KJ3001X1-BJ1 DO

KJ3001X1-BJ1 DO

KJ3001X1-BJ1 DO

根据多年维护经验，我们总结出了一套行之有效的故障判别及处理方法。 
1、查看监控画面的数据

　　出现以下情况时，说明控制系统发生问题，应立即通知微机维修人员维修，同时操作工到现场进行处理。

　　(1) 经常变化的数据长时间不变，且几个数据或所有数据都不变。 
　　(2) 控制分组画面中，手动自动无法切换，或手动输入数据后，一经确认，又恢复为原来的数据，修改不过来。 
　　(3) 趋势图画面中，几条趋势都为直线不变。 
　　(4) 监控画面中，多个数据同时波动较大。

公司地址：福建省厦门市思明区湖滨四里64号（湖光大厦）第八层A座
公司主营：Allen-Bradley（罗克韦尔）

abb、Siemens（西门子）、 _-_-- plc可编程控制器

Schneider（施耐德）、Westinghouse、Ge _-__- dcs集散式控制系统

判断波动数据是否为工艺上相关参数，若是相关参数则通知仪表及微机人员检查，看是否某调节系统波动引起相关参数变化，同时将相关调节系统打到手动状态，必要时到现场进行调节。如水溶液全循环装置中，尿素合成塔压力正常时为l9．67MPa，如果突然大范围波动，此时势必引起下游的中压系统、低压系统压力波动，这种情况是由于几个相关参数中某一参数波动引起其他参数变化，并不是控制系统本身故障。

　　若波动数据工艺上彼此并无直接影响，则可能为微机某卡件发生故障，立即将相关自调系统打到手动调节，必要时到现场进行调节，同时，通知微机及仪表人员检查。

　当发现多个自调系统失灵，监控画面上自调阀阀位在全开或全关位置，立即检查仪表气源压力，若气源压力小于0．4MPa，则不正常，检查气源管道有无堵塞或漏气现象；若气源压力小于0．2MPa，立即进行紧急停车。将监控画面上的自调系统全部打到手动，将调节阀阀位调到安全位置，通知仪表工检查气源，同时到现场进行操作，关闭调节阀两端的截止阀，用旁路阀操作。

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