ABB UNS0119 Modules

Technical Dossier

Product Details And Specifications

ABB UNS0119 Series: Comprehensive Module Range and Technical Overview

The ABB UNS0119 series is a family of control and interface units deployed within ABB's UNITROL and AC800 excitation control platforms. These modules are installed across high-criticality industrial environments including nuclear power stations, combined-cycle gas turbine plants, hydroelectric facilities, and large-scale petrochemical refineries. The UNS0119 designation covers a range of control boards and interface cards that manage excitation regulation, field current control, and inter-system communication within ABB's generator excitation systems. Their long operational lifecycle — often exceeding 20 years in baseload power generation — has made them a primary target for lifecycle extension programs and spare parts procurement globally.

The Evolution of UNS0119 Architecture

The UNS0119 series emerged as part of ABB's UNITROL 5000 and UNITROL 6000 excitation control system generations, succeeding earlier analog excitation regulators. The architecture transitioned from discrete analog signal processing to hybrid digital-analog control boards, enabling higher precision in AVR (Automatic Voltage Regulator) functions. Early variants of the UNS0119 family used parallel backplane communication; later revisions introduced serial fieldbus interfaces compatible with PROFIBUS-DP and ABB's proprietary DDCS (Distributed Drive Control System) protocol. The V3 hardware revision (as in 3BHE030579R0003 UNS0119 A-Z, V3) represents a mature, stabilized hardware generation with improved EMC shielding and extended temperature tolerance. Compatibility between hardware revisions requires careful firmware version matching — substituting a V1 board with a V3 without corresponding firmware updates will result in parameter mismatch faults. As the UNITROL 5000 platform has entered its end-of-active-support phase, ABB no longer manufactures replacement boards on demand; procurement now relies on certified aftermarket suppliers and refurbished stock.

UNS0119 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified part numbers within the ABB UNS0119 and closely associated UNS-series control module range used in UNITROL excitation systems:

3BHE030579R0003 UNS0119 A-Z, V3: Main control unit board, V3 hardware revision, UNITROL 5000/6000 platform.
3BHE030579R0001 UNS0119 A-Z, V1: First-generation control unit board; original production variant.
3BHE030579R0002 UNS0119 A-Z, V2: Intermediate hardware revision with updated gate driver circuitry.
3BHE022452R0001 UNS0880 A: Measurement and I/O interface board for voltage/current signal conditioning.
3BHE024577R0001 UNS0108 A: Digital I/O module, 24 VDC, used for binary signal interfacing in excitation panels.
3BHE024577R0002 UNS0108 B: Revised digital I/O module with extended diagnostic LED indicators.
3BHE013084R0001 UNS0115 A: Analog input/output board for AVR reference signal processing.
3BHE013084R0002 UNS0115 B: Updated analog I/O board with improved 16-bit ADC resolution.
3BHE009681R0001 UNS0110 A: Power supply interface board, 24 VDC regulated output for control electronics.
3BHE009681R0002 UNS0110 B: Power supply board with added overvoltage protection circuit.
3BHE017590R0001 UNS0120 A: Communication adapter board, PROFIBUS-DP slave interface.
3BHE017590R0002 UNS0120 B: Communication adapter with dual-port PROFIBUS and DDCS support.
3BHE004573R0001 UNS0105 A: Thyristor gate pulse board for SCR firing control in excitation bridges.
3BHE004573R0002 UNS0105 B: Gate pulse board with updated isolation transformer for higher dV/dt immunity.
3BHE031859R0001 UNS0125 A: Redundancy switchover module for dual-channel excitation system configurations.
3BHE031859R0002 UNS0125 B: Redundancy module with enhanced watchdog timer and self-test diagnostics.
3BHE006024R0001 UNS0107 A: Field current measurement board, Hall-effect sensor interface.
3BHE006024R0002 UNS0107 B: Updated field current board with extended measurement range to 6000 A.

Sourcing Hard-to-Find & Obsolete UNS0119 Parts

ABB's UNITROL 5000 platform reached end-of-active-manufacturing status, meaning OEM replacement boards are no longer produced to order. DriveKNMS maintains a dedicated inventory of UNS0119-series modules sourced from decommissioned power plant control panels, certified refurbishment programs, and verified surplus stock channels. All units are catalogued by hardware revision and firmware compatibility level. For operators running long-term service contracts on UNITROL-equipped generators, DriveKNMS provides multi-year supply agreements covering critical control boards, I/O modules, and communication adapters. Customers requiring cross-reference validation between obsolete part numbers and current ABB replacement recommendations can submit their existing part numbers for technical review prior to purchase.

Quality Control for the UNS0119 Range

UNS0119-series boards present specific test challenges due to their mixed-signal architecture combining high-speed digital logic with precision analog measurement circuits and high-voltage gate pulse outputs. DriveKNMS applies a structured test protocol for each unit: incoming inspection verifies physical condition of backplane connectors, SMD components, and conformal coating integrity. Functional testing is performed using a dedicated UNITROL 5000 test rig that replicates the actual backplane bus signals and power supply conditions. Each board undergoes AVR loop simulation, I/O channel verification, and communication bus handshake testing. Gate pulse boards (UNS0105 series) are additionally tested under resistive load conditions to verify firing angle accuracy across the full 0°–180° range. Units that pass all test stages are issued a test report and shipped with a 12-month operational warranty.

For procurement inquiries, cross-reference requests, or lifecycle support for ABB UNS0119 series modules: