Dotación y Aplicación de un Módulo con Variador de Velocidad para Simulación de Control de Arranque y Velocidad del Motor de una Grúa para el Laboratorio de Control Industrial.

Abstract

A module with frequency variation device has been acquired and used for the Speed control of asynchronic motors for the industrial Control Lab which permits the Speed control in threephased motors. With this equipment it is intended to familiarize and instruct the students in the use of the variation device through the development of practices and testing of the module. This document together with the module refer exclusively and directly to the command, protection and Speed control of asynchronic motor of squirrel cage or this is centered in the variation device ATV312HO75M3 of the Schneider distributor which acts directly on the motor. The speed variation device ATV312HO75M3 permits the motor its acceleration and slowing down progressively besides adapting its Speed to operation conditions very accurately and simply. In the squirrel cage asynchronic motor variation devices of the frequency converter type which makes the Speed be practically insensible to disturbances, are used; for this reason this document is carried out where it is shown that it is possible to control its drive forward and backward (two-thread/ three-thread command) its stop through CC injection braking, ramp commutation, preselected Speed and step-to step drive (JOG); the latter permits to simulate the functioning of the crane bridge, main practice of the document. It is recommended to take into account security norms of the Altivar because of the work with elevated tensions and read the operation guide before putting it into tension.