Sensorless Automatic Control of Variable Speed Drive by Industrial Programmable Controller
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Date
2025-09-09
Journal Title
Journal ISSN
Volume Title
Publisher
MOHAMED BOUDIAF UNIVERSITY - M’SILA
Abstract
This project aims to design and implement a sensorless automatic control system for a three-phase
motor using an S7-1200 programmable logic controller (PLC), a SINAMICS G120 variable speed
drive (VSD), and an HMI interface, all programmed through TIA Portal and communicating via the
PROFINET protocol. The system enables precise control of motor speed and direction without the
need for a mechanical sensor, reducing costs and increasing reliability. The system was successfully
tested in practice and has potential for future development.