to monitor the level of liquid in the tank .The system has an automatic pumping system attached to it so as to refill the tank once the liquid gets to the lower threshold, while offing the pump once the liquid gets to the higher threshold. Sustainability of available water resources in many reason of the of the world is know dominant issue .This problem is quietly related to poor water allocation ,inefficient use lack of adequate and integrated water management .Water is commonly used for agriculture ,industry and domestic consumption. Therefore, efficient use and water monitoring are potential constraint for home or office water management system. More over the common method of level control for home appliance is simply to start the feed pump at a low level and allow it to run until a higher water level is reached in the water tank
A PLC or programming logic controller is a digital computer used for automation of the electromechanical process. It is used to convert the previously used relay logic or wired logic for automation of an industrial process into ladder logic. It is used automate respective process but in this project Siemens LOGO is used which lie in the cheapest category or entry level of PLC.The reason of it been cheap is that it has limited number of input and output ports .In this project automation of water tank is achieved by using pressure switch as level sensor in order to set a low level and high level inside the tank.
Relays-This relay allows power to switch on and off without a mechanical switch. It is common to use relay to make simple logical control decisions. The development of low cost computer has brought the most recent revolution. At the outset of industrial revolution, especially during sixties and seventies, relays were used to operate automated machines, and these were interconnected using wires inside the control panel. In some cases a control panel covered an entire wall. To discover an error in the system much time was needed especially with more complex process control systems. On top of everything, a lifetime of relay contacts was limited, so some relays had to be replaced. If replacement was required, machine had to be stopped and production too. Also, it could happen that there was not enough room for necessary changes. Control panel was used only for one particular process, and it wasn’t easy to adapt to the requirements of a new system. As far as maintenance, electricians had to be very skill full in finding errors. In short, conventional control panels proved to be very inflexible. As explained above manual or conventional control has some draw backs due to this case we forced to make automatic control system using PLC.