June 02, 2026

3IF782.9-1 Interface Module – Detailed Product Description

The 3IF782.9-1 is a dual-interface aPCI communication module manufactured by B&R (Bernecker + Rainer), designed for the System 2005 automation platform and compatible B&R Automation PC systems. Integrating one high-speed POWERLINK real-time Ethernet port and one isolated RS485 serial port, it functions as a combined fieldbus and serial communication gateway. The module supports both POWERLINK manager (master) and controlled (slave) node operation, alongside standard RS485 protocols, enabling seamless connectivity to servo drives, distributed I/O, sensors, and third-party serial devices. With hardware-based real-time processing, galvanic isolation, and a compact industrial design, it delivers reliable, deterministic communication for motion control, process automation, and legacy system integration.

Description

3IF782.9-1 Interface Module – Detailed Product Description

1. Product Overview

2. Core Technical Specifications

2.1 Communication Interfaces

POWERLINK Interface (IF2)

Port: 1 × RJ45, 100BASE-TX, 100 Mbps fixed rate.
Protocol: POWERLINK V1/V2, supporting isochronous cyclic and acyclic asynchronous data exchange.
Node Role: Configurable as POWERLINK manager (master) or controlled (slave) node.
Topologies: Line, star, tree; max. 100 m between stations per segment.
Features: Auto-negotiation, Auto-MDI/MDIX, full galvanic isolation from backplane.
Node Capacity: Up to 254 slave nodes per network segment.

RS485 Interface (IF1)

Port: 1 × RS485, accessed via separate terminal block (TB704 required, ordered separately).
Protocol: Standard RS485, supporting Modbus RTU, ASCII, and custom serial protocols.
Transmission Rate: Up to 115.2 kbps, with hardware flow control.
Isolation: Galvanic isolation between RS485 and backplane, protecting against ground loops and voltage spikes.
Distance: Up to 1,200 m at lower baud rates, supporting multi-drop networks.

2.2 Mechanical & Environmental

Form Factor: Single-slot aPCI plug-in module, compatible with System 2005 backplanes and Automation PC aPCI slots.
Protection Class: IP20 (EN 60529), for indoor cabinet installation.
Operating Temperature: 0°C to +55°C (standard); -25°C to +60°C (extended).
Storage Temperature: -40°C to +85°C.
Power Supply: 5 VDC from System 2005 backplane; power consumption ~2.0 W (no external power).
Weight: Approximately 0.30 kg.
Dimensions: W 30 mm × H 90 mm × D 84 mm (System 2005 standard).

2.3 Diagnostic & Indicators

LEDs: Front-panel indicators for POWERLINK link/activity, RS485 transmit/receive, and power status.
Diagnostics: Hardware and software diagnostics for bus errors, link faults, and communication timeouts, accessible via B&R Automation Studio.

2.4 Compliance & Certification

Certifications: CE, UL, CSA, RoHS compliant.
EMC: Meets IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emission) for industrial environments.
POWERLINK: EPSG-certified for full protocol compliance.

3. Key Features

Dual-Interface Design: Combines POWERLINK real-time Ethernet and isolated RS485 serial in one compact module, reducing slot usage and hardware costs.
Configurable POWERLINK Role: Operates as master (manager) for network control or slave (controlled) for integration into existing POWERLINK networks.
Galvanic Isolation: Both interfaces are electrically isolated from the backplane, preventing ground loops, surge damage, and EMI/RFI interference.
On-Board Buffers: Dedicated transmit/receive buffers reduce CPU load and ensure deterministic communication for real-time motion control.
Legacy System Integration: RS485 port connects to older serial devices (e.g., drives, meters, sensors) while maintaining high-speed POWERLINK connectivity.
Hot-Swap Capability: Supports online replacement without system shutdown, minimizing downtime during maintenance.
Unified Configuration: All setup, diagnostics, and firmware updates via B&R Automation Studio, simplifying engineering and maintenance.
Rugged Construction: Conformal-coated PCB and vibration-resistant components ensure reliable 24/7 operation in harsh industrial conditions.

4. Application Scenarios

Motion Control: Connects System 2005 controllers to POWERLINK servo drives and RS485-based actuators for multi-axis synchronization in machine tools, robotics, and packaging machinery.
Mixed Network Automation: Integrates real-time POWERLINK I/O with legacy RS485 sensors, meters, and HMIs in assembly lines, material handling, and process plants.
Retrofit Projects: Enables modern System 2005 controllers to communicate with existing RS485 equipment while adding high-speed POWERLINK for new components.
Data Acquisition: Collects data from RS485-based instruments and POWERLINK I/O, transmitting to the controller for monitoring and control.
Remote Maintenance: Uses POWERLINK for remote diagnostics and firmware updates, while RS485 supports local serial device configuration.

5. Compatibility & Ordering

Compatible Systems: B&R System 2005 controllers, backplanes, and I/O; B&R Automation PC with aPCI slots.
Part Number: 3IF782.9-1.
Mandatory Accessories: Terminal block TB704 (4-pin, screw clamp or push-in) for RS485 wiring, ordered separately.
Warranty: 12 months (original B&R); extended warranty available.

6. Conclusion

The 3IF782.9-1 is a versatile, high-performance dual-interface aPCI module for B&R System 2005 and Automation PC systems. By combining configurable POWERLINK real-time Ethernet and isolated RS485 serial communication, it addresses modern motion control and legacy integration needs in a single, compact unit. With robust isolation, industrial-grade reliability, and seamless B&R system integration, it is ideal for mixed-network automation, retrofit projects, and high-precision motion control applications where both real-time and serial connectivity are required.

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