Appendix; Esd Guidelines - Siemens SIMATIC HMI Operating Instructions Manual

Appendix

A.1

ESD guidelines

Meaning of ESD
All electronic modules are equipped with highly integrated modules or components. Based
on their design, these electronic components are highly sensitive to overvoltage and thus to
discharge of static electricity. These electronic components are therefore specially identified
as ESD.
Abbreviations
The following abbreviations are commonly used for electrostatic sensitive devices:
● ESD – Electrostatic Sensitive Devices/assemblies
● ESD – Electrostatic Sensitive Device as common international designation
Labels
ESD modules are labeled with the following symbol:
Figure A-1
Electrostatic charging
CAUTION
Electrostatic charging
ESDs may be destroyed by voltages well below the perception threshold of persons.
Voltages of this kind develop when a component or a connection is touched by a person
who is not grounded against static electricity. Usually, it is unlikely that damage to an ESD
as a result of overvoltage is detected immediately but may become apparent only after a
longer period of operation.
Prevent electrostatic charge of your body before you touch the ESD!
SIMATIC HMI Accessories
Operating Instructions, 09/2007, A5E00471973-02
ESD label
A
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