Safety instructions and general notes
2.4 Electromagnetic compatibility
OP 73micro, TP 177micro (WinCC flexible)
24 Operating Instructions, 09/2007, 6AV6691-1DF01-0AB0
Sinusoidal interference
The table below shows the EMC properties of the modules with respect to sinusoidal
interference. A requirement for this is that the HMI device meets the specifications and
directives regarding electrical installation.
Table 2-2 Sinusoidal interference
Sinusoidal interference Test values Corresponds to
test intensity
RF interference
(electromagnetic fields)
• conforming to
IEC 61000-4-3
• conforming to
IEC 61000-4-3
10 V/m with 80 % amplitude modulation of 1 kHz in the
range from 80 MHz to 1 GHz and 1.4 GHz to 2 GHz
10 V/m with 50% pulse modulation at 900 MHz
10 V/m with 50% pulse modulation at 1.89 GHz
3
RF interference current
on cables and cable
shielding conforming to
IEC 61000-4-6
Test voltage 10 V with 80% amplitude modulation of
1 kHz in the range from 9 kHz to 80 MHz
3
Emission of radio interference
Emission of electromagnetic interference conforming to 55011,
Limit value class A, Group 1, measured at a distance of 10 m:
From 30 to 230 MHz < 40 dB (V/m) quasi-peak
From 230 to 1000 MHz < 47 dB (V/m) quasi-peak
Additional measures
Before you connect an HMI device to the public network, ensure that it is compliant with Limit
Class B conforming to 55022.
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