Siemens SIMATIC HMI Mobile Panel 277 RO Operating Instructions Manual page 30

Safety instructions and general notes
2.9 Electromagnetic compatibility
Sinusoidal interference
The following table shows the EMC behavior of the modules with respect to sinusoidal
interference. This requires the HMI device to meet the specifications and directives for
electrical installation.
Sinusoidal interference
HF radiation
(in electromagnetic fields) in
accordance with IEC 61000-4-3
HF conductance on cables and
cable shields in accordance
with IEC 61000-4-6
Emission of radio interference
The following table shows the unwanted emissions from electromagnetic fields in
accordance with EN 55011,
Limit Value Class A, Group 1, measured at a distance of 10 m.
From 30 to 230 MHz
From 230 to 1000 MHz
Additional measures
Before you connect an HMI device to the public network, ensure that it is compliant with
Limit Value Class B in accordance with EN 55022.
30
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, with 80% amplitude modulation of
1 kHz in the 10 kHz to 80 MHz range
< 40 dB (V/m) quasi-peak
< 47 dB (V/m) quasi-peak
Operating Instructions, 10/2015, A5E36824256-AA
Degree of
severity
3
3
Mobile Panel 277 RO