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This research focuses on the design and implementation of a PLC based water level control system. In this research, there are three primary objectives the water level indicator circuit design, manual control system of water level control and the PLC based automatic water level control. Float switches cannot be able to use to indicate the multi water level in the desired control system. Therefore, AND gate based digital electronic water sensor is invented and used in this proposed not only manual water level control but also PLC based automatic water level control by dividing in eight steps. Induction motor is used to drive the pump as a one set package. So, induction motor starting method is selected according to the power rating of motor, type of motor and nature of application. Star delta starting method is used to reduce the starting current of induction motor. For PLC based automatic water level control, Siemens S7 1200 PLC is used to control the desire water level. There are 10 inputs and 10 outputs in the proposed automatic water level control. Ladder diagram programming is used for this control. Mrs Yin Yin Mon | Mrs Win Moet Moet Htwe | Mrs Khin Ei Ei Khine "Simulation of Automatic Water Level Control System by using Programmable Logic Controller" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd25172.pdf |
