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Installing the Bridge Hardware
20
2.6 CE Installation Requirements
If the bridge is being installed at a site that must meet CE requirements, the
following steps must be taken to complete the installation.
Grounding
The bridge must be provided with a direct ground connection of 0.1 ohm or less.
Mounting the bridge on a suitably grounded panel as described in Section 2.4
satisfies this requirement.
In addition the Modbus Plus cable must be grounded to the panel using the ground
wire that is integral to the cable.
Ferrite Bead on RF--45 Cable
If the Ethernet network is being connected to the 10Base--T (RJ--45) connector, an
approved ferrite bead must be installed on the cable at the connector.
The approved bead shown in Figure 9 and in Table 10 is enclosed in a plastic box
which can be clipped over the network cable. It is not necessary to insert the
cable through the bead before you install the RJ--45 connector on the cable.
Figure 9 Ferrite Bead on RJ--45 Cable (CE Requirement)
28A2029--0A0
32 mm
22 mm
Cable Tie
prevents bead
from slipping
Ferrite Bead
12 mm
Table 10 Approved Ferrite Bead
Manufacturer
(or Equivalent)
Location and
Telephone Part Number
Steward Livingston, Scotland, UK
0044--1--506--414--200
28A2029--0A0