电牵引采煤机采用机载式交流变频调速牵引,其电控系统故障率占整机故障的80％。最近,兖州矿业(集团)公司东滩煤 矿在分析电牵引采煤机电气系统原理、信号流程的基础上,总结出了常见电气故障的诊断思路。 采煤机不牵引:液晶显示器或功能显示器绿灯不亮,说明无牵引信号输入,故障部位可能是端头站或按钮板;绿灯亮而红 Electric traction shearer adopts on-board AC frequency control traction, the failure rate of its electronic control system accounts for 80% of the total fault. Recently, Yanzhou Mining (Group) Company Dongtan Coal Mine in the analysis of electric traction shearer electrical system principle, the signal flow, based on the summed up the common electrical fault diagnosis. Shearer does not draw: green indicator or function indicator does not light, indicating no traction signal input, the fault site may be the terminal station or button board; green light and red