西门子840Dsl数控系统维修

一、西门子PCU维修 显示器黑屏维修案例：

1.故障现象：

沈阳机床厂生产的数控二轴深孔钻床，西门子840D系统带PCU50，面板为OP10c，在开机状态下，显示器突然黑屏，开始以为显示屏进入待机状态，但之后按任意键无法激活屏幕，重启机床也无法点亮显示器。

2.故障分析：

该机床在未断电状态下突然黑屏，屏幕上无任何信息，而MCP和NCU上的指示灯都显示正常，按下MCP上的键，机床能正常响应。说明机床控制部分并无大碍。

3.处理方法：

①先检查PCU50的供电单元，测量PCU50电源模块的输入电压为+24V左右.与理论电压一致，说明供电正常。

②将个人电脑的显示器外接在PCU50的VGA接口上，发现能点亮，并能正常进人操作界面。因此判断西门子840D的OP单元损坏。

4.结论：

PCU50实际就是一台不太高档但很稳定的PC机，在遇到可能是PCU50故障的情况时，要充分利用Pc机的资源和知识。

二、除了西门子PCU维修 显示器黑屏维修，PCU50作为整个数控系统中的重要组成部分，故障率高。其他故障问题，

西门子PCU50主机维修型号：

6FC5210-0DF01-0AA0维修 PCU50 6FC5210-0DF01-0AA0维修 810D/840D维修

6FC5210-0DF02-0AA0维修 PCU 50, HMI 6FC5210-0DF02-0AA0维修 810D/840D维修

6FC5210-0DF03-0AA0维修 PCU 50 6FC5210-0DF03-0AA0维修 810D/840D维修

6FC5210-0DF04-0AA0维修 PCU 70, WIN 6FC5210-0DF04-0AA0维修

6FC5210-0DF05-0AA0维修 PCU 50, WIN 6FC5210-0DF05-0AA0 810D/840D维修

6FC5210-0DF20-0AA0维修 PCU 50 566MHZ, NT4.0 6FC5210-0DF20-0AA0维修

6FC5210-0DF21-0AA0维修 PCU 50 566MHZ, NT4.0 6FC5210-0DF21-0AA0维修

6FC5210-0DF21-2AA0维修 PCU 50 566MHZ, WIN XP 6FC5210-0DF21-2AA0维修

6FC5210-0DF22-0AA0维修 PCU 50 1,2GHZ, NT4.0 6FC5210-0DF22-0AA0维修

6FC5210-0DF22-1AA0维修 PCU50 1,2GHZ, WIN2000 6FC5210-0DF22-1AA0维修

6FC5210-0DF22-2AA0维修 PCU50 1,2GHZ, WIN XP 6FC5210-0DF22-2AA0维修

6FC5210-0DF23-2AA0维修 PCU 50 566MHZ, WIN XP 6FC5210-0DF23-2AA0维修

6FC5210-0DF00-0AA0 PCU 20, 166MHZ/16MB 6FC5210-0DF00-0AA0

6FC5210-0DF00-0AA1 PCU20 SPC 166MHZ/32MB 6FC5210-0DF00-0AA1

6FC5210-0DF00-0AA2 PCU20 SPC 266MHZ/32MB 6FC5210-0DF00-0AA2

6FC5210-0DF00-1AA0 PCU 20, 233MHZ/32MB 6FC5210-0DF00-1AA0

6FC5210-0DF00-1AA1 PCU20 SPC 233MHZ/32MB 6FC5210-0DF00-1AA1

6FC5210-0DF00-1AA2 PCU20 SPC 333MHZ/32MB 6FC5210-0DF00-1AA2

6FC5210-0DF01-0AA0 PCU50 6FC5210-0DF01-0AA0 810D/840D

6FC5210-0DF02-0AA0 PCU 50, HMI 6FC5210-0DF02-0AA0 810D/840D

6FC5210-0DF03-0AA0 PCU 50 6FC5210-0DF03-0AA0 810D/840D

6FC5210-0DF04-0AA0 PCU 70, WIN 6FC5210-0DF04-0AA0

6FC5210-0DF05-0AA0 PCU 50, WIN 6FC5210-0DF05-0AA0 810D/840D

6FC5210-0DF20-0AA0 PCU 50 566MHZ, NT4.0 6FC5210-0DF20-0AA0

6FC5210-0DF21-0AA0 PCU 50 566MHZ, NT4.0 6FC5210-0DF21-0AA0

6FC5210-0DF21-2AA0 PCU 50 566MHZ, WIN XP 6FC5210-0DF21-2AA0

6FC5210-0DF22-0AA0 PCU 50 1,2GHZ, NT4.0 6FC5210-0DF22-0AA0

6FC5210-0DF22-1AA0 PCU50 1,2GHZ, WIN2000 6FC5210-0DF22-1AA0

6FC5210-0DF22-2AA0 PCU50 1,2GHZ, WIN XP 6FC5210-0DF22-2AA0

6FC5210-0DF23-2AA0 PCU 50 566MHZ, WIN XP 6FC5210-0DF23-2AA0

6FC5210-0DF24-0AA0 PCU70 1,2GHZ, WIN NT 6FC5210-0DF24-0AA0

6FC5210-0DF24-2AA0 PCU70 1,2GHZ, WIN XP 6FC5210-0DF24-2AA0

6FC5210-0DF25-2AA0 PCU50 1,2GHZ, WIN XP 6FC5210-0DF25-2AA0

6FC5210-0DF31-2AA0 PCU50.3-C, WINXP 6FC5210-0DF31-2AA0

6FC5210-0DF33-2AA0 PCU50.3-P, WINXP 6FC5210-0DF33-2AA0