电梯控制系统的PLC和变频技术研究及应用

摘要：在现代社会和经济活动中，电梯作为城市物质文明的标志起着重要的作用。电梯系统的性能对人们的生活影响不断凸显，因此必须不断努力提高电梯系统的性能，以确保电梯的运行既高效节能又安全可靠。随着我国经济的高速发展，微电子技术、计算机技术和自动控制技术得到了快速发展，交流变频调速技术已经进入了一个崭新的时代，其应用范围也越来越广泛。新技术的出现和发展同时也推动了电梯行业的快速发展。当前，电梯的推动技术已经发展到了变压变频调速，其逻辑控制也由PLC代替了原来的继电器控制。本文采用PLC和变频器实现了电梯的常规控制，在对变频器和PLC芯片进行合理选择和设计的基础上，显著提高了电梯的控制水平，使电梯实现了较为理想的控制和运行效果。 关键词：电梯，PLC，变频器，变频调速 Abstract: In modern society and economic activities, the elevator plays an important role as a symbol of urban material civilization. The performance of the elevator system has a significant impact on people's lives, so it is necessary to continuously improve the performance of the elevator system to ensure that the elevator is both efficient, energy-saving, and safe and reliable. With the rapid development of China's economy, microelectronics technology, computer technology, and automatic control technology have made rapid progress, and AC variable frequency speed regulation technology has entered a new era, with its applications becoming increasingly widespread. The emergence and development of new technologies have also promoted the rapid development of the elevator industry. At present, the traction technology of elevators has developed to variable voltage and frequency speed regulation, and its logic control has been replaced by PLC instead of the original relay control. This paper uses PLC and frequency converter to realize the conventional control of elevators. Based on the reasonable selection and design of frequency converter and PLC chips, the control level of the elevator is significantly improved, achieving ideal control and operation effects.