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General Technical Specifications
6.2
Electromagnetic compatibility
Definition
Electromagnetic compatibility is the ability of an electric device to function
satisfactorily in its electromagnetic environment without interfering with this
environment.
The ET 200X distributed I/O device complies with the requirements of the EMC
legislation of the European internal market. A requirement for this is that the ET
200 distributed I/O system meets the specifications and directives concerning
electrical installation.
Bus parameter settings for the PROFIBUS-DP
Note
To maintain the EMC values, you must increase the "Retry Limit" bus parameter to
at leas "3" in your configuration software (e.g. COM PROFIBUS or STEP 7) for
transmission rates of 500 kbps and 1.5 Mbps. Leave all the other bus
parameters as they are, in accordance with your selected bus profile.
Pulse-shaped interference
The following table shows the electromagnetic compatibility of the ET 200X
distributed I/O device with regard to pulse-shaped interference.
Pulse-shaped interference
Electrostatic discharge
to IEC 61000-4-2.
Burst pulses (fast transient interference) in ac-
cordance with IEC 61000-4-4.
Surge in accordance with IEC 61000-4-5
Only with lightning protection elements (refer to DP master manual)
S
Asymmetrical connection
S
Symmetrical connection
6-4
Tested with
Corresponds to
8 kV
3 (air discharge)
4kV
2 (contact
discharge)
2 kV (supply line)
1 kV (signal line)
2 kV (supply line)
2 kV (signal line/
data line)
1 kV (supply line)
1 kV (signal line/
data line)
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
severity
3
2
3
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