Rehabilitation of an Old Traditional Elevator Based on PLC Techniques

Abstract

This paper describes the rehabilitation and developing of an old didactic traditional elevator available in the laboratory. The authors tried to merge the programmable logic controller (PLC) with the elevator's traditional electric circuit for developing its control circuitry. The PLC employed in this research is Simatic (s7-200), it was used to replace the old control system of the elevator which had high faults that were due to its complex wiring and numerous mechanical contacts which were able to burn out or could result in bad contacts. The obtained results were satisfactory because the merging procedure between the traditional and the modern systems is successfully implemented; personnel safety is improved and electromechanical problems were decreased