Appendix
A.1 ESD guideline
MP 377 15" Touch daylight readable (WinCC flexible)
60
Operating Instructions (Compact), 04/2009, A5E02532357-01
Anyone who is not connected to the electrical potential of their surroundings is subject to
electrostatic charge.
The following figure indicates the maximum electrostatic charge anyone is subjected to when
coming into contact with the materials shown. These values correspond to IEC 801-2
specifications.
9R
OW
D
J
H
5HODWLYHKXPLGLW\
>@
>N9@
①
Synthetic materials
②
Wool
③
Antistatic materials such as wood or concrete
Protective measures against discharge of static electricity
CAUTION
Grounding measures
No equipotential bonding is possible without ground. Electrostatic charges will not be
discharged and may damage the ESD.
When working with electrostatic sensitive devices, make sure that the person, the
workplace and the packaging are properly grounded.
As a rule, only touch the ESD if this is unavoidable. This may be the case for maintenance.
When you touch ESD modules, avoid touching the pins or the PCB tracks. This measure
prevents discharged energy from reaching and damaging components sensitive to voltage.
Discharge electrostatic electricity from your body if you are performing measurements on an
ESD. Do so by touching grounded metallic parts.
Always use grounded measuring instruments.
