Description
Auxiliary supply: 24 V DC, support 9‑36 V DC wide‑range input
Power consumption: ≤15 W
Analog channels: Multi‑channel isolated analog input for generator voltage, stator current, rotor excitation current and cabinet temperature signals; signal conditioning and isolation processing, 16‑bit ADC sampling
Binary I/O: Multi‑group isolated digital input and output channels for cabinet status acquisition and interlock signal transmission
Communication interfaces: AC800PEC rack internal back‑plane bus
Mounting mode: Rack plug‑in module for excitation cabinet AC800PEC rack
Operating temperature: ‑20 ℃ ~ +70 ℃
Storage temperature: ‑40 ℃ ~ +85 ℃
Humidity: 5‑95 %RH non‑condensing
EMC compliance: IEC 61000‑4 series industrial electromagnetic compatibility standards
Dimension & weight: approx. 210 × 145 × 50 mm, weight about 1.3 kg
Certifications: CE approval
Isolation filtering and signal conditioning for generator terminal voltage, stator current, rotor excitation‑current analog signals, restrain field interference noise.
Complete analog‑digital conversion of excitation‑loop measuring signals, transmit sampling data to excitation main‑controller through back‑plane bus.
Collect cabinet‑site binary status signals: breaker auxiliary contact, cooling‑fan status, cooling‑water flow, cabinet‑door interlock and other switch‑quantity signals.
Receive control signal issued by main‑controller, convert and output binary interlock, alarm signal.
Front‑panel LED indicator displays channel working status and fault code.
Hardware self‑diagnosis detects channel abnormality and internal circuit fault, upload fault information to main‑controller.
Configuration and channel parameter setting are completed by UNITROL Configurator and Control Builder M engineering software.
Plug‑in installation inside AC800PEC rack of excitation cabinet. High‑power power‑cables and weak‑signal sampling‑cables shall be laid separately, ensure cabinet grounding reliable. Auxiliary 24 V DC power supply must keep within rated working range. After module replacement, confirm hardware version matches original‑project configuration, download complete excitation‑project configuration file. Perform analog‑channel calibration, binary‑I/O point‑to‑point test, back‑plane bus communication inspection. This module must match excitation main‑controller, cannot run independently. Confirm no hardware self‑diagnosis fault‑alarm before putting‑into‑service. Different suffix versions of UAD149 series cannot be directly interchanged without software adaptation.
Special signal‑processing mixed‑I/O module for UNITROL series static excitation‑systems of medium‑large synchronous‑generators in thermal‑power plants, hydropower plants and industrial self‑power‑stations, used for excitation‑cabinet maintenance and spare‑part replacement.
- Special signal‑processing I/O module for AC800PEC excitation platform, provides signal isolation and conditioning for CT/VT measuring loop, improves anti‑interference ability of excitation‑system sampling channel.
- Integrate multi‑channel analog and binary signal processing resources, undertake signal interface task between field‑side and excitation main‑controller.
- Rack plug‑in mechanical structure, convenient for on‑site replacement and maintenance.
- Hardware channel self‑diagnosis function, convenient for on‑site fault location.
- Important maintenance spare‑part for ABB UNITROL excitation‑systems; pay attention to suffix‑version matching during replacement.
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