Electromagnetic Compatibility - Siemens SIMATIC HMI OP 73micro Operating Instructions Manual

2.4

Electromagnetic compatibility

Introduction
The HMI device fulfills requirements of the EMC Directive of the domestic European market
and other requirements.
EMC-compliant installation of HMI devices
An EMC-compliant installation of the HMI device and the use of interference-proof cables
form the basis of trouble-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 interference
The following table shows the EMC properties of the modules with respect to pulse-shaped
interference. A requirement for this is that the HMI device meets the specifications and
directives regarding electrical installation.
Table 2-1
Pulse-shaped
interference
Electrostatic discharge
conforming to
IEC 61000-4-2
Burst pulses
(high-speed transient
interference)
conforming to
IEC 61000-4-4
High-power surge pulses conforming to IEC 61000-4-5, external protective circuit required (refer to
S7 300 PLC, Installation, chapter "Lightning and overvoltage protection").
•
•
OP 73micro, TP 177micro (WinCC flexible)
Operating Instructions, 09/2007, 6AV6691-1DF01-0AB0
Pulse-shaped interference
Tested with
Air discharge: 8 kV
Contact discharge: 4 kV
2 KV power supply cable
2 KV signal cable, > 30 m
1 KV signal cable, < 30 m
Asymmetric coupling
2 kV power cable
DC voltage with protective elements
2 KV signal/data cable, > 30 m,
with protective elements as required
Asymmetric coupling
1 kV power cable
DC voltage with protective elements
1 KV signal cable, > 30 m,
with protective elements as required
Safety instructions and general notes
2.4 Electromagnetic compatibility
Corresponds to test
intensity
3
3
3
3
23