Bi-Directional Control of Three Stage Induction Motor Used In Industries to Drive Conveyor Belt

Food industries require conveyor belts to carry the ingredients and manufactured products from one place to the required destination for processing, mixing, refining, cutting, packing and finally dispatching. Majority of the factories employ unidirectional belt control. If bi-directional conveyor belt control is implemented then the efficiency and productivity of the system will be enhanced. Squirrel cage induction motor is used to drive the conveyor belt. Programmable Logic Controllers are utilized for controlling reason. The CAMPCO (Central Arecanut & Cocoa Marketing & Processing Co-operative) Limited has chocolate factory in Puttur which has unidirectional conveyor belt controller for filling chocolates into the containers. To increase the efficiency and productivity bi-directional controller is designed and implemented for the factory in this project work. The direction of rotation of conveyor belt depends on the state of level sensors connected to the container. The ladder program is developed using WPL Soft 2.30 and simulated. The proposed model uses Delta PLC as controller for its fast, stable and exceedingly solid applications in mechanical computerization. A three phase induction motor of 1380rpm, 0.75KW, 2A, 415V with star connected stator is used to drive the conveyor belt in the proposed model. This dissertation work presents configuration and execution of a checking and direction control system for the three phase induction motor to drive conveyor belt based on Programmable Logic Controller technology.