"基于PLC的吊篮升降控制系统设计与优化"

This article introduces the design of a PLC-based lifting control system. The basket is a vertical transportation device that is indispensable in the construction of high-rise buildings. It relies on electricity to move a cabin that can carry people or goods, making vertical movements along the guide rails in the building shaft. It plays a crucial role in the construction of high-rise buildings and has a wide range of applications. The control system for the operation of the lifting basket using PLC systems requires smooth operation, easy operation, and high safety requirements. The entire lifting system in this operation is controlled by PLC, logic control circuits, etc., for the incremental lifting and long-distance lifting of the basket, as well as braking control during the lifting process. The system mainly consists of PLC, logic control circuits, ladder diagrams, including AC asynchronous motors, relays, contactors, limit switches, push button switches, inverters as a comprehensive control system. In this design operation, the control unit uses the FX series programmable controller produced by the Japanese company Mitsubishi to control the entire process of the machinery. Its simple structure, convenient operation, high operational efficiency, high lifting accuracy, easy to understand and master characteristics make it ideal for control systems in various industrial applications. Keywords: Programmable Controller; Variable Frequency Drive; Ladder Diagram.