Name: Siemens SIMATIC S7-300 Module data
Brand: Siemens
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E-2

Programmable Logic Controllers S7-300 Module Data

A5E00105505-03

E.1 What is ESD?

Definition

All electronic modules are equipped with large-scale integrated ICs or components.

Due to their design, these electronic elements are very sensitive to overvoltages

and thus to any electrostatic discharge.

The abbreviation ESD has been introduced for these Electrostatic Sensitive

Devices/Modules. The designation ESD is used internationally for electrostatic

sensitive device.

Electrostatic sensitive devices are labeled with the following symbol:

Caution

Electrostatic sensitive devices are subject to voltages that are far below the

voltage values that can still be perceived by human beings. These voltages are

present if you touch a component or the electrical connections of a module without

previously being electrostatically discharged. In most cases, the damage caused

by an overvoltage is not immediately noticeable and results in total damage only

after a prolonged period of operation.

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