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...International journal of engineering research technology ijert issn vol issue november implementation plc based star delta starter for starting and direction control three phase induction motor shruti kharait prof sudhir phulambrikar student iv sem department electrical sati vidisha m p hod abstract in this paper the basic concepts programmable logic controller its applications are discussed hardware set up using is implemented both description software presented flexibility efficient controllability helps growth automation introduction monitoring inspection several processes becoming dominant part technique any industry so basically delegation human function to technical equipments increasing productivity quality reducing costs safety working conditions forms one computerized machines hence regarded as heart automated system first came into existence which was modicon since dick morley dedicated members with association he credited invention known father product range now has been ext...