Recognition of fault and security of three phase induction motor by means of programmable logic controller

Abstract

This paper presents a fault protection of three phase induction motor. Induction motor is common in many industries. Fault can be occurred due to over speed, over load, high temperature, vibration, over current and over voltage. Complete monitoring is necessary to prevent the motor from the damage. Various protection schemes are implemented to protect the motor from the fault. Here we come with the PLC (Programmable Logic Controller) and SCADA (Supervisory Control and Data Acquisition) for the detection and protection of three phase induction motor from the fault. PLC is used to control the system and the SCADA is used to control and monitor the motor. Motor status can be viewed and controlled in remote location by using the SCADA software. If any fault occurs, motor automatically turns off and gives the warning to the person working in the vicinity. Hereby we can avoid unexpected failure of the motor and prevent the whole industrial process from shutting down all of a sudden which can be dangerous to the people working in the industry. This possesses high efficiency, low cost and more safety benefits than relay basedsystem.