电梯PLC控制系统设计:技术创新与应用优势
Abstract: In recent years, with the rapid development of technology in China, elevator production techniques have seen significant advancements. Elevator manufacturers are continuously improving designs and modifying processes to produce updated elevators. Elevators are primarily divided into mechanical systems and control systems. With the development of automatic control theory and microelectronics technology, there have been significant changes in the drive mode and control methods of elevators, and AC variable frequency drive is currently the main development direction for elevator drives. Currently, there are three main control systems for elevator control: relay control systems (early installed elevators mostly used relay control systems), PLC control systems, and computer control systems. Relay control systems are gradually being phased out due to their high failure rate, poor reliability, inflexible control methods, and high power consumption. While computer control systems have strong functions in intelligent control, they also have drawbacks such as poor disturbance resistance, complex system design, and difficulties for maintenance personnel to master repair techniques. On the other hand, PLC control systems have become the most widely used control method in elevator control systems due to their high reliability, ease of use and maintenance, strong interference resistance, and short design and debugging cycles. PLC control systems are highly valued and are now widely used for the technical transformation of traditional relay control systems. Keywords: PLC; elevator; control system; design.
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