Siemens S7-400 Benutzerhandbuch

1-10

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

The following table shows the electromagnetic compatibility of modules when there
are pulse-shaped disturbance variables. A requirement for this is that the
S7-400/M7-400 system complies with the relevant requirements and guidelines on
electric design.

Table 1-4

Pulse-Shaped Interference

Electrostatic discharge
To IEC 61000-4-2

Discharge to air:      

±

8 kV

Contact discharge:  

±

6 kV

3

Bursts (fast transient interference in accor-
dance with IEC 61000-4-4)

2 kV (power supply line)
2 kV (signal line > 30 m)
1 kV (signal line < 30 m)

3

Energy-rich single impulse (surge) to IEC 61000-4-5

3

•

Asymmetrical coupling

2 kV (supply line) DC voltage with
protective elements
2 kV (signal line/data line > 30 m only),
possibly with protective elements

•

Symmetrical coupling

1 kV (supply line) DC voltage with
protective elements
1 kV (signal line > 30 m only), possibly
with protective elements

The following table shows you the EMC behavior of the S7-400/M7-400 modules
when there is sinusoidal interference.

Table 1-5

Sinusoidal Interference

RF irradiation (electromagnetic fields)
To IEC 61000-4-3

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

RF conductance on cables and cable
shields to IEC 61000-4-6

Test voltage 10 V with 80% amplitude
modulation of 1 kHz over the range from 9 MHz
to 80 MHz

3