Contol of asynchronous electric motors using PLC in industrial automation

Cilj ovog završnog rada bio je opisati upravljanje asinkronim motorima korištenjem PLC-a u industrijskoj automatizaciji. U uvodnom dijelu rada opisan je asinkroni motor, njegovi dijelovi, princip rada, njegove najbitnije karakteristike i različiti sustavi pokretanja te isto tako i gubitci. U sljedećem dijelu rada sam uveo i opisao programabilni logički kontroler gdje se opisuju glavni dijelovi PLC uređaja, glavna pravila te osnovne logičke funkcije. U završnom dijelu su napravljene i opisane sheme glavnog i pomoćnog strujnog kruga te shema PLC programa koje u konačnici predstavljaju sustav povezivanja PLC-a i asinkronih motora koji se mogu koristiti u industrijskoj automatizaciji.The aim of this paper was to describe control of asynchronous motors using PLC in industrial automation. The introductory part describes the asynchronous motor, its parts, the principle of operation, its most important characteristics and different starting systems, as well as losses. In the next part of the paper, I introduced and described programmable logic controller where the main parts of a PLC device, the main rules also the basic logic functions are described. In the final part, the schemes of the main auxiliary circuit and the scheme of the PLC program are made and described, which ultimately represent the system of connecting PLC and asynchronous motors that can be used in industrial automation