Technical Specifications Multi‑channel voltage and current sampling signal input, isolated data output to back‑plane bus. Auxiliary power 24 V DC, typical power consumption 6.8 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, signal isolation voltage 2200 V AC.
Functional Features Acquires multi‑group analog sampling signals from power circuit. Completes signal filtering, amplification and galvanic isolation. Transmits processed measurement data to main controller through back‑plane bus. On‑board LED indicates signal channel status. Built‑in hardware self‑diagnosis detects signal loop breakage and short‑circuit faults. Conformal coating delivers moisture‑proof performance.
Application Scenarios Replacement spare‑part for ABB high‑power drive and power conversion equipment. Used for industrial power electronic equipment maintenance and spare‑part replacement.
Performance Parameters High‑fidelity signal processing guarantees measurement precision. Galvanic isolation suppresses high‑voltage interference transmitted from power loop. Self‑diagnosis gives clear alarm information for sampling loop failures.
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 sampling signal input terminals.
Structural Characteristics Plug‑in circuit board matching power 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, the board completes hardware self‑check. Sampling signals from power loop enter through field input terminals. Signals go through filtering, conditioning and galvanic‑isolation processing. Valid measurement data is transmitted to main controller over back‑plane bus. Internal diagnosis circuit continuously monitors each signal channel status.
Installation Requirements Cut off cabinet high‑voltage power and auxiliary control power before replacement. Insert 3BHB021400R0002 into designated slot and tighten fixing screws. Confirm back‑plane connector is fully engaged. Complete field sampling signal wiring. Restore power supply and calibrate measurement accuracy.
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