plc外文翻譯---plc應(yīng)用于電梯的發(fā)展趨勢(shì)-plc設(shè)計(jì)-全文預(yù)覽
【正文】 生產(chǎn)工藝。 PLC 的最大特點(diǎn)在于：電氣 工 程帥 已 不 在 電氣的硬件上花費(fèi)太多的心計(jì)，只 要將按鈕開(kāi)關(guān)或感應(yīng)器的輸入點(diǎn)連接到 PLC 的輸入點(diǎn)上就能解決問(wèn)題，通過(guò)輸出 點(diǎn)連接接觸或繼電器來(lái)控制人功率的啟動(dòng)設(shè)備，而小功率的輸出設(shè)備直接連接就可以。 This paper levelt PLC application in elevator trend and development PLC application in the development trend of the elevator Programmable Logic Controller (PLC) is a mon control device which use puter technology as a core, PLC gets a wide range of applications in all walks of life. In the elevator industry, PLC’s role has been fully expressed. This paper introduces the PLCcontrolled model of a fivestory elevator， include it’s position, main function, the I/O interface distribution of the PLC, the PLC’s programming methods and procedures design of the elevator system. With procedures design of the elevator control system can achieve the elevator door’s opening 4 and closing control, and the elevater’s indication under the call, moving from top to bottom, startingup, delay closed, Ping layer, opening the door, making signals in the queue, close to the escalator and alarming control under the mode of the elevator’s operation mode. Through the process of piling software, hardware connection and the conjunction of elevator model and the PLC control system, which makes the elevator control system model intuitive reflected in the course of operation and realized the elevater’s functional control. The 21st century will develop multipurpose, fullfeatured tower building, ultrahigh speed elevator continue to bee the research direction. Traction type superfast elevator research continues to super capacity motor, high performance by the microprocessor, damping technology, new roller guide boots and security clamp, permanent mag synchronous motor, elevator car air pressure relief and noise suppression systems propulsion. Using the linear motor drive there is also a greater research space elevator. Future superfast elevator intimacy will have increased significantly. Elevator iWith economic development, the increasing number of highrise buildings, elevators have bee indispensable in daily life the vertical transport. Better meet user requirements, development of high security, high reliability, high efficiency, low energy consumption, ride fort of the elevator, the elevator is the domestic and foreign enterprises and research institutions the main control system which was developed to achieve these objectives, the most important ways. The rapid development of industrial automation technology for the elevator control system technology update provides the material base. Continue to be the most advanced areas of industrial control technology and products introduced to the elevator control, elevator industry, technology development is the most important and effective article programmable puter controller PCC, the puter technology, munication technology, automatic control technology for the integration of new are
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