Foxboro P0971WV Dual Nodebus Communication Module

Product Overview

The Foxboro P0971WV is a dual-node Nodebus communication module for Foxboro I/A Series control systems.
It enables reliable, real-time data exchange between control processors and distributed fieldbus devices.
Moreover, the module supports redundant communication paths to maintain system availability during faults.
Engineers widely recognize this DNBT module for stable performance in continuous, mission-critical operations.
Therefore, it plays an essential role in maintaining deterministic control network behavior across complex plants.

Key Functional Highlights

Dual-node architecture provides two independent Nodebus paths for communication redundancy and fault tolerance.
In addition, high-speed data handling supports deterministic control and timely process data updates.
Integrated diagnostics help maintenance teams quickly identify communication issues or node failures.
Moreover, electrical isolation protects connected controllers and field devices from network disturbances.
As a result, system uptime and overall operational confidence significantly improve in demanding environments.

Technical Specifications

Product Type: Dual-Node Nodebus Communication Module (DNBT)
Model Number: P0971WV
Compatible System: Foxboro I/A Series Distributed Control System
Primary Function: Nodebus communication, data routing, and diagnostics
Communication Speed: Up to 2 Mbps
Redundancy: Supported, including 1+1 or N+1 network configurations
Input Power: 24 V DC nominal, compatible with industrial control power systems
Output Voltage: +24 V DC for Nodebus logic and connected I/O interfaces
Power Consumption: Less than 10 W during normal operation
Operating Temperature: 0 to 60°C (32 to 140°F)
Operating Humidity: 5% to 95%, non-condensing
Weight: 1.70 lbs

Typical Applications

Chemical processing plants use the P0971WV to maintain redundant communication across distributed control nodes.
For instance, power generation facilities rely on its fault tolerance to protect continuous turbine control.
Moreover, pharmaceutical production lines benefit from stable data transfer supporting strict validation requirements.
Water and wastewater treatment systems also deploy this module for reliable, unattended operation.
Therefore, the module suits any application requiring resilient industrial control networking.

Reliability, Support, and Lifecycle Value

The P0971WV follows Foxboro’s long-established design standards for industrial-grade reliability and longevity.
In addition, standardized Nodebus interfaces simplify integration into existing I/A Series architectures.
Spare parts availability and long product lifecycle support reduce total cost of ownership over time.
Therefore, engineers often select this module for both system upgrades and legacy DCS maintenance projects.

FAQ

Q: What is the primary function of the Foxboro P0971WV module?
A: It provides redundant dual-node Nodebus communication between controllers and field devices within I/A Series systems.

Q: Does the P0971WV support network redundancy?
A: Yes, it supports dual-node configurations, enabling continued operation if one communication path fails.

Q: What power supply does the P0971WV require?
A: The module typically operates from a 24 V DC industrial control power source.

Q: Is the P0971WV suitable for harsh industrial environments?
A: Yes, it is designed for extended temperature ranges and high humidity without condensation.

Q: Can this module be used in safety-critical applications?
A: It is commonly applied in mission-critical systems requiring high availability and communication reliability.