MMS6110 MMS6110 MMS6110 MMS6110 MMS6110
外围线路故障
据有关文献报道,在PLC控制系统中出现的故障率为:CPU及存储器占5%,I/O模块占15%,传感器及开关占45%,执行器占30%,接线等其他方面占5%,可见80%以上的故障出现在外围线路。
外围线路由现场输入信号(如按钮开关、选择开关、接近开关及一些传感器输出的开关量、继电器输出触点或模数转换器转换的模拟量等)和现场输出信号(电磁阀、继电器、接触器、电机等),以及导线和接线端子等组成。
接线松动、元器件损坏、机械故障、干扰等均可引起外围电路故障,排查时要仔细,替换的元器件要选用性能可靠系数高的器件。
一些功能强大的控制系统采用故障代码表表示故障,对故障的分析排除带来便利,应好好利用。
西门子PLCPLC控制系统在工业机器运用中是很重要的,所以对其容易出现的故障要了解,常见故障判断和处理方法与此原理相同可依次类推。
粤为君在这里提醒大家一下:任何芯片级精密设备遇到故障时,在没有十足把握情况下,要请专业的技术服务企业予以处理,擅自改动程序和维修紧密设备电路板可能会造成设备维修难度加大甚至报废的严重后果。
所以这就要求技术人员要越来越高,越来越专业。也就意味着我们要学习更多的技术,提升自己,才能的为企业谋福利。
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