May 27, 2026

3EX450.66-1 Main Line Controller

The 3EX450.66-1 is a high-performance main line controller developed for the B&R 2005 automation system, functioning as a core PROFIBUS DP master station. It integrates a galvanically isolated RS485 fieldbus interface and an RS232 configuration port, delivering stable, high-speed data transmission and precise main line control. Built for complex industrial environments, it features strong anti-interference capabilities, comprehensive diagnostics, and seamless integration between the local control system and remote field devices.

Description

3EX450.66-1 Main Line Controller

Product Description

Basic Information

Model: 3EX450.66-1
Manufacturer: B&R Industrial Automation
Series: 2005 System Main Line Controller
Type: PROFIBUS DP Master, Fieldbus Main Controller
Interfaces: PROFIBUS DP (isolated RS485, 9-pin D-Sub female), RS232 configuration port (9-pin D-Sub male)
Installation: Plug-in slot on B&R 2005 system backplane
Housing: Industrial plastic, UL94V-0 flame retardant
Protection Rating: IP20
Weight: Approx. 0.55 kg
Dimensions: 115 × 70 × 170 mm
Certifications: CE, UKCA, cULus, EAC

Function and Positioning

As the core main line controller of the B&R 2005 system, this product is positioned for industrial main line network management and centralized control. It operates as a PROFIBUS DP master node to coordinate up to 125 slave devices, enabling real-time data exchange and logic control between the main controller and distributed field equipment. The galvanic isolation design protects against surge voltages and electromagnetic interference, while multiple status LEDs support quick on-site inspection and fault troubleshooting. It serves as the backbone for system-wide communication and control, enhancing scalability and reliability for distributed automation architectures.

Core Performance Parameters

Communication Protocol: PROFIBUS DP (Master)
Max. Connected Slaves: 125 units
Max. Baud Rate: 12 Mbps
Data Capacity: 3.5 KB input / 3.5 KB output
Isolation: Galvanic isolation for fieldbus interface
Configuration Port Speed: Up to 9.6 kbps (RS232)
Status Indicators: Power, RUN, BUS activity, TX/RX, Diagnostics LEDs
Power Consumption: 1.1 W @ 24 VDC
Operating Temperature: 0 °C to +60 °C
Storage Temperature: -40 °C to +85 °C
Humidity: 5%–95% (non-condensing)

General Compatible Accessories

System Backplane: B&R 2005 series BP2005 backplane
Power Supply: B&R PS456, PS465 series 24 VDC industrial power supply
Connection Cables: Shielded PROFIBUS DP cables, RS232 configuration cables
Auxiliary Components: PROFIBUS DP bus termination resistors
Configuration Software: B&R FieldBus Configurator (1A0550.01)
Spare Parts: Interface connectors, LED indicators, mounting clips

Applicable Equipment Fields

This main line controller is ideal for industrial automation systems requiring centralized main line control and PROFIBUS DP connectivity:

Manufacturing: Automotive assembly lines, machine tools, packaging machinery
Process Industry: Chemical, pharmaceutical, water treatment (distributed I/O control)
Building Automation: Large HVAC, facility management (centralized main line control)
Energy: Power plants, renewable energy, grid monitoring systems
Logistics: Automated warehouses, sorting systems, conveyor lines
General Machinery: Textile, printing, plastic machinery (system main line expansion)

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