Product Overview

The ABB 3BHE012049R0101, identified by the model UFD128A101, is a high-speed optical transceiver module specifically developed for the UNITROL excitation system family. This module acts as a high-integrity fiber optic interface within Distributed Control Systems (DCS), facilitating long-range, interference-free data transmission between control processors and remote I/O or power electronics. By converting electrical signals into light pulses at a 1310 nm wavelength, the UFD128A101 ensures that critical control data remains immune to the heavy electromagnetic noise (EMI) common in power plant environments. Its gigabit-rate performance provides the low-latency communication required for real-time excitation regulation and transient monitoring of large-scale synchronous machines.

Hardware Specifications and Physical Data

• Component Classification Fiber Optic SFP / Optical Interface Module

• Model Identifier UFD128A101

• Order Number 3BHE012049R0101

• Data Throughput 1 Gbps (Gigabit Ethernet)

• Optical Wavelength 1310 nm

• Connector Architecture LC Duplex Interface

• Networking Compatible with Ethernet Routers and System Bus Gateways

• Unit Mass 0.06kg

• Physical Dimensions 16.1cm x 4cm x 1.8cm

• Manufacturing Origin Sweden

• Tariff Code (HS) 8537101190

• System Status Active

Strategic Deployment and Industrial Scenarios

The 3BHE012049R0101 is predominantly utilized in energy generation facilities where the UNITROL system governs generator excitation. It is an essential component for installations requiring galvanized isolation between control cabinets or across different floor levels of a facility. The 1310 nm specification allows for stable transmission over significant distances without the signal degradation typically associated with copper cabling or lower-grade fiber links. Because it is designed for the industrial sector, the UFD128A101 maintains high performance across a wide temperature range, making it suitable for both indoor turbine halls and outdoor enclosure-based automation. Its plug-and-play compatibility with ABB’s DCS hardware ensures a streamlined path for infrastructure upgrades and network expansion.

FAQ

Q: Can the UFD128A101 be used with standard 1310 nm single-mode fiber?

A: Yes, the 1310 nm wavelength is the industry standard for single-mode fiber optic transmission, providing the high-bandwidth and low-attenuation path necessary for 1 Gbps data rates over extended distances.

Q: What is the benefit of the LC connector on the 3BHE012049R0101?

A: The LC connector is a small-form-factor interface that provides a secure, snap-in connection. This reduces the risk of signal loss due to vibration and allows for higher port density on the controller faceplate.

Q: Is this optical module hot-swappable within a live UNITROL system?

A: While the hardware supports standard SFP insertion, it is recommended to follow ABB’s specific maintenance protocols for your excitation system to ensure that removing the optical link does not trigger a protective system trip.

Q: Does the UFD128A101 require external power?

A: No, the module draws its necessary operating power directly from the SFP slot of the host ABB controller or communication bridge into which it is inserted.

Q: How does this module handle electromagnetic interference?

A: By using light-based transmission rather than electrical signals, the module is inherently immune to EMI and RFI, which is a critical safety feature when routing communication lines near high-voltage busbars or transformers.