Eaton MTL

MTL Instruments Group

Products

Intrinsically Safe Fieldbus Barriers (Legacy)

Please note that this product has been discontinued. The information contained on this page is for reference use only.

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The 9373-FB3-Px-SS is a third-generation product, in a successful range of Eaton Fieldbus Barrier Systems. The field-mounted enclosure contains a barrier that receives power and Foundation™ fieldbus H1 communications via a non-intrinsically safe trunk and converts this to a number of galvanically isolated, intrinsically safe, spur connections.

Key features:
The 937x-FB2 Fieldbus Barrier Series are field-mounted wiring hubs that creates six or twelve intrinsically safe spur connections from a high-energy trunk, for connection to suitably certified Foundation™ fieldbus H1 instruments. Capable of supporting heavily loaded fieldbus segments and long trunk cable lengths, the Fieldbus Barrier may be installed in Zone 1 (gas) or Zone 21 (dust) hazardous areas, with the trunk wiring implemented using suitably protected cable and increased safety (Ex e) connection facilities.

  • For Foundation™ fieldbus networks in hazardous areas
  • Complete enclosure systems for 12 intrinsically safe spur connections
  • Mount in Zone 1 (gas) or 21 (dust) with spurs connected into Zone 0
  • Compatible with FISCO and Entity-certified fieldbus instruments
  • Compact version with reduced footprint
  • Ergonomic mechanical design
  • Optional, integrated surge protection for trunk and spurs

Key features:
The 9372-FB Redundant Fieldbus Barriers are field-mounted wiring hubs that create up to six intrinsically safe spur connections from a high-energy trunk, for connection to suitably certified Foundation™ fieldbus H1 instruments. They may be installed in Zone 1 (gas) or Zone 21 (dust) hazardous areas, with the trunk wiring implemented using suitably protected cable and increased safety (Ex e) connection facilities.

  • For Foundation™ fieldbus networks in hazardous areas
  • Complete enclosure system for 6 or 12 intrinsically safe spur connections
  • Mount in Zone 1 (gas) or 21 (dust) with spurs connected into Zone 0
  • Compatible with FISCO and Entity-certified fieldbus instruments
  • Compact, modular construction
  • Ergonomic mechanical design
  • Pluggable system components, without ‘gas free’ constraints
  • Optional, integrated surge protection for trunk and spurs

Key features:

  • For Foundation™ fieldbus networks in hazardous areas
  • Redundant configuration for super-high system availability
  • Complete enclosure systems for up to 6 intrinsically safe spur connections
  • Failure alarm direct to host control system via integrated fieldbus device
  • Mount in Zone 1 (gas) or 21 (dust) with spurs connected into Zone 0
  • Compatible with FISCO and Entity certified fieldbus instruments
  • Ergonomic mechanical design
  • Pluggable system components, without ‘gas free’ constraints
  • Optional, integrated surge protection for trunk and spurs

The 9376-SP Trunk Surge Protector prevents surges and transient over-voltages induced on the trunk of the fieldbus network from damaging the system’s internal components such as the Fieldbus Barrier Module and terminator. Like the 9378-FT, it can also be removed and replaced while powered in a Zone 1 hazardous area.

For maximum protection, the FS32 Surge Protection Device prevents surges and transient over-voltages conducted along the Spurs of fieldbus systems from damaging the fieldbus barrier module.

The Fieldbus Barrier internal system components are also available as ‘Open Frame’ versions, for installation into user-selected field enclosures. These are suitable for applications requiring special enclosure features such as viewing window or removable gland plate, or where multiple Fieldbus Barrier segments are required in a single enclosure. 6-spur (9387-FBx) and 12-spur (9388-FBx) versions are supported. Each unit comprises pre-wired and assembled modular components on a stainless steel baseplate, for installation into an Ex e certified field enclosure without the need for additional internal wiring or ancillary components. Connection facilities are provided for the trunk and spur wiring, as well as all electronic modules needed to support a fully-working Fieldbus Barrier.

For product certificates

The MTL 9371/3/4-FB-Px-xx Fieldbus Barrier range is not RoHS compliant, hence will only be supplied for spares & repairs within the EU from July 2017.

Product Code Description Downloads
7. 937x-FB Classic Fieldbus Barriers - use for spares
937x-FB-Px-SS   Fieldbus Barrier system, 6 and 12 spur, SS enclosure (pre Version 2) Manual 
937x-FB-Px-SS   Fieldbus Barrier system, 6 and 12 spur, SS enclosure Datasheet  Manual 
938x-FB-Px-xx   Fieldbus Barrier baseplate, 6 and 12 spur, Open Frame – for installation into 3rd party enclosure Datasheet  Manual 
8. 937x-FB Classic Fieldbus Barriers - use for spares
937x-FB-Px-PP   Fieldbus Barrier system, 6 and 12 spur, GRP enclosure Datasheet  Manual