Description

NWRR85001 (NW-RR85-001) Industrial Fieldbus Communication Gateway Module

Basic Information

• Part Number: NWRR85001 (Standard model code: NW-RR85-001)
• Brand Classification: Listed in ABB legacy DCS spare parts catalog, original manufacturer: Schneider Electric
• Warranty: One Year
• Core Position: Multi-protocol fieldbus conversion repeater gateway for ABB PROCONTROL / Advant OCS / System 800xA old-generation distributed control systems

Technical Specifications

1. Electrical Parameters

• Operating Power Supply: 24VDC industrial power
• Max Power Consumption: 5W
• Operating Temperature: -25°C ~ +70°C
• Storage Temperature: -40°C ~ +85°C
• Overall Net Weight: 0.2kg
• Overall Dimension: 150mm × 80mm × 40mm
• Wiring Interface: M12 12-pin industrial waterproof connector
• 

2. Communication Protocol Compatibility

• Supported mainstream industrial bus protocols: Modbus RTU/TCP, CANopen, DeviceNet
• Core function: Protocol conversion, bus signal regeneration, long-distance signal relay amplification
• Signal isolation: Galvanic isolation between different bus ports to eliminate ground loop interference
• Transmission rate: Adaptive baud rate matching with upper controller and field slave instruments

3. Protection & Environmental Design

• PCB full three-proof conformal coating (moisture-proof, dust-proof, anti-corrosive gas)
• Built-in ESD, surge and EFT transient voltage suppression circuit
• Pass industrial EMC heavy interference test, adapts to high EMI environment of power plants and petrochemical workshops
• IP20 protection grade, standard DIN rail vertical/horizontal cabinet mounting

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Product Overview

The NWRR85001 (NW-RR85-001) is a discontinued multi-fieldbus repeater and protocol conversion gateway, widely used as maintenance spare part for ABB old DCS platforms (PROCONTROL P13, Advant AC450, Symphony Plus).

In large-scale process control systems such as thermal power turbine control, petrochemical ESD safety interlock and pulp & paper production lines, it solves three core industry pain points:

1. Protocol incompatibility between ABB DCS backplane bus and third-party field devices (frequency converters, intelligent valve positioners, remote RTU modules);
2. Attenuation and distortion of fieldbus signals after ultra-long-distance wiring, resulting in communication packet loss and system fluctuation;
3. Mutual interference between multiple different bus networks in the same cabinet, causing DCS communication crash.

It acts as an intermediate forwarding bridge: on one side docking the ABB DCS main controller backplane, on the other side converting and amplifying signals to drive Modbus/CANopen/DeviceNet slave equipment, realizing transparent data two-way transmission without modifying the original DCS program architecture.