1746-HSCE罗克韦尔~¥IC693CHS393RR
发布时间:2018-10-16 21:15:44点击率:
1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR1746-HSCE罗克韦尔~¥IC693CHS393RR
PCU柜内5VDC系统电源电压不正常。电源系统底板上5VDC电压测量值一般在5.10~5.20VDC之间,但进入卡件时很多柜子的电压却在5V以下,三号机曾有三个控制柜的电压跌至4.76VDC左右,引起部分I/O卡不能正常工作。经检查发现电源底板与旁边的电源母线之间的连接电缆存在较大的压降,认为是由于电缆的多芯铜线时间一久表面氧化与线鼻子之间接触不良引起的。处理方法是在机组大修期间对所有5VDC电缆的铜线与线鼻子之间进行焊接处理,使所有的铜线与线鼻子焊接在一起,经检测考验,效果比较理想,压降可保持在0.01~0.02VDC之间。
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