Technical Specifications Multi‑channel isolated digital input and relay output channels. Auxiliary power supplied by system rack, typical power consumption 6.6 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated surface, channel isolation voltage 2000 V AC.
Functional Features Receives and isolates external equipment status signals. Drives relay output for field device control commands. On‑board LED indicates each channel working state. Executes hardware self‑diagnosis for on‑board circuit. Conformal coating enhances moisture‑proof and dust‑proof performance.
Application Scenarios Internal spare‑part for ABB excitation system and industrial drive equipment. Used for site maintenance and spare‑part replacement of power plant and heavy‑industry automation devices.
Performance Parameters Signal transmission satisfies system real‑time control timing requirement. Galvanic isolation suppresses field‑side electromagnetic interference. On‑board LED provides intuitive channel fault prompt.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Signal conditioning chip, optocoupler isolation and relay drive assemblies. Conformal protective coating. Multi‑pin plug‑in connectors. Screw‑type signal terminals.
Structural Characteristics Plug‑in circuit board structure matching cabinet internal slot. Board edge fitted with back‑plane connector and signal terminals. Reserved mechanical fixing holes. Weight approximately 0.66 kilogram.
Working Principle Main‑controller control command transmits to this board via back‑plane connector. After isolation and drive processing, relay contact outputs control signal to external secondary loop. External device status signal enters from terminals, passes conditioning‑isolation circuit and feeds back to main controller.
Installation Requirements Cut off rack total auxiliary power before replacement. Insert UFC760BE43 board into corresponding slot and tighten fixing screws. Make sure connectors are fully locked. Restore power‑supply, observe LED status and finish system function verification test.
Usage Notes Carry out anti‑static protection during handling. Do not damage conformal coating surface. Forbid hot‑plug operation under powered condition. Check connector contact condition during regular overhaul.
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