Technical specifications
A.1 General technical specifications
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
135
The S7-1200 automation system is designed for use in industrial environments.
Table A- 1 Industrial environments
Electromagnetic compatibility
Electromagnetic Compatibility (EMC) is the ability of an electrical device to operate as
intended in an electromagnetic environment and to operate without emitting levels of
electromagnetic interference (EMI) that may disturb other electrical devices in the vicinity.
For safety related functions, additional EMC requirements are applied according to IEC
61326-3-1 and IEC 61326-3-2.
Table A- 2 Immunity per EN 61000-6-2
Electromagnetic compatibility - Immunity per EN 61000-6-2
EN 61000-4-2
Electrostatic discharge
8 kV air discharge to all surfaces
6 kV contact discharge to exposed conductive surfaces
EN 61000-4-3
Radiated, radio-frequency, electromagnet-
80 to 1000 MHz, 10 V/m, 80% AM at 1 kHz
1.4 to 2.0 GHz, 3 V/m, 80% AM at 1 kHz
2.0 to 2.7 GHz, 1 V/m, 80% AM at 1 kHz
EN 61000-4-4
2 kV, 5 kHz with coupling network to AC and DC system power
2 kV, 5 kHz with coupling clamp to I/O
EN 61000-4-5
Surge immunity
AC systems - 2 kV common mode, 1kV differential mode
DC systems - 2 kV common mode, 1kV differential mode
For DC systems (I/O signals, DC power systems) external protection is re-
quired. Refer to "Safe functional extra low voltage requirement (power supplies
and other system components)" (Page 90), "Surge immunity" for the recom-
mended protection devices.
EN 61000-4-6
150 kHz to 80 MHz, 10 V RMS, 80% AM at 1kHz
EN 61000-4-11
AC systems
0% for 1 cycle, 40% for 12 cycles and 70% for 30 cycles at 60 Hz
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