General Technical Specifications
1-7
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Additional measures
If you want to connect an S7-300 system to the public network, you must ensure
Limit Value Class B in accordance with EN 55022.
Sinusoidal interference
The table below shows the EMC behavior of the S7-300 modules with regard to
sinusoidal disturbance variables.
Table 1-3 Sinusoidal Interference
Sinusoidal Interference
Test values Satisfies
degree of
severity
HF irradiation (electromagnetic fields)
according to IEC 61000-4-3
according to IEC 61000-4-3
10 V/m with 80% amplitude modulation of 1 kHz
over the range from 80 MHz to 1000 MHz
10 V/m with 50% pulse modulation at 900 MHz
3
HF conductance on cables and cable
shields according to IEC 61000-4-6
Test voltage 10 V with 80% amplitude modula-
tion of 1 kHz over the range from 9 MHz to
80 MHz
3
Emission of radio interference
Interference emission of electromagnetic fields in accordance with EN 55011: Limit
value class A, Group 1.
From 30 to 230 MHz < 40 dB (V/m)Q
From 230 to 1000 MHz < 47 dB (V/m)Q
Measured at a distance of 10 m (98.4 ft.)
Interference emission via the mains AC power supply in accordance with
EN 55011: Limit value class A, Group 1.
From 0.15 to 0.5 MHz < 79 dB (V)Q
< 66 dB (V)M
From 0.5 to 5 MHz < 73 dB (V)Q
< 60 dB (V)M
From 5 to 30 MHz < 73 dB (V)Q
< 60 dB (V)M
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