基于MODBUS总线通讯的土槽台车电气控制系统设计

Design of the Electrical Control System of Soil Bin Trolley Based on MODBUS Communication

针对土槽台车原继电器控制系统和电磁离合器调速存在的问题,采用PLC、变频器和触摸屏技术进行了系统的升级改造,主要包括电气控制系统的硬件设计,PLC与变频器基于MODBUS总线通讯的实现和人机界面的设计等。三菱FX系列小型PLC通过MODBUS总线可以控制ABB大功率变频器ACS800的启停、给定参考速度,并可以实时读取变频器的主要运行参数。

To aiming at the problems of the original control system of the soil bin trolley,a detailed transform plot based on PLC,inverter and touch screen was put forward,including hardware design,MODBUS communication realization and HMI design,etc.Through MODBUS communication the high power ABB ACS800 inverter can be controlled by the Mitsubishi FX series PLC.Meanwhile,the main running parameters of the inverter can be read back to PLC.