Siemens S5-135U/155U - Manual (Page 31)

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