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6ES7901.0BF00.0AA0 参数 Datasheet PDF下载

6ES7901.0BF00.0AA0图片预览
型号: 6ES7901.0BF00.0AA0
PDF下载: 下载PDF文件 查看货源
内容描述: SIMATIC HMI触摸屏TP 070 [SIMATIC HMI Touch Panel TP 070]
分类和应用:
文件页数/大小: 80 页 / 400 K
品牌: SIEMENS [ Siemens Semiconductor Group ]
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ESD Guidelines  
Handling ESD assemblies  
A general rule is that assemblies should be touched only when this cannot be  
avoided owing to the work that has to performed on them. Under no circumstances  
should you handle printed-circuit boards by touching device pins or circuitry.  
You should touch devices only if  
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you are grounded by permanently wearing an ESD wrist strap or  
you are wearing ESD shoes or ESD shoe-grounding protection straps in  
conjunction with an ESD floor.  
Before you touch an electronic assembly, your body must be discharged. The  
simplest way of doing this is to touch a conductive, grounded object immediately  
beforehand – for example, bare metal parts of a cabinet, water pipe etc.  
Assemblies should not be brought into contact with charge-susceptible and highly  
insulating materials such as plastic films, insulating table tops and items of clothing  
etc. containing synthetic fibers.  
Assemblies should be deposited only on conductive surfaces (tables with an ESD  
coating, conductive ESD cellular material, ESD bags, ESD shipping containers).  
Do not place assemblies near visual display units, monitors or television sets  
(minimum distance to screen > 10 cm).  
Measuring and modifying ESD assemblies  
Perform measurements on ESD assemblies only when  
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the measuring instrument is grounded – for example, by means of a protective  
conductor – or  
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the measuring head has been briefly discharged before measurements are  
made with a potential-free measuring instrument – for example, by touching a  
bare metal control cabinet.  
When soldering, use only grounded soldering irons.  
Shipping ESD assemblies  
Always store and ship assemblies and devices in conductive packing – for  
example, metallized plastic boxes and tin cans.  
If packing is not conductive, assemblies must be conductively wrapped before they  
are packed. You can use, for example, conductive foam rubber, ESD bags,  
domestic aluminum foil or paper (never use plastic bags or foils).  
With assemblies containing fitted batteries, make sure that the conductive packing  
does not come into contact with or short-circuit battery connectors. If necessary,  
cover the connectors beforehand with insulating tape or insulating material.  
TP070 Equipment Manual  
Release03/00  
C-2  
 
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