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ABB UNS2880b‑P,V2 3BHE014967R0002 COB Main Control Board

Technical SpecificationsModel: UNS2880b‑P,V2Part No: 3BHE014967R0002Power Supply: 24V DC (15%), typical power consumption 6.5WApplicable System: ABB UNITROL 5000 static excitation
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Products Description
Technical Specifications

  • Model: UNS2880b‑P,V2

  • Part No: 3BHE014967R0002

  • Power Supply: 24V DC (±15%), typical power consumption 6.5W

  • Applicable System: ABB UNITROL 5000 static excitation system

  • Main Function: AVR voltage regulation, PSS power system stabilization, excitation limit‑protection algorithm, real‑time logic calculation

  • Processor: 32‑bit high‑speed RISC industrial microprocessor

  • Memory: Flash memory for firmware, non‑volatile memory for parameter storage

  • Communication: Internal system bus, RS485 Modbus RTU, interconnect with I/O and communication boards

  • Isolation: 2kV AC galvanic isolation between field signals and control logic

  • Operating Temperature: ‑10℃ ~ +60℃; Storage temperature:‑40℃ ~ +85℃

  • Humidity: 5%‑95% RH, non‑condensing

  • Protection Class: IP20 (cabinet internal installation)

  • Mounting: Rack plug‑in installation for UNITROL5000 excitation cabinet

  • Dimension: 296mm × 254mm ×22mm; Weight: approx 0.67kg

UNS2880b‑P,V2 (3BHE014967R0002) is the core COB control board of ABB UNITROL5000 static excitation system, V2 upgraded hardware version. It undertakes core real‑time control tasks for synchronous generator excitation.
This controller board executes automatic voltage regulation, PSS power oscillation damping, multiple excitation limit and protection functions. It cooperates with UNS2882A I/O board, UNS0887A‑P communication board to complete signal acquisition, logic operation and external data interaction. It supports parameter saving, fault event recording and disturbance data capture. Industrial‑grade EMC hardware adapts to harsh electromagnetic environment of thermal power and hydropower excitation cabinets. On‑board LED indicators display power‑on, running and fault alarm status for on‑site inspection and troubleshooting.
When replacing spare parts, verify full part number and hardware revision to ensure system compatibility. Complete power‑off and discharge operations before installation, configuration parameters need to be re‑downloaded after board replacement. Suitable for on‑site fault replacement and long‑term spare‑part stocking of existing UNITROL5000 excitation equipment.


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