Technical Specifications Multi‑channel rotor analog feedback signal input, isolated signal output. Auxiliary power supplied by excitation rack, typical power consumption 6.5 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated surface, signal isolation voltage 2000 V AC.
Functional Features Collects multi‑group rotor side feedback analog signals. Executes signal conditioning and galvanic isolation. Transmits processed feedback signal to main regulator board. On‑board LED indicates signal channel status. Built‑in hardware self‑diagnosis function. Conformal coating enhances environmental adaptability.
Application Scenarios Internal spare‑part component for generator excitation system. Applied for power plant equipment maintenance and spare‑part replacement.
Performance Parameters High‑fidelity signal conditioning ensures feedback signal accuracy. Galvanic isolation blocks high‑voltage interference from rotor side. Self‑diagnosis detects signal loop breakage and board‑level faults.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Signal conditioning and optocoupler isolation assemblies. Conformal protective coating. Multi‑pin back‑plane plug‑in connectors. Screw‑type signal input terminals.
Structural Characteristics Plug‑in circuit board matching excitation cabinet inner slot. Board edge fitted with back‑plane connector and signal input terminals. Reserved mechanical fixing holes. Weight approximately 0.60 kilogram.
Working Principle After power‑on, board completes hardware self‑check. Rotor feedback signals access the board through input terminals. After conditioning and galvanic isolation processing, signals are transmitted to main excitation regulator via back‑plane connector. Internal diagnosis circuit monitors each signal channel operating state continuously.
Installation Requirements Cut off all power sources of excitation cabinet before replacement. Insert UFD203A101 board into designated slot and tighten fixing screws. Confirm connectors are fully engaged. Restore power supply and verify feedback signal sampling accuracy.
Usage Notes Adopt anti‑static wrist strap during disassembly‑assembly. Do not scratch conformal coating surface. Hot‑plug operation is strictly forbidden. Calibrate feedback signal after spare‑part installation.
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