MP 277 - Service, Support Download

Transcript
Safety instructions and approvals
2.4 Electromagnetic compatibility
2.4
Electromagnetic compatibility
Introduction
The HMI device fulfills, among other things, the requirements of the EMC law pertaining to
the domestic European market.
EMC-compatible installation of the HMI device
The EMC-compliant installation of the HMI device and the application of interference-proof
cable is the basis for interference-free operation. The "Directives for interference-free
installation of PLCs" and the "PROFIBUS Networks" manual also apply for the installation of
the HMI device.
Pulse-shaped disturbance
The following table shows the electromagnetic compatibility of modules with regard to pulseshaped interference. The precondition for electromagnetic compatibility is that the HMI
device meets the specifications and guidelines for electrical installation.
Pulse-shaped disturbance
Tested with
Degree of severity
Electrostatic discharge
in accordance with
IEC 61000-4-2
Air discharge: 8 kV
Contact discharge: 6 kV
3
Burst pulses
(high-speed transient
interference)
in accordance with
IEC 61000-4-4
2 kV power supply cable
2 kV signal cable, > 30 m
1 kV signal cable, < 30 m
3
High-power surge pulses in accordance with IEC 61000-4-5, external protective circuit required (refer
to the manual Automation System S7-300, Installation, "Lightning and overvoltage protection"
section)
Asymmetrical coupling
2 kV power cable
DC voltage with protective elements
3
2 kV signal/data cable, > 30 m,
with protective elements as required
Symmetrical coupling
1 kV power cable
DC voltage with protective elements
3
1 KV signal cable, > 30 m,
with protective elements as required
Pulse-shaped disturbance
Magnetic field strength 50/60 Hz, 100 A/m
3
Magnetic fields with power
frequencies according to
IEC 61000-4-8
MP 277
Operating Instructions, 07/2014, A5E02479740-02
31
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