Technical Specifications Multi‑channel analog feedback signal input, isolated signal output to back‑plane bus. Auxiliary power supplied by excitation rack, typical power consumption 7.0 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, signal isolation voltage 2000 V AC.
Functional Features Collects multi‑group generator‑side analog feedback signals. Executes signal conditioning and galvanic isolation. Transmits processed feedback data to excitation main regulator via back‑plane bus. On‑board LED indicates signal‑channel status. Built‑in hardware self‑diagnosis detects signal‑loop faults.
Application Scenarios Replacement spare‑part for UNITROL series generator excitation systems. Applied for power‑plant excitation‑equipment overhaul and maintenance.
Performance Parameters High‑precision signal conditioning ensures accuracy of feedback data. Galvanic isolation suppresses high‑voltage interference from generator‑side circuits. Self‑diagnosis identifies signal‑loop breakage and board‑level abnormalities.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Analog signal conditioning and optocoupler isolation assemblies. Conformal protective coating. Back‑plane plug‑in connectors and field‑signal input terminals.
Structural Characteristics Plug‑in circuit board matching excitation cabinet rack slot. Board edge equipped with back‑plane bus connector and analog‑signal input terminals. Reserved mechanical fixing holes. Weight approximately 0.67 kilogram.
Working Principle After power‑on, board completes hardware self‑check. Generator‑side feedback analog signals enter through field‑input terminals. After conditioning and galvanic‑isolation processing, feedback data is transmitted to excitation main regulator via back‑plane bus. Internal diagnosis circuit monitors operating state of each signal‑channel.
Installation Requirements Cut off all power sources of excitation cabinet before replacement. Insert XVC768102 3BHB007211R102 into corresponding slot and tighten fixing screws. Ensure back‑plane connector is fully locked. Restore power supply and calibrate analog‑signal sampling precision.
Usage Notes Adopt anti‑static wrist strap during disassembly‑assembly. Do not scratch conformal coating surface. Hot‑plug under powered state is strictly forbidden. Complete feedback‑signal calibration after spare‑part installation.
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