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Siemens S5-135U/155U User Manual

Page 31

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3-5

System Manual
C79000-G8576-C199-06

Coupling Mechanism

Typical Interference Sources

Cause

S

Radiated Interference

There is a radiation path when a

d

i

bj

d

S

Local transmitters
(

di )

SIMATIC S5

Interference

Radiation Path

conductor is subjected to an
electromagnetic wave.
Impinging of the wave results in
induced currents and voltages.

(e.g. two-way radios)

S

Spark gaps (spark plugs,
collectors in electric motors,
welders)

Installation Guidelines