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Product Description
May 27, 2026

Product Description

The 3EX450.76-1 is a professional field bus module for B&R 2005 automation system, operating as a CANopen master station. It is equipped with galvanically isolated CAN interface and an independent RS232 configuration port. Featuring strong anti-interference capability and complete diagnostic functions, it achieves stable high-speed data transmission between the main controller and field slave devices, and is fully adaptable to diverse harsh industrial working conditions.

Description

Product Description

The 3EX450.76-1 is a high-performance CANopen master bus controller designed for the B&R 2005 automation system. It features an electrically isolated CAN interface and an RS232 configuration port, enabling reliable high-speed communication and precise network management. Optimized for harsh industrial environments, it provides strong electromagnetic interference suppression, comprehensive diagnostics, and seamless integration between the main control system and distributed field devices.

Basic Information

  • Model: 3EX450.76-1

  • Manufacturer: B&R Industrial Automation

  • Series: 2005 System Bus Controller

  • Type: CANopen Master Controller

  • Interfaces: Electrically isolated CAN interface, RS232 configuration port

  • Mounting: Plug-in installation on B&R 2005 system backplane

  • Housing: Industrial plastic, UL94V-0 flame retardant

  • Protection Rating: IP20

  • Weight: Approximately 0.55 kg

  • Dimensions: 115 × 70 × 170 mm

  • Certifications: CE, UKCA, cULus, EAC

Function and Positioning

As the core CANopen communication unit of the B&R 2005 system, this controller acts as a CANopen master node to manage and coordinate the entire bus network. It connects and controls multiple CANopen slave devices, supporting real-time data exchange, command transmission, and status monitoring. The electrical isolation design protects against voltage surges and electromagnetic noise. Built-in LED indicators display power, operation, bus activity, and diagnostic status for quick on-site inspection and fault localization. It serves as the communication backbone for building reliable, scalable distributed automation systems.

Core Performance Parameters

  • Communication Protocol: CANopen (Master)

  • Maximum Baud Rate: 1 Mbps

  • Data Capacity: 3.5 KB input data, 3.5 KB output data

  • Isolation: Electrical isolation for CAN interface

  • RS232 Configuration Port Speed: Up to 9.6 kbps

  • Status Indicators: Power, RUN, BUS activity, TX/RX, Diagnostics LEDs

  • Power Consumption: 5.5 W total (1.1 W @24 VDC, 4.4 W @5 VDC)

  • Operating Temperature: 0 °C to +60 °C

  • Storage Temperature: -40 °C to +85 °C

  • Relative Humidity: 5%–95%, non-condensing

General Compatible Accessories

  • System Backplane: B&R BP2005 series backplane for 2005 system

  • Power Supply: B&R PS456, PS465 series 24 VDC industrial power supply

  • Cables: Shielded CANopen cables, RS232 configuration cables

  • Auxiliary Parts: CANopen bus termination resistors

  • Configuration Software: B&R FieldBus Configurator (1A0550.01)

  • Spare Parts: Interface connectors, LED indicators, mounting clips

Applicable Equipment Fields

This CANopen master bus controller is widely used in industrial automation systems requiring CANopen communication:

  • Manufacturing: Automotive assembly lines, machine tools, robotics, packaging machinery

  • Process Industry: Chemical, pharmaceutical, food and beverage, water treatment systems

  • Building Automation: Large HVAC, intelligent building control, facility management

  • Energy: Power plants, renewable energy, energy storage systems, grid monitoring

  • Logistics: Automated warehouses, sorting systems, conveyor lines, material handling

  • General Machinery: Textile, printing, plastic, and woodworking machinery


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