基于PLC桥式起重机变频调速控制系统

本系统根据桥式起重机的运行特点,桥式起重机控制系统主要由上位机(主控指令)、下位机(PLC控制系统)、变频调速系统等组成。PLC系统采用三菱(Mitsubishi)公司产品,能控制起重机大车、小车的运行方向和速度换档;吊钩的升、降方向及速度换档,同时能检测各个电机故障现象并送到主控操作台进行显示,减小了传统继电—接触式控制系统的中间环节,减小了硬件和控制线,极大提高了系统的稳定性,可靠性。

PLC based control system for bridge crane

This system according to the operation characteristic of bridge crane, bridge crane control system adopt industry touch-sen- sitive screen control the system of bridge crane frequency conversion, this system mainly include location going to machine （ master control order）, the next machine（ PLC control system）and frequen- cy conversion system. PLC system adopts the Mitsubishi company products, can control the crane cart, car operation direction and chanqe speed. To rise, lower cliver direction and change speed,can measure each motor trouble phenomenon and send this to mas- ter control plat to show at the same time, have reduced traditional electricity-Contact-type control system of intermediate link. It reduce the hardware and control line, has improved systematic stability, dependability greatly.