Electromagnetic Compatibility - Siemens SIMATIC CPU 1515SP PC2 F User Manual

12.2

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.
The CPU 1515SP PC2 meets the requirements of the EMC legislation for the European
single market, among other requirements. The prerequisite for this is that the
CPU 1515SP PC2 complies with the specifications and guidelines relating to electrical
configuration.
EMC according to NE 21
The CPU 1515SP PC2 meets the EMC specifications of NAMUR guideline NE 21.
Pulse-shaped disturbance
The following table shows the electromagnetic compatibility of the CPU 1515SP PC2 with
regard to pulse-shaped disturbances.
Table 12- 1
Pulse-shaped disturbance
Electrostatic discharge according
to IEC 61000-4-2.
Burst pulses (high-speed transient
disturbance) according to
IEC 61000-4-4.
High-energy single pulse (surge) according to IEC 61000-4-5
External protective circuit required (see function manual
Designing interference-free controllers
(http://support.automation.siemens.com/WW/view/en/59193566))
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•
CPU 1515SP PC2 (F/T/TF)
Operating Instructions, 09/2018, A5E42603425-AA
Pulse-shaped disturbance
asymmetric coupling
symmetric coupling
Test voltage
Air discharge: ±8 kV
Contact discharge ± 4 kV
±2 kV (power supply lines)
±2 kV (signal lines > 30 m)
±1 kV (signal lines < 30 m)
±2 kV (power supply lines)
DC with protective elements
±2 kV (signal/data line only > 30 m), with pro-
tective elements
±1 kV (power supply lines) DC with protective
elements
±1 kV (signal/data line only > 30 m), with pro-
tective elements
Technical specifications
12.2 Electromagnetic compatibility
corresponds to
degree of se-
verity
3
3
3
3
3
71