Siemens SIMATIC S7-1200 System Manual page 1364

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Technical specifications

A.2 General technical specifications

Electromagnetic compatibility - Conducted and radiated emissions per EN 61000-6-4

Conducted Emissions

EN 55016, Class A, Group 1

Radiated Emissions

EN 55016, Class A, Group 1

Surge immunity

Wiring systems subject to surges from lightning strike coupling must be equipped with

external protection. One specification for evaluation of protection from lightning type surges

is found in EN 61000-4-5, with operational limits established by EN 61000-6-2. S7-1200 DC

CPUs and signal modules require external protection to maintain safe operation when

subject to surge voltages defined by this standard.

Listed below are some devices that support the needed surge immunity protection. These

devices only provide the protection if they are properly installed according to the

manufacturer's recommendations. Devices manufactured by other vendors with the same or

better specifications can also be used:

+24 V DC power

Industrial Ethernet

+24 V DC digital inputs

+24 V DC digital outputs

and sensor supply

Relay outputs

Conducted and radiated emissions per EN 61000-6-4

0.15 MHz to 0.5 MHz

0.5 MHz to 5 MHz

5 MHz to 30 MHz

30 MHz to 230 MHz

230 MHz to 1 GHz

1 GHz to 3 GHz

Devices that support surge immunity protection

Protection device

BLITZDUCTOR VT, BVT AVD 24, Part Number 918 422

DEHNpatch DPA M CLE RJ45B 48, Part Number 929 121

BLITZDUCTOR XT, Basic Unit BXT BAS, Part Number 920 300

BLITZDUCTOR XT, Module BXT ML2 BD HFS 5, Part Number 920 271

BLITZDUCTOR XT, Basic Unit BXT BAS, Part Number 920 300

BLITZDUCTOR XT, Module BXT ML2 BE S 12, Part Number 920 222

DEHN, Inc., Type DCO SD2 E 24, Part Number 917 988

DEHN, Inc., Type DCO SD2 E 12, Part Number 917 987

None required

<79dB (μV) quasi-peak; <66 dB (μV) average

<73dB (μV) quasi-peak; <60 dB (μV) average

<40dB (μV/m) quasi-peak; measured at 10m

<47dB (μV/m) quasi-peak; measured at 10m

< 76dB (uV/m) quasi peak, measured at 10m

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK

Siemens SIMATIC S7-1200 System Manual page 1364

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