New Approach to Power Supply Increases Fieldbus Network Design Flexibility in Hazardous Areas

Related Vendors

DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

TURCK GmbH

CAC ENGINEERING GMBH

Pepperl+Fuchs SE

Dart Fieldbus Means Long Cable Distances

Dart Fieldbus supports trunk cabling as long as 1,000 meters. In addition, it allows spur lines of up to 120 m. This is significantly longer than pure FISCO installations, which have a maximum spur length of 60 m, with a limit of 1,000 m on the total length of the trunk and all spur cables. At the same time Dart Fieldbus requires the same or a smaller footprint in the control room cabinet.

Moreover, Dart Fieldbus supports up to 32 devices per segment — the maximum permitted according to fieldbus rules. This reduces capital costs by eliminating excessive fieldbus infrastructure. The higher device count per segment eliminates the problem of having to design complex network topologies with many sub-segments, each requiring its own power supply, junction boxes, and barriers. And all of this is permitted in the most sensitive gas group: IIC.

FieldConnex Advanced Diagnostics help users monitor and maintain the quality of the fieldbus infrastructure and ensure system availability. Dart Fieldbus helps reduce budgets for operating expenditures through higher system availability with full power redundancy. It removes complexity and enables longer maintenance cycles. The electrical infrastructure can be safely maintained without requiring a hot work permit. And because Dart Fieldbus is designed as an infrastructure for existing IS field devices and DCS systems it is suitable for both greenfield and brownfield sites.

* The author is Product Marketing Manager FieldConnex, Division Process Automation, Pepperl+Fuchs GmbH, Mannheim/Germany.

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