Siemens SIMATIC HMI Operating Instructions Manual page 74

Safety Instructions and General Notes
2.4 Electromagnetic compatibility
Pulse-shaped Interference
The table below shows the electromagnetic compatibility of modules in relation to pulse-
shaped interference. This requires the device to meet the specifications and directives for
electrical installation.
Pulse-shaped
interference
Electrostatic discharge
according to
IEC 61000-4-2
Burst pulses
(high-speed transient
interference)
according to
IEC 61000-4-4
High-power surge pulses according to IEC 61000-4-5, external protective circuit required (refer to S7
300 PLC, Installation, chapter "Lightning and Overvoltage Protection").
Asymmetric coupling
Symmetric coupling
Sinusoidal interference
The table below shows the EMC properties of the modules with respect to sinusoidal
interference. This requires the device to meet the specifications and directives for electrical
installation.
Sinusoidal interference
HF radiation
(electromagnetic fields)
according to
IEC 61000-4-3
RF interference current
on cables and cable
shielding conforming to
IEC 61000-4-6
76
Tested with
Air discharge: 8 kV
Contact discharge: 6 kV
2 kV power supply cable
2 kV signal cable, > 30 m
1 kV signal cable, < 30 m
2 kV power cable
DC voltage with protective elements
2 kV signal/data cable, > 30 m,
with protective elements as required
1 kV power cable
DC voltage with protective elements
1 kV signal cable, > 30 m,
with protective elements as required
Test values
80% amplitude modulation at 1 kHz
•
with 10 V/m in the range of 80 MHz to 1 GHz
with 3 V/m in the range 1.4 GHz to 2 GHz
with 1 V/m the range 2 GHz to 2.7 GHz
10 V/m with 50 % pulse modulation at 900 MHz
•
10 V/m with 50 % pulse modulation at 1.89 GHz
Test voltage 10 V at 80% amplitude modulation of
1 kHz in the range from 9 kHz to 80 MHz
Corresponds to test
intensity
Operating Instructions, 09/2007, A5E00471973-02
3
3
3
3
Corresponds to
test intensity
3
3
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