ABB UFC921A101 3BHE024855R0101 Power Driver & Fiber‑Optic Trigger Interface Board

Description

Hardware & Electrical Specifications

• Model：UFC921A101
• Part Number：3BHE024855R0101
• Module Type：Power Driver & Fiber‑Optic Trigger Interface Board
• Bus Interface：Internal high‑speed back‑plane connector for main‑processor interaction
• Signal Interface：Multi‑channel fiber‑optic trigger output ports, power‑unit status feedback input channels
• Power supply：24 V DC (18‑32 V DC)
• Max power consumption：14 W
• Galvanic isolation：≥2500 V DC between fiber‑optic power‑side and control‑logic side
• Dielectric strength：2500 V AC 1 minute
• Insulation resistance：＞100 MΩ @ 500 V DC
• On‑board protection：ESD protection, surge suppression for feedback signals, hardware fault latch circuit, conformal coated PCB
• Compatibility note：Cannot run standalone; must match UNITROL6000 system firmware and PPC‑series main‑processor hardware.

Environmental Specifications

• Operating temperature：‑10 ℃ ~ +60 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Inside excitation / converter cabinet rack
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Installation：Plug‑in rack‑mount board
• Interfaces：Internal back‑plane bus connector; front‑panel fiber‑optic ports; status‑signal terminal blocks
• Recommended wire cross‑section：0.75 mm²‑2.5 mm² copper cable for signal terminals
• Terminal tightening torque：0.6‑1.0 N·m
• Weight：approx 0.90 kg
• Dimension：Standard Euro‑card for AC800‑PEC rack

Main Functions

1. Generate high‑precision optical firing trigger pulses for thyristor power bridges according to timing commands from main controller.
2. Receive multi‑channel status feedback signals from power units, perform signal conditioning and filtering, transmit data to main CPU.
3. High‑voltage isolation realized by fiber‑optic link, suppress electromagnetic interference between control rack and high‑power section.
4. Hardware‑level fault detection: detect trigger channel abnormality, power‑unit feedback signal loss, report fault codes to main processor.
5. Board‑level comprehensive self‑diagnosis: monitor on‑board power‑supply, logic circuit and back‑plane link status; upload hardware alarm to UNITROL6000 system.
6. LED status indication:
   • Green LED：Power supply normal, board logic healthy
   • Yellow LED：Trigger pulse output / signal feedback active
   • Red LED：Trigger channel fault / power‑unit feedback fault / board hardware fault

Installation & Wiring Requirements

1. Cut off cabinet total power before installation or replacement. Insert UFC921A101 into assigned rack slot and tighten mounting screws. Hot‑swap is strictly forbidden.
2. Connect optical fibers to front‑panel trigger ports; connect power‑unit feedback signal cables to corresponding terminal blocks; separate high‑power cables and weak‑signal cables to reduce electromagnetic interference.
3. Cabinet protective grounding shall follow ABB AC800‑PEC / UNITROL6000 grounding specification.
4. After replacement, confirm firmware compatibility with main processor, download project parameters, perform trigger pulse test and power‑unit feedback‑signal verification before commissioning.
5. Replacement note: Must verify hardware‑firmware matching before replacement.