ABB UCD240A101 3BHE022287R0101 | Conformal Coated Communication & Pulse Control Board

Description

At-A-Glance Executive Brief

• Model: UCD240A101 (UCD240), Part No. 3BHE022287R0101 (CCM6080)
• Brand: ABB
• Part Type: Excitation communication & master control board (CCM6080)
• Lifecycle status: OEM legacy obsolete board; stocked for brownfield UNITROL 6000 generator excitation retrofits
• System compatibility: ABB UNITROL 6000 static excitation system, AC800PEC, PPA backplane, pairs with GVD241 power interface board
• Weight: 0.92 kg

Technical Introduction

Failure of the UCD240A101 CCM6080 board interrupts excitation regulation algorithm execution, fiber optic pulse commands and communication to the plant DCS, resulting in loss of generator field control, reactive power instability, excitation trip or inability to synchronize the generator. The ABB UCD240A101 (3BHE022287R0101) CCM6080 is the core control and communication PCB for ABB UNITROL 6000 high-performance static excitation systems. It executes generator voltage and reactive power closed-loop regulation logic, generates high-speed fiber optic firing pulses to the power stage, processes PT/CT analog measurements, and handles excitation protection decision logic. It uses the PPA (Process Access) backplane bus to communicate with AC800PEC and exchanges alarms, measurements and status data with the plant DCS/SCADA via Ethernet and serial links. The conformal coated version provides protection against dust, moisture and corrosive atmospheres in power station environments. It works together with GVD241 power interface board to complete excitation power stage monitoring and drive interface. Thermal, watchdog, overvoltage and overcurrent protection diagnostics are implemented onboard. Thermal, hydro and combined-cycle power plants keep spare UCD240A101 boards to reduce forced outage risk during UNITROL6000 maintenance and migration.

• Best Suited For
  • ABB UNITROL6000 generator static excitation cubicles
  • Synchronous generator field regulation, fiber pulse generation, protection logic and DCS communication
  • Direct drop-in replacement for existing ABB UCD240A101 3BHE022287R0101 CCM6080 excitation control hardware

Core Technical Specifications

Field Engineer’s Tech Notes

• Confirm board revision and firmware match the UNITROL6000 cabinet configuration. Mismatched firmware causes regulation instability or fiber pulse failure.
• This board interfaces with high-voltage excitation circuits. Execute lockout/tagout, discharge DC-link capacitors and verify zero energy before card removal.
• ESD protection mandatory for PCB handling; static discharge can damage DSP core and fiber transceivers.
• Inspect all fiber optic links for scratches, excessive bending or contamination; poor fiber quality leads to missed firing pulses and excitation trip.
• After replacement, download excitation parameters, calibrate PT/CT measurements, test firing pulse sequence and perform full excitation ramp and protection simulation before returning generator online.

Adaptive QA & Testing Protocol

Each UCD240A101 3BHE022287R0101 board is bench tested on UNITROL6000 / AC800PEC test fixture. We verify board boot, watchdog and self-diagnostics. Simulated PT/CT signals are injected to validate voltage/reactive power regulation algorithm. Fiber optic pulse transmit/receive function is validated. PPA backplane and Ethernet communication are checked for stable data exchange. Protection trip logic is verified under simulated overcurrent, overvoltage and overtemperature faults. PCB visual inspection, conformal coating, solder joint and connector continuity test are performed. Full test reports or bench test video clips are available upon request.

Buyer’s FAQ

Q: What is ABB UCD240A101 3BHE022287R0101 used for? A: It is the CCM6080 core communication and control board for ABB UNITROL6000 static excitation systems. It runs generator excitation control algorithms, sends fiber firing pulses to the power stack, processes PT/CT measurements and communicates status/alarms to the DCS.

Q: What warranty applies for refurbished and NSFP UCD240A101? A: Refurbished and NSFP units carry a 12-month hardware warranty. Coverage excludes ESD damage, firmware mismatch, contaminated fiber links, high-voltage transients and incorrect parameter download.

Q: What lead time should I expect? A: Stocked units ship 3–7 business days. If inventory is depleted, lead time increases while we source surplus ABB UNITROL6000 CCM6080 boards.

Q: Is UCD240A101 hot-swappable? A: NOT hot-swappable. The UNITROL6000 excitation system must be fully de-energized, isolated and DC bus capacitors discharged before board replacement.