Abstract
The elevator drive system is an common travel tool in our day life.This paper presents under control of the PLC the surge of speed elevator drive system design process.Compiring with the usin-g Relay elevator drive systems, the PLC control system can significantly reduce the time and intermediate Relay use, thus simplifying the control system, in operation elevator control process , the f-ailure rate is drastically reduced, and the operating efficiency has improved significantly. Meanwh-ile PLC also has a perfect function, high efficiency, high performance-price ratio; Non-contact-fre-e wiring, high reliability, strong anti-jamming capability; The small size and low energy consumpt-ion. Based on these advantages ,the study of its lift is of great significance and value.The PC used in this System is the C60p OMRON-hosts, the PC is stable, reliable, widely used in the elevator control system. In addition, the design of the use of advanced dual exch-ange rate closed-Speed Surge Drive devices (commonly known as ACVVdriving System), Accordi-ng to the input devices ideal speed curves, the actual signal compiring with the received signal, timely control imposed on the m-otor winding voltage, so that the lift curve ideal speed operation, ac-hieve zero-velocity layers purposes. The system has DC motor drive system ride comfort, but operating efficiency than the DC hi-gh-lift drag. It also set up a maintenance, fire functions, greatly improving the safety of the elevato-r and practicality.
Keywords : PLC, Surge governing system, Operation ideal curve, The signals compiring
