Siemens SINUMERIK 808D 설치 매뉴얼 - 페이지 43

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Appendix

A.1

ESD Directive

A.1.1

What does ESD mean?

Definition

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 Electrostatic Sensitive Devices/Modules are commonly abbreviated ESD. The

common international designation ESD stands for Electrostatic Sensitive Device.

Electrostatic sensitive modules are identified by the following symbol:

Electrostatic sensitive devices may be destroyed by voltages that are undetectable to a

human. Voltages of this kind occur as soon as a component or an assembly is touched by a

person who is not grounded against static electricity. The damage to a module as a result

of overvoltage cannot usually be detected immediately. It may only become apparent after

a long period of operation.

Electrical Installation Manual

Operating Instructions, 12/2014, 6FC5397-2EP10-0BA0

CAUTION