|转至：电工之家
昨天,工厂一台设备停了几天，一开机就跳配电房的断路器，而没有跳机器上的断路器。
维修人员又进行了第二次试送电，这是允许的，结果还是跳电。
维修人员开始找原因，拆线路测试，试了几次都跳电了，到中午了想换一台变频器试试，此时领导也坐不住了，打电话叫我去帮忙，我到了现场先问什么故障？说跳电。
我说跳电肯定有短路的地方，有万用表吗？于是找来万用表，先量每相对地电阻。对地电阻好的，再量三相之间的电阻，不好三相之间电阻是0点几欧姆，太小！
我一路一路关下面分断路器，结果到一个伺服驱动器的断路器关了就没有短路了，测量分断路器的下端有短路，断开电抗器的线，也没有短路，测量伺服驱器进线有短路，之前他们测量过电机是好的，电机线已经脱开。
好了 ，故障就在这儿很简单呀！
接下来就是换伺服驱动器的事情，接上24V电源，用面板拷贝参数，没有成功，我拿来电脑通过数据线读取参数，结果也不能读取，我试了下其他的伺服驱动器是可以的。
判定板子有问题了，换新的吧！实在不行从另一台机器上拷贝一下。从仓库找到了修好的驱动器，我担心修的时候参数有改动，不管了装上去再说，装好后开机正常，说明维修厂家给我们恢复了参数。
我赶紧用电脑备份下来。
说实在的这问题太简单了！为什么耗时4小时还要我去?
专栏：行业资讯
作者：
行业资讯
来源：
行业资讯
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