Siemens S5-135U/155U - Page 31

3-5
System Manual
C79000-G8576-C199-06
Coupling Mechanism Typical Interference SourcesCause
 Radiated Interference There is a radiation path when a
d i bj d
 Local transmitters
(di)
SIMATIC S5
Interference
Radiation Path
conductor is subjected to an
electromagnetic wave.
Impinging of the wave results i
n
induced currents and voltages.
(e.g. two-way radios)
 Spark gaps (spark plugs,
collectors in electric motors,
welders)
Installation Guidelines