Ethernet Connection In The Operator Panel - Beijer Electronics iX T15C Installation Manual

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Note:
The grounding wires should be short and the conductor should have a large area.
A long, thin grounding wire has a very high impedance (resistance) at high frequencies
and will not guide disturbances to the ground.
Multi-wire conductors are better than single wire conductors with the same area.
A braided conductor wire with the same area is even better. The best is a short, thick
grounding braid.
7.2
Ethernet Connection in the
Operator Panel
Shielded
0.1 μF
250 V
In some industrial units for Ethernet, the RJ45 contact's shield is connected to the
chassis via a capacitor, see 1 in drawing above.
The operator panel's Ethernet shield is directly connected to the chassis, see 2 in
drawing above.
1. Check whether the other Ethernet unit has its shield directly grounded or
grounded via a capacitor.
Note:
In many cases, connecting the shielded Ethernet cabling to the chassis at both ends is
inappropriate. Hum or grounding loops can occur. Unshielded cabling may even result
in fewer communication errors.
Beijer Electronics, MAEN083D
3
4
Short and
unshielded
1-1
2-2
3-3
8-8
5
Additional Installation Tips
Industrial Ethernet
RJ45
RJ45
1
RJ45
RJ45
Operator panel
RJ45
2
Operator panel
RJ45
Operator panel
RJ45
Operator panel
RJ45
26

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