Product Overview

The UFC921A103, identified by the technical reference 3BHE024855R0103, is a sophisticated communication and signal interface module developed for the ABB UNITROL excitation system family. This board serves as the primary gateway between the excitation control logic and external supervisory networks, facilitating high-speed data synchronization and command execution. It is engineered to handle the rigorous data arbitration required in power generation environments, ensuring that voltage regulation parameters are communicated with zero-drift accuracy. By providing a bridge between the central processor and various fieldbus protocols, the UFC921A103 maintains the integrity of the Distributed Control System (DCS) while allowing for expansive network interoperability.

Hardware Infrastructure and Interface Parameters

This interface board is constructed using high-reliability power electronics and specialized alloy components to ensure thermal stability and signal clarity in high-EMI environments.

• Order Reference: 3BHE024855R0103

• Module Identifier: UFC921A103

• System Lineage: UNITROL Excitation Series

• Protocol Support: Integrated Profibus DP and Ethernet/IP connectivity

• Physical Construction: Robust aluminum alloy housing for advanced heat dissipation

• Module Weight: 0.32 kg

• Form Factor: 33.3 x 15.8 x 3 cm

• Operating Environment: Hardened for extreme temperature gradients (Cold storage to high-heat manufacturing)

• Connectivity: Multi-channel Input/Output terminal support

• Manufacturing Origin: Sweden

• HS Classification: 8537101190

Industrial Deployment and System Utility

The UFC921A103 is a mission-critical component used in global utility and heavy industrial applications where excitation control precision is vital.

• Generator Voltage Regulation: Acting as the communication interface for Automatic Voltage Regulators (AVR) in hydroelectric and gas turbine power plants.

• Multi-Vendor System Integration: Facilitating the exchange of operational data between ABB excitation hardware and third-party PLC or SCADA systems via Profibus DP.

• Synchronous Machine Control: Providing the high-speed feedback loop necessary for managing the field current of large-scale synchronous industrial motors.

• Substation Data Gateway: Serving as an Ethernet/IP node for real-time remote monitoring of excitation health and diagnostic parameters.

• Process Plant Reliability: Utilized in chemical and metal processing facilities to ensure stable power delivery to heavy machinery through precise excitation governance.