Siemens SIMATIC RF300 System Manual page 114

Planning the RF300 system
4.6 Guidelines for electromagnetic compatibility (EMC)
Coupling paths
A coupling path has to be present before the disturbance emitted by the interference source can
affect the system. There are four ways in which interference can be coupled in:
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Figure 4-10
When RFID modules are used, different components in the overall system can act as a coupling
path:
Table 4-77
Coupling path
Cables and wires
Control cabinet or housing
114
Galvanic coupling path
Capacitive coupling path
Inductive coupling path
Radiation coupling
Ways in which interference can be coupled in
Causes of coupling paths
RFID
Reader
RFID
Reader
RFID
Reader
RFID
Reader
Invoked by
• Incorrect or inappropriate installation
• Missing or incorrectly connected shield
• Inappropriate physical arrangement of cables
• Missing or incorrectly wired equalizing conductor
• Missing or incorrect earthing
• Inappropriate physical arrangement
• Components not mounted securely
• Unfavorable cabinet configuration
System Manual, 02/2021, C79000-G8976-C345-09
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SIMATIC RF300