Eaton Crouse-Hinds Series Instruction Manual

Also see for Crouse-hinds series: Operating instructions Instruction manual Operating instructions Operating instructions Instruction manual

Contents

Eaton Crouse-Hinds Series Instruction Manual Manual pdf 14 page image

DRAFT - 20 November 2014INM 9370-SS Rev 7104.4 Trunk Terminator module 9378-FTIf the enclosure provides the last (or only) spur connections on the segment, the trunkmust be terminated correctly to ensure that the optimum signal quality is maintained. TheTrunk Termination Assembly (TTA) has provision for an 9378-FT Terminator module to befitted when required.NOTEA terminator should be used only at the end points of the trunk wiring.Connecting a terminator at any other point on the trunk will degrade thesignal.The 9378-FT is a two-pin module that plugs into the upper end face of the TrunkTerminator Assembly. See Section 5.3 for fitting and removal details.4.5 Trunk Surge module 9376-SPThe 9376-SP Trunk Surge module can be fitted to the TTA to prevent damage to theequipment from voltage and current surges that could occur on the trunk wiring.The 9376-SP is a four pin module that plugs into the upper end face of the TrunkTerminator Assembly. See Section 5.4 for fitting and removal details.4.6 Spur connectionsRefer to Figures 4.6 for additional details.The spur cables can be connected directly onto the fieldbus barrier carrier or through aSpur Surge module (FS32).If Spur Surge modules are not being used, sub-section 4.6.2 can be ignored.4.6.1 Connecting the spur cablesPrepare the spur cables in accordance with the gland manufacturer’s instructions andsecure the cables in the glands.IMPORTANT• When fitting the cable in the gland allow 20 – 30mm of available cable length outsidethe enclosure to allow for cable adjustment if a Spur Surge module is taken out ofcircuit inside the enclosure. See Section 5.5.1 for further details• Cable ferrules must be fitted to any stranded cable or screen wiring that is being used.Connect the prepared ends of the fieldbus spur cables into the ‘+’, ‘S’ and ‘–’ terminalson the carrier (or surge module, if fitted), making sure that the same polarity isobserved for all spurs.4.6.2 Fitting FS32 Spur Surge modulesSpur Surge modules are pluggable units that integrate easily with the standard pluggableconnector and which direct excessive spur surge currents to the protective local ground.Figure 4.7 - FS32 Spur Surge module on carrier