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Fieldbus system gains ATEX approval

14 January 2009

MooreHawke has announced that the Route-Master Fieldbus System has ATEX approval as a redundant intrinsically-safe fieldbus system permitting the connection of any mix of Fisco and Entity devices. This is the world's first fieldbus system approval to offer Fisco compatibility and power redundancy.

Fieldbus system gains ATEX approval
Fieldbus system gains ATEX approval

A Route-Master system consists of up to eight Trunk Isolator Modules in a 19-inch rack, each connected to one or more RM100 Fieldbus Device Couplers. The RM100 Rack incorporates hot-swappable and load-sharing redundant DC power cards and full galvanic isolation. Intrinsically-safe approvals extend to IEC Gas Group IIC, with an industry-best 350m per segment.

The duplex Fisco Route-Master gives a calculated MTBF of 468 years, at least 5 times better than a conventional simplex Fisco system. Route-Master allows the full Foundation Fieldbus network length of 1900m, and 120m spurs, double the normal Fisco restrictions.

RM100 Device Couplers have auto-resetting short-circuit protection, automatic segment termination to eliminate common installation errors and commissioning delays, and LED status indicators. The short circuit protection method prevents segment failure caused by multiple device faults.

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