IMPROVING THE EFFICIENCY OF WEIGHER USING PLC CONTROLLER

Abstract

Static and dynamic weighing systems are now the most prominent measurement and control instruments of raw materials flow rate. Considering the development of technology in industries, fabrication of special progressive systems of weighing in which the used state of art modern control methods of mechatronics has changed the process of classical control principles based on fieldbus technology development and use of the various types of data exchange protocols have led to the creation of flexible ways of interconnections between DCS system and main controllers with related modular boards. In industrial sectors, the raw material that is entering to the system must be in an equal ratio for the production and it should be weighed properly for further use. In this project the main focus is on the raw material handling system that is to know the amount of raw material entering to the system by using load cell and controllers. Weigh feeders are used to weigh and to handle the raw material. It weighs accurately the raw material for maintain proper blend for sinter. This blend is called as basemix material. Programmable Logical Controller controls the weigh feeders by using speed sensors, load cell, VFD and by using the control input. By designing the certain parameters whole system is controlled by using Programmable Logic Controllers. In this paper PLC is used to control overall system because it is capable of controlling weigh feeder system. Main focus is given to weigher to weigh accurate amount of material entering to the system.