AUTOMATIC OPERATION OF MOTOR BY USING PLC (MICRO LOGIX 820)

Abstract: The programmable logic controller (PLC) is a microprocessor-based system that accepts input data from switches and sensors. It processes that data by making decisions in accordance with a stored program, and then generates output signals to devices that performs a particular function based on the application. It was developed to automate the motor control process in a way that offered flexibility to make circuit design changes easier. The original purpose of the PLC was to allow electro-mechanical and electronic input devices to communicate with a computer that would perform logical operations on the input data and output a corresponding signal to some form of output device. A PLC is designed to check the input status, execute the program, and update the output status. It also uses a programming language based upon readily identifiable symbols common to motor control.

Keywords: PLC, Vibration Sensor, Motor Protection Circuit breaker, Switch mode Power supply, Reliable operation.