Description
Hardware & Electrical Specifications
- Model：UNS0119A‑P
- Part Number：3BHE029153R0101
- Module Type：Main Control Processor Board
- Bus Interface：Internal system bus for peripheral board interaction
- External Interface：Ethernet communication port, multi‑channel I/O terminal interfaces
- Power supply：24 V DC (18‑32 V DC)
- Max power consumption：12 W
- Galvanic isolation：≥2000 V AC between field‑signal side and control‑logic side
- Dielectric strength：2000 V AC 1 minute
- Insulation resistance：＞100 MΩ @ 500 V DC
- On‑board protection：ESD protection, surge suppression, hardware watchdog, conformal coated PCB
- Compatibility note：Cannot run standalone; dedicated for UNITROL1020 excitation unit, must match corresponding firmware version.
Environmental Specifications
- Operating temperature：‑10 ℃ ~ +60 ℃
- Storage temperature：‑40 ℃ ~ +85 ℃
- Relative humidity：5%‑95% non‑condensing
- Installation location：Inside UNITROL1020 excitation unit housing
- EMC compliance：IEC 61000‑6‑2
- Certifications：CE
Mechanical Data
- Installation：Built‑in main board for UNITROL1020 device
- Interfaces：Internal system bus connector; front‑panel Ethernet port; external 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 0.87 kg
- Dimension：Form‑factor matched for UNITROL1020 housing
Main Functions
- Execute core AVR automatic voltage‑regulation closed‑loop control algorithm for synchronous generator excitation system.
- Implement complete excitation‑related protection logic, fault event recording and alarm processing.
- Process analog & binary input signals, generate control output commands for power unit.
- Support Ethernet communication, realize parameter setting, monitoring and remote data exchange.
- System self‑diagnosis: detect power‑supply abnormality, internal logic fault and peripheral channel failure; generate fault alarm code.
- LED status indication:
- Green LED：Power supply normal, processor running healthy
- Yellow LED：Communication / control loop active
- Red LED：System fault / protection trip alarm
Installation & Wiring Requirements
- Cut off total power supply before replacement. Follow UNITROL1020 service manual for board replacement operation. Hot‑swap is strictly forbidden.
- Connect measuring‑signal, binary I/O and communication cables strictly according to wiring diagram; separate high‑power cables and weak‑signal cables to reduce electromagnetic interference.
- Equipment protective grounding shall comply with ABB UNITROL‑series grounding specification.
- After replacement, download project parameters, verify firmware version consistency, complete regulation‑loop test and protection function simulation before commissioning.
- Replacement note: Only apply for UNITROL1020 unit; cross‑model substitution is not allowed.
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