Implementación de un sistema automatizado para la elaboración de harina de granos andinos en el laboratorio Procesos Industriales de la Facultad de Ciencias.

Abstract

The automation of grain drying was developed by fluid bed from the laboratory of industrial processes at the faculty of Science at the Escuela Superior Politecnica de Chimborazo, and two stages were implemented: toasted grain and grain milled, this way it could obtain a single set of equipment for carrying out the topic called: Implementation of an automated system for the production of flour of Andean grains in the laboratory of industrial processes at the faculty of Sciences. Before automating, a diagnosis of the conditions was performed, also the operation of systems that made up the machine as they were mechanical, electrical and electronic, for post-process automation make adjustments in addition to performing the necessary test for checking the good performance of the new system to be implemented. The control of the software was performed by using two programming tools: STEP 7 for the programmable logic controller PLC S7 – 1200, and DOPSOFT for programming HMI DELTA of 4.3”. For handling actuators, contactors and motor protection were used. The communication between PLC (Programmable Logic Controller) and HMI (Machine Man Interface) was performed by Ethernet. The software and hardware system are couple to allow an automatic control of the machine for an easy and a friendly management with the operator. On other hand it enables the system to control moisture, so that the grain is kept within the range of 16% to 20% of relative humidity. It is concluded that implementing the new system improves availability and therefore performance. Among the recommendations the review of technical data of the elements used in the automatic control part is necessary.