本设计基于PLC的带式输送机的手动控制和自动控制,并使用变频启动和Y-△启动实现电动机的启动,防止电动机在启动过程中的过流与过压造成的损害。研究输送带运输过程中的各种故障如撕裂、烟雾、打滑等,通过检测各种故障因素实现对输送带系统的保护并通过上位机组态软件MCGS对系统进行监控画面的组态设计,最终完成PLC的输送带运输监控系统。 The design is based on the manual control and automatic control of the PLC belt conveyor, and the use of variable frequency start and Y- △ start motor start to prevent the motor during start-up over-current and over-voltage damage. Researching the various faults in conveyor belt transportation such as tearing, smoke, slipping, etc., Realizing the protection of the conveyor system by detecting all kinds of fault factors and designing and monitoring the system through the configuration software MCGS of the host computer, The final PLC conveyor belt conveyor monitoring system.