Technical Specifications Enhanced multi‑channel analog signal input, isolated signal output to back‑plane bus. Auxiliary power supplied by excitation rack, typical power consumption 7.4 W. Operating temperature ‑10 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, signal isolation voltage 2000 V AC.
Functional Features Optimized multi‑channel analog signal acquisition circuit. Collects generator main‑loop and auxiliary‑loop measurement signals. Realizes high‑precision signal conditioning and galvanic isolation. Transmits processed feedback data to excitation main regulator via back‑plane bus. On‑board LED indicates channel status. Expanded hardware self‑diagnosis coverage for signal‑loop faults. Improved EMC anti‑interference performance.
Application Scenarios Upgraded replacement spare‑part for UNITROL series generator excitation systems. Applied for power‑plant excitation‑equipment renovation and maintenance.
Performance Parameters Higher signal‑sampling precision compared with previous versions. Stronger anti‑interference capability under strong electromagnetic field environment. Self‑diagnosis covers more signal‑loop fault modes.
Material Composition Multilayer glass‑fiber epoxy printed circuit board with optimized layout. High‑precision signal‑conditioning components, optocoupler isolation assemblies. Conformal protective coating. Back‑plane plug‑in connectors and field‑signal input terminals.
Structural Characteristics Plug‑in circuit board with compatible mechanical dimension for excitation rack slot. Board edge equipped with back‑plane bus connector and multi‑channel analog‑signal input terminals. Reserved mechanical fixing holes.
Working Principle After power‑on, board completes hardware self‑check. Multi‑path generator‑side measurement analog signals enter through field‑input terminals. Signals go through high‑precision conditioning and galvanic‑isolation processing.
Installation Requirements Fully cut off excitation cabinet main power and control power before replacement. Insert XVC768117 3BHB007211R117 into designated slot and tighten fixing screws. Confirm back‑plane connector is fully locked. Restore power supply and complete multi‑channel analog‑signal sampling calibration.
Usage Notes Adopt anti‑static wrist strap during disassembly‑assembly. Do not scratch conformal coating surface. Hot‑plug operation under powered state is strictly forbidden. Complete signal‑sampling calibration after spare‑part installation.
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