Module adds discrete I/O to Foundation fieldbus

Foundation fieldbus device is first with logic capability to integrate discrete devices with process devices over Foundation fieldbus, answering the user need for fewer buses in plants, reducing costs

Emerson Process Management has introduced the Rosemount 848L Logic Transmitter for cost-effective integration of logic and discrete I/O capability on a Foundation fieldbus H1 segment, without the need for a separate discrete I/O bus.

The 848L adds to the broad family of intelligent field devices that deliver the project and operational savings and efficiency from PlantWeb digital plant architecture.

The 848L accepts up to eight direct-wired, discrete inputs, plus inputs sent over Foundation fieldbus; within the logic processing capability in the 848L these interact to drive up to four discrete outputs.

By executing logic in the 848L field device, the application can be supported in the absence of any central controller, and even in the absence of fieldbus communications, providing a high level of independent availability.

The 848L can be used in a variety of applications including motor starters, solenoid valves, limit switches, interlocks, proximity switches, push buttons, annunciators, and burner flame management systems.

The twenty logic equations available within the 848L transmitter enable interactions to be processed independently of the fieldbus and central controller, providing fast execution for the most demanding applications.

The transmitter discrete input block can communicate the status of any of the inputs, or the results of any of the twenty logic equations, to other devices on the bus or to the host.

As a Foundation fieldbus device, the I/O and logic can be configured using the same DDL based software tools utilised by other devices, reducing maintenance and training costs.

As one of the components of the Emerson PlantWeb architecture, the Rosemount 848L enhances the PlantWeb ability to improve plant efficiency by 2% or more, by delivering asset optimisation, process automation, and management execution.

Further cost savings, increased plant availability, and enhanced safety and environmental compliance are achieved when the transmitters are integrated into PlantWeb architecture.

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