The 9372-FB redundant fieldbus barrier is based on our

revolutionary 9370-FB range of products, which are supplied

as complete, factory-assembled enclosure systems that do not

require additional wiring, customised housings 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.

Uniquely, the key modular components of the system (Fieldbus

Barrier, Terminator 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.

For added flexibility, a redundant-capable enclosure can be

specified part-populated with one 6-spur module (model

no. 9375-FB). This permits future upgrading from simplex to

redundant mode simply by plugging in an additional Fieldbus

Barrier module and optional alarm module.

The 9372-FB Fieldbus Barrier is 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

redundant power supplies.