Siemens CP 1515 Instructions d'exploitation Page 23

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Commissioning
Operating Instructions SCALANCE W 744-1PRO
C79000-G8976-C185-03
23
3.3 Cabling for Power Supply and Ethernet
3.3.1 General Notes
Suitable Cables
The following cable variants are available to connect a SCALANCE W-700 to the
power supply and to Ethernet:
IE hybrid cable 2x2 + 4x0,34 (order no. 6XV1870-2J)
The two data wire pairs are separately shielded. This cable is particularly suit-
able for assembly with the IE IP67 hybrid connector.
IE FC TP standard cable 4x2 GP (order no. 6XV1870-2E)
IE FC TP flexible cable 4x2 GP (order no. 6XV1870-2H)
In these cable types, two wires are twisted. All for pairs of wires are inside a
common shield.
Cable Selection and Interference Exposure
A decisive factor in the selection of a cable type is the electromagnetic interference
to which the current lines between the power supply and the FC RJ-45 modular
outlet are subjected. Due to the separate shielding of the data wires, such interfer-
ence has less effect on the data transmission on a hybrid cable than on TP stan-
dard cable or TP flexible cable.
A B C
Figure 3-2 Cabling a SCALANCE W700 with electromagnetic interference injection
between the power supply and modular outlet
A Power supply
B FC RJ-45 modular outlet with power insert
C SCALANCE 788 / 744
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