Cable Shielding - Siemens SIMATIC RF600 System Manual

Rfid system in the uhf frequency range

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● When connecting the equipotential bonding conductors to the centralized equipotential

● The equipotential bonding conductors of the separate modules must lead directly to the

Figure 4-12

The better the equipotential bonding in a plant, the smaller the chance of interference due to

fluctuations in potential.

Equipotential bonding should not be confused with protective earthing of a plant. Protective

earthing prevents the occurrence of excessive shock voltages in the event of equipment

faults whereas equipotential bonding prevents the occurrence of differences in potential.

4.7.7

Cable shielding

Signal cables must be shielded in order to prevent coupling of interference.

The best shielding is achieved by installing the cables in steel tubes. However, this is only

necessary if the signal cable is routed through an environment prone to particular

interference. It is usually adequate to use cables with braided shields. In either case,

however, correct connection is vital for effective shielding.

Note

An unconnected or incorrectly connected shield has no shielding effect.

SIMATIC RF600

System Manual, 05/2012, J31069-D0171-U001-A13-7618

bonding strip (EBS), the power components and non-power components must be

combined.

equipotential bonding strip.

Equipotential bonding (EBS = Equipotential bonding strip)

4.7 Guidelines for electromagnetic compatibility (EMC)

RF600 system planning

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