Technical specifications
14.2 Electromagnetic compatibility
Distributed I/O system
274
System Manual, 12/2016, A5E03576849-AG
14.2
Electromagnetic compatibility
Definition
Electromagnetic compatibility (EMC) is the ability of an electrical installation to function
satisfactorily in its electromagnetic environment without interfering with that environment.
Among other things, the ET 200SP distributed I/O system also meets the requirements of the
EMC legislation for the European single market. The prerequisite is that the ET 200SP
distributed I/O system complies with the requirements and guidelines relating to electrical
equipment.
EMC in accordance with NE21
The ET 200SP distributed I/O system meets the EMC specifications of the NAMUR
recommendation NE21.
Pulse-shaped disturbance variables of the ET 200SP system
The table below shows the electromagnetic compatibility of the ET 200SP distributed I/O
system with regard to pulse-shaped disturbance variables.
Table 14- 2 Pulse-shaped disturbance variables
Pulse-shaped disturbance variable Tested with
Equivalent to
severity
Electrostatic discharge in accord-
ance with IEC 61000-4-2
Air discharge ±8 kV
Contact discharge: ±6 kV
3
3
Burst pulses (fast transients) in
accordance with IEC 61000-4-4
±2 kV (power supply line)
±2 kV (signal line >30 m)
±1 kV (signal cable <30 m)
3
3
High-energy single pulse (surge) in accordance with IEC 61000-4-5
External protective circuit required (see Function manual Designing interference-
free controllers (
http://support.automation.siemens.com/WW/view/en/59193566
3
•
Asymmetric coupling
±2 kV (power supply lines)
DC with protective elements
±2 kV (signal lines/data lines only >30 m) with
protective elements if necessary
•
Symmetric coupling
±1 kV (power supply line) DC with protective
elements
±1 kV (signal line/data line only >30 m) with
protective elements if necessary
Содержание Simantic ET200SP
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