May 27, 2026

B&R 3IF672.9 Interface Module

The 3IF672.9 is a compact, high-reliability multi-channel communication interface module from B&R’s SYSTEM 2005 series, designed for installation in CPU or interface module slots of compatible controllers. It provides one RS232 port and two electrically isolated CAN ports, serving as a dedicated communication co-processor to expand network connectivity and protocol flexibility for real-time industrial control systems. With robust galvanic isolation and compact form factor, it ensures stable data exchange in noise-intensive factory environments.

Description

B&R 3IF672.9 Interface Module

Product Introduction

Basic Information

Model: 3IF672.9
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: Multi-Protocol Communication Interface Module
Interfaces: 1×RS232, 2×CAN (galvanically isolated)
Power Supply: 5 VDC from backplane bus
Power Consumption: Max 2 W
Dimensions: 70 mm × 20 mm × 130 mm
Weight: Approx. 0.1 kg
Protection Class: IP20
Operating Temperature: 0°C to +55°C
Storage Temperature: -25°C to +70°C
Certifications: CE, UL/cULus, EAC
Mounting: CPU (CP260) or IF260/IF060 interface slot

Function and Positioning

The 3IF672.9 functions as a CAN-focused communication expansion module for SYSTEM 2005 series controllers, optimized for multi-node CAN networking and serial device connectivity. It offloads communication tasks from the main CPU, independently handling data framing, error checking, and protocol conversion to enhance system real-time performance. The dual isolated CAN ports support redundant or segmented CAN networks, while the RS232 port connects to serial devices like HMIs, scanners, or third-party controllers. It acts as a bridge between the controller and field-level devices, enabling seamless integration in distributed automation architectures.

Core Performance Parameters

Supported Protocols: CANopen, DeviceNet, CAN 2.0A/B, Modbus RTU (RS232), ASCII
Communication Speed: RS232 up to 115.2 kbit/s; CAN up to 1 Mbit/s
Isolation Voltage: 2,500 VAC on CAN channels (between ports and to PLC)
Communication Distance: RS232 up to 15 m; CAN up to 1,000 m (500 kbit/s)
Data Buffers: Dedicated Tx/Rx buffers per channel
Status Indicators: LEDs for module status, CAN activity, and error diagnosis
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 6/9/12/15-slots racks
B&R SYSTEM 2005 series CPU modules (CP260) and interface modules (IF260/IF060)
24 VDC industrial power supplies (0PS105.1, 0PS205.1)
Communication cables: RS232 (0G0001.00-090), CAN (0G1000.00-090)
Terminal blocks for SYSTEM 2005 series I/O modules
B&R Automation Studio V4.x and above for programming and diagnosis
Application memory modules (2ME903.90-1) for program storage

Applicable Equipment Fields

Factory Automation: Automotive assembly lines, packaging machinery, material handling systems
Process Control: Food and beverage, pharmaceutical, chemical, and water treatment plants
Motion Control: Connection to CANopen servo drives, frequency converters, and encoders
Industrial Networking: Distributed I/O systems, CAN bus networks, SCADA and HMI integration
Harsh Environments: Manufacturing workshops, high-vibration sites, and electrical noise-intensive areas
General Automation: Any SYSTEM 2005 series application requiring dual CAN and RS232 communication expansion

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