Siemens Simatic S7-300, Инструкция по установке и эксплуатации

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General technical data
7.3 Electromagnetic Compatibility
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
63
Pulse-shaped interference
The table below shows the EMC of fail-safe modules in terms of pulse-shaped interference.
The S7-300/M7-300/ET 200M system must comply with electrical installation specifications
and guidelines.
Note
Not suitable for use in residential areas.
Use in residential areas is possible if suitable additional measures are taken to achieve limit
class B.
Pulse-shaped interference Test voltage Degree of severity
Electrostatic discharge to
IEC 61000-4-2 (DIN VDE 0843 Part 2) 8 kV
6 kV 3 (air discharge)
3 (contact discharge)
Burst pulse (high-speed transient
interference) to IEC 61000-4-4
(DIN VDE 0843 Part 4)
2 kV
(power supply lines)
2 kV
(signal line)
3
4
Surge pulse to IEC 61000-4-5 (DIN VDE 0839 Part 10)
No external protective circuit required (cf. operating instructions
S7-300,
CPU 31xC and CPU 31x: Installation
, chapter "Lightning and surge
voltage protection")*
Asymmetrical coupling
Symmetrical coupling
1 kV
(power supply lines)
1 kV
(signal line)
data line)
0.5 kV
(power supply lines)
0.5 kV
(signal line)
data line)
2*
*External protective circuit required for severity level 3. Test value for asymmetrical coupling = 2 kV;
for symmetrical coupling = 1 kV.