Installing the Bridge Hardware
20
2.6CEInstallation Requirements
If the bridge isbeing installed atasitethatmustmeetCErequirements, the
following stepsmustbe taken tocompletethe installation.
Grounding
The bridge mustbe provided withadirectground connection of0.1 ohmorless.
Mounting the bridge on a suitablygrounded panelasdescribed inSection 2.4
satisfiesthisrequirement.
Inaddition the ModbusPlus cablemustbe grounded tothe panelusing the ground
wirethatisintegraltothe cable.
FerriteBeadonRF--45Cable
Ifthe Ethernetnetworkisbeing connected tothe 10Base--T(RJ--45)connector,an
approved ferrite bead mustbe installed on the cable at the connector.
Theapproved bead showninFigure 9 and inTable 10 isenclosed ina plasticbox
whichcan be clipped overthe network cable. Itisnotnecessarytoinsert the
cablethrough the bead beforeyou install the RJ--45connectoron the cable.
Figure9 FerriteBeadonRJ--45Cable(CERequirement)
28A2029--0A0
32mm
22mm
CableTie
preventsbead
fromslipping
FerriteBead12mm
Table 10 Approved FerriteBead
Manufacturer
(orEquivalent) Locationand
TelephonePartNumber
Steward Livingston,Scotland,UK
0044--1--506--414--200 28A2029--0A0