Technical specifications
8.2 Electromagnetic compatibility
KTP400 Basic, KTP600 Basic, KTP1000 Basic, TP1500 Basic
Operating Instructions, 08/2008, A5E01075587-01
81
Pulse-shaped disturbance
The following table shows the electromagnetic compatibility of modules with regard to pulse-
shaped interference. The precondition for electromagnetic compatibility is that the HMI
device meets the specifications and guidelines for electrical installation.
Pulse-shaped disturbance Tested with Degree of
severity
Electrostatic discharge
in accordance with IEC 61000-4-2
Air discharge: 8 kV
Contact discharge: 6 kV
3
Burst pulses
(high-speed transient interference)
in accordance with IEC 61000-4-4
2 kV power supply cable
2 kV signal cable, > 30 m
1 kV signal cable, < 30 m
3
High-power surge pulses in accordance with IEC 61000-4-5, external protective circuit required (refer
to the manual Automation System S7-300, Installation, "Lightning and overvoltage protection"
section)
Asymmetrical coupling 2 kV power cable
DC voltage with protective elements
2 kV signal/data cable, > 30 m,
with protective elements as required
3
Symmetrical coupling 1 kV power cable
DC voltage with protective elements
1 KV signal cable, > 30 m, with protective
elements as required
3
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 Test values Degree of
severity
HF radiation (in
electromagnetic fields) in
accordance with
IEC 61000-4-3
• 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
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 9 MHz to 80 MHz range
3
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 < 40 dB (V/m) quasi-peak
From 230 to 1000 MHz < 47 dB (V/m) quasi-peak
Additional measures
To connect an HMI device to the public electric network, you must ensure its compliance
with Limit Value Class B to EN 55022.
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