Foxboro FOUNDATION Fieldbus Communication Module

Availability: 10 left in stock

Foxboro RH970WU I/A Series Fieldbus Communication Module The Foxboro RH970WU, also cataloged as the RH970WU Fieldbus Communication Module, operates as...

SKU: RH970WU

Manufacturer: Foxboro
Product No.: RH970WU
Product Type: Communication Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 600g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Foxboro RH970WU I/A Series Fieldbus Communication Module

The Foxboro RH970WU, also cataloged as the RH970WU Fieldbus Communication Module, operates as a dedicated hardware component for dual-channel fieldbus network execution within Foxboro I/A Series DCS platforms. The unit converts control processor commands into 31.25 kbit/s digital signals to manage real-time communication across FOUNDATION Fieldbus H1 field networks. Featuring dual isolated channels, the module processes diagnostic telemetry from field transmitters and valve positioners while isolating internal system logic from field-side electrical transients across a 1500 VDC barrier.

Hardware Specifications

Parameter	Specification
Model	RH970WU
Brand	Foxboro
Origin	China
Weight	Standard Module Weight
Dimensions	Standard I/A Series Baseplate Slot Size
Operating Temp	-20 to +70 deg C
Power Consumption	Redundant DC inputs via baseplate
Communication Protocol	FOUNDATION Fieldbus H1
Data Rate	31.25 kbit/s
Channels	Dual Isolated H1 Channels
Device Capacity	Up to 32 devices per channel
Channel-to-Logic Isolation	1500 VDC
Enclosure Rating	IP20

Process Control & Fieldbus Connectivity

The module implements 4-20 mA HART loop protocol parameters and FOUNDATION Fieldbus connectivity to maintain continuous digital data exchange with process instruments. Integrated channel-to-channel isolation prevents common-mode noise propagation and ground loop currents across the dual H1 trunks. Internal firmware monitors bus traffic continuously, verifying signal integrity and execution status while relaying real-time diagnostics directly to the EcoStruxure Foxboro DCS host controllers.

Frequently Asked Questions

Q: Does the module support hot-swapping during active system operation?

A: Yes. Technicians can replace the module on a live backplate without interrupting power or signal transmission on adjacent I/O and communication cards.

Q: How many field devices can be connected to a single RH970WU module?

A: The module supports up to 32 FOUNDATION Fieldbus H1 devices per channel, enabling a maximum of 64 field instruments across both isolated channels.

Q: How does the module handle electrical isolation between field wiring and system logic?

A: Internal galvanic isolation transformers provide 1500 VDC galvanic isolation between the fieldbus H1 field connections and the backplate system logic bus.

Field Installation Guidelines

Mount the baseplate securely on a standard DIN rail or rack panel frame within an IP54-rated industrial cabinet. Insert the module vertically into its designated baseplate slot until the locking latches seat completely. Route FOUNDATION Fieldbus H1 spur and trunk cables through designated wiring ducts, separating low-voltage digital signal lines from high-voltage AC power distribution leads.

Terminate both ends of each H1 fieldbus segment using approved 100-ohm fieldbus terminators to prevent signal reflection. Connect cable shielding to the cabinet ground bus bar at a single point to prevent ground loop currents while ensuring electromagnetic interference suppression. Verify that all fieldbus wiring connectors are securely torqued and that cabinet ambient temperatures remain within the -20 to +70 deg C operational limits.

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