Eaton 9372-FB-P Series Instruction Manual

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

Eaton 9372-FB-P Series Instruction Manual Manual pdf 7 page image

INM 9370-RD Rev 55Consequently, if a spur ‘fail-over’ occurs, an alarm is signalled quickly to the host,via the fieldbus connection, to facilitate any necessary remedial action. The fiveremaining spurs are available to the user for connection to field devices.Note: A redundant-capable version of the 9372-FB-Px-yy can also be supplied,part-populated with a single 6-spur module (order as model number 9375-FB-Px-yy). This permits a future upgrading from the simplex mode to a redundant modesimply by plugging in an additional Fieldbus Barrier module - and the optional alarmmodule, if required.2.3 Trunk Terminal AssemblyThe incoming trunk wiring is terminated inside a separate compartment, called theTrunk Terminal Assembly (TTA), that contains increased safety (Ex e) trunk wiringterminals. This assembly has a protective cover to deter interference, and carries awarning to the user about working on trunk wiring without first isolating the power.A fieldbus Terminator module (part no. 9378-FT) is supplied pre-fitted on the TTA. Thisis to remain installed if the enclosure is at the end of the segment. If the incomingfieldbus trunk will be onward linked to a further node on the segment the terminatorcan be removed. See Section 4.4 on page 13 for additional information.An optional Trunk Surge module (part no. 9376-SP) can be plugged into the TTA toprotect the fieldbus barrier against damaging voltage and current surges on theincoming trunk wiring.Either enclosure may be installed in a Zone 1 or Zone 2 hazardous area; in whichcase, the trunk wiring must be implemented using suitably protected cable. Theenclosures provide excellent chemical and moisture resistance and are suitable foruse in a wide range of corrosive environments.The 9372-FB-Px-yy and 9375-FB-Px-yy Fieldbus Barrier enclosures are bus-poweredand require no additional power supply in the field. When used with a fieldbus hostcontrol system, power for the trunk MUST be provided only by a supply conformingto IEC 61158-2, e.g. MTL F800 or 918x range of redundant power supplies. Theenclosures are supplied pre–drilled for all trunk and spur cable entries and fittedwith Ex e certified blanking plugs and a breather.3 MECHANICAL INSTALLATIONSee Figures 3.1 and 3.2 for the dimensions, fixing locations and cable glandpositions for both enclosure models.3.1 Mounting overviewBefore mounting an enclosure, consider the following points.a) The permitted ambient temperature range external to the enclosure (–40°C to+70°C) must not be exceeded. Avoid radiant heat by locating the enclosure awayfrom direct sunlight or local sources of heat.b) The enclosure has an ingress protection rating of IP65 or IP66 (to EN60529)depending on the manufacturing date. The mounting location should be chosento comply with the rating of the enclosure.c) The enclosure is designed for mounting on a vertical surface, with the cableentry at the lowest point, as shown in the upper part of Figure 3.1 or Figure 3.2.d) The nominal weight of the individual enclosures, including two barrier modules,but excluding any surge protection modules (trunk or spur) is:Model type Nominal weightStainless steel enclosure 8.0 kgGRP enclosure 7.8 kge) Adequate security should be provided against unauthorised interference.