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B&R 3IF671.9 Interface Module

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B&R 3IF671.9 Interface Module
May 27, 2026

B&R 3IF671.9 Interface Module

The 3IF671.9 is a high-performance multi-protocol interface module from B&R’s SYSTEM 2005 series, designed as a versatile communication co-processor. It integrates three independent channels with galvanic isolation, enabling seamless data exchange between the main controller, field devices, and higher-level systems. By offloading communication tasks, it enhances real-time performance and system reliability in demanding industrial environments.

Description

B&R 3IF671.9 Interface Module

Product Introduction

The 3IF671.9 is a high-performance multi-protocol interface module from B&R’s SYSTEM 2005 series, designed as a versatile communication co-processor. It integrates three independent channels with galvanic isolation, enabling seamless data exchange between the main controller, field devices, and higher-level systems. By offloading communication tasks, it enhances real-time performance and system reliability in demanding industrial environments.

Basic Information

  • Model: 3IF671.9

  • Brand: B&R (Bernecker + Rainer, ABB Group)

  • Series: SYSTEM 2005

  • Product Type: Multi-Protocol Interface / Communication Module

  • Interfaces: 1×RS232, 1×isolated RS485/RS422, 1×isolated CAN

  • Power Supply: 5 VDC from backplane bus; 24 VDC for field side

  • Power Consumption: Max 450 mA @ 5VDC

  • Dimensions: 94 mm × 85 mm × 55 mm

  • Weight: Approx. 0.25 kg

  • Protection Class: IP20

  • Operating Temperature: -20°C to +60°C

  • Storage Temperature: -25°C to +70°C

  • Certifications: CE, UL/cULus, EAC

  • Mounting: SYSTEM 2005 series backplane slot

Function and Positioning

The 3IF671.9 acts as the communication hub and protocol converter in SYSTEM 2005 series systems, expanding CPU connectivity and supporting multi-network interconnection. It independently handles protocol conversion, data framing, and error checking to reduce CPU load. Galvanic isolation on RS485/RS422 and CAN interfaces suppresses EMI and protects the controller from field voltage spikes. It supports CANopen, Modbus RTU, and ASCII protocols, enabling connection to sensors, drives, HMIs, and third-party PLCs.

Core Performance Parameters

  • Supported Protocols: CANopen, Modbus RTU, ASCII, custom protocols

  • Communication Speed: RS232 up to 115.2 kbit/s, RS485/RS422 up to 115.2 kbit/s, CAN up to 1 Mbit/s

  • Isolation Voltage: 2,500 VAC on isolated channels

  • Data Buffers: Dedicated Tx/Rx buffers per channel

  • Status Indicators: LEDs for module status, communication activity, and errors

  • EMC Compliance: EN 61000-6-2, EN 61000-6-4

  • Vibration/Shock: Compliant with IEC 60068-2-6/27

  • Configuration: Via B&R Automation Studio V4.x and above

General Compatible Accessories

  • B&R SYSTEM 2005 series backplanes and racks

  • B&R SYSTEM 2005 series CPU modules

  • 24 VDC industrial power supplies (0PS105.1, 0PS205.1)

  • Communication cables: RS232 (0G0001.00-090), RS485 (0G1000.00-090), CAN

  • Terminal blocks for SYSTEM 2005 series I/O modules

  • Application memory modules (2ME903.90-1)

  • B&R Automation Studio V4.x and above

Applicable Equipment Fields

  • Factory Automation: Production lines, packaging machinery, assembly systems

  • Process Control: Chemical, pharmaceutical, and water treatment plants

  • Motion Control: Connection to servo drives, frequency converters, and encoders

  • Industrial Networking: Multi-node communication, data acquisition, SCADA integration

  • Harsh Environments: Workshops, outdoor equipment, high-noise industrial sites

  • General Automation: Applications requiring multi-protocol expansion and reliable data transmission


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