Unlike conventional Fieldbus Barrier products that are

based on stand-alone modules, the 937x-FB2-PC-PP range

are supplied as a complete, factory-assembled systems in a

glass reinforced plastic (GRP) enclosures that does not require

additional wiring, customised housing or complex ancillary

components. Electrical and mechanical aspects of the design

are integrated, providing the industry’s first complete,

ergonomic solution for ‘High Energy Trunk’ applications in

hazardous areas.

The key modular components of the system (Fieldbus

Barriers and Surge Protectors) may be ‘hot-plugged’ by

design and without gas-clearance procedures or separate

isolating switches. This virtually eliminates the risk

associated with hazardous area maintenance activities,

speeds module replacement and avoids the need for

specialist operator training.

Optional features include pluggable surge protection

components for the fieldbus trunk and individual spurs.

Connection facilities with generous room for cable

management are provided within the Fieldbus Barrier

enclosure for the trunk and spur wiring. Where appropriate,

the trunk wiring may be extended from one Fieldbus Barrier

enclosure to another.

Enclosure systems for 6 or 12 spurs are supported. For

added flexibility, the 12-spur enclosure can be specified part

populated with one 6-spur barrier module installed (model no.

9374-FB2-PC-PP-001). This permits future expansion from six

to twelve spurs simply by plugging in an additional module.

The 937x-FB2-PC-PP range of Fieldbus Barriers are bus

powered and requires no additional power supply in the field.

When used with a fieldbus host control system, power for the

trunk may be provided by MTL F800 or 9180 range of fieldbus

power supplies in redundant or non-redundant format.