Product Overview

The ABB 3BHE012049R0101, also designated as the UFD128A101, is a high-performance fiber optic communication module engineered for ABB’s AC 800M controllers, Advant 800xA distributed control systems (DCS), and Symphony Plus automation platforms. As the “high-speed data backbone” of the automation network, the ABB 3BHE012049R0101 enables reliable, long-distance, and interference-free data transmission using optical fiber as the transmission medium, making it ideal for large industrial facilities where electromagnetic noise and long cable runs are common challenges. Some sources also identify the ABB UFD128A101 as a key component in ABB UNITROL excitation systems and industrial drive cabinets.

The ABB 3BHE012049R0101 is designed to overcome the limitations of traditional copper Ethernet (RJ45) in distance, anti-interference, and reliability. Its optical interface supports both single-mode (SM) and multi-mode (MM) fibers, with a data rate ranging from 100 Mbps full-duplex (100BASE-FX) to 1 Gbps depending on the configuration. The ABB UFD128A101 is critical for building redundant ring networks using HiperRing or MRP protocols, ensuring network self-healing in under 20 milliseconds in the event of a fiber break. For process-critical applications in power plants, oil refineries, and chemical facilities, the ABB 3BHE012049R0101 represents a field-proven, high-reliability solution that ensures communication continuity and system integrity.

 

Technical Specifications

Parameter Name	Parameter Value
Product Model	3BHE012049R0101 / UFD128A101
Manufacturer	ABB
Product Type	Fiber Optic Communication Module / Optical Transceiver
Compatible Systems	ABB AC 800M, Advant 800xA, Symphony Plus, UNITROL Excitation Systems
Communication Standard	IEEE 802.3 100BASE-FX (100 Mbps Full Duplex) or 1 Gbps Ethernet
Optical Fiber Type	Supports Single-Mode (SM) and Multi-Mode (MM) Fibers
Transmission Distance	MM: up to 2 km; SM: up to 20 km (or further, depending on optics)
Connector Type	ST, SC, or LC (depends on specific variant)
Wavelength	1310 nm (typical for single-mode)
Redundancy Protocol	HiperRing, MRP (Media Redundancy Protocol)
Mounting Type	DIN Rail or Insert into Controller/I/O Rack Slot
Operating Temperature	-40°C to +85°C (storage), 0°C to +60°C (operation)
Protection Class	IP20 (Cabinet Installation)
Weight	Approx. 0.02 kg to 0.06 kg (variant dependent)

 

Main Features and Advantages

High-Speed Communication for Real-Time Control: The ABB 3BHE012049R0101 delivers high-speed data transmission, supporting up to 100 Mbps full-duplex or 1 Gbps Ethernet depending on the specific variant. This ensures that the ABB UFD128A101 can handle the large volume of real-time data required for controller synchronization, remote I/O expansion, and subsystem communication without bottlenecks. The module’s low latency makes it suitable for demanding control loops in process automation and motion control applications.

Superior Immunity to Electromagnetic Interference: The ABB 3BHE012049R0101 uses optical fiber as its transmission medium, which is inherently immune to electromagnetic interference (EMI), radio frequency interference (RFI), and ground potential differences. This makes the ABB UFD128A101 the preferred choice for installation in electrically harsh environments such as power plants, substations, and facilities with high-power variable frequency drives. The fiber optic link also provides enhanced physical security, as it is extremely difficult to tap without detection.

Ultra-Fast Network Redundancy for High Availability: The ABB 3BHE012049R0101 supports advanced redundancy protocols including HiperRing and MRP, enabling the formation of robust ring network topologies. In the event of a fiber break or switch failure, the ABB UFD128A101 ensures network recovery in under 20 milliseconds, maintaining seamless communication between controllers, I/O stations, and operator workstations. This capability is essential for mission-critical applications where system downtime carries significant financial and safety consequences.

Long-Distance Connectivity and Flexible Deployment: With support for both multi-mode and single-mode fibers, the ABB 3BHE012049R0101 can transmit data over distances up to 2 km (multi-mode) or 20 km (single-mode). This allows the ABB UFD128A101 to connect remote I/O cabinets, field substations, and auxiliary control systems located far from the main control room without the need for signal repeaters or costly copper cable installations. The module’s compact, modular design supports DIN-rail or rack mounting, making it adaptable to diverse cabinet layouts.