Design of a PLC Based Elevator Control System

Elevator is an important transport medium in multi-storage building. With the development of better architecture technology, buildings are raising in height. Hence an elevator becomes an important medium of vertical transportation. There are several advantages of an elevator in the modern world. Hence more importance is given to the design of an elevator control system, which is easy for the maintenance and to perform an efficient function. Preliminarily, traditional elevator control systems work on the relay logic. More number of connections of relay logic are found in traditional elevator system. Hence it has become difficult to debug the failures in the system and also it is highly feasible job to facilitate alternate connections to the fault tolerant systems in the relay logic, where as in PLC based system, it is easy to debug the failures in the system as it contains the simple logics and easy maintenance. The main objective of this paper is to replace the traditional relay logic elevator control system with the modern PLC based elevator control system. The proposed work is tested with INDRA-WORKS ENGINEERING simulator and BOSCHREXROTH PLC.