Desenvolvimento de um sistema de automação para um banco de cargas

Abstract

A human operator can accidentally make mistakes when operating a machine manually; however, an automated system minimizes this possibility. Furthermore, this system allows a more precise control and variables monitoring. In this context, this paper aims to develop an automation system for a purely resistive load bank of 100 kW. This type of machinery allows carrying out tests with loads on electrical generators, rectifiers, UPS, batteries and others. Currently, the only operation mode is manual, done by switching circuit breakers. After analysis, an operating methodology was created, through an automation system, which includes a fixed, timed and ramp operating mode. Thus, the electrical project, the programming of a programmable logic controller (PLC), the configuration of a Modbus industrial network and the development of screens for a human-machine interface (HMI) were elaborated. The project was successfully completed, obtaining an automated machine, with a modern and friendly interface, providing the operator with safe and intuitive maneuvers.