Technical Specifications High‑voltage DC input, multi‑channel isolated low‑voltage DC output. Typical power consumption 9.2 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated printed circuit board, isolation voltage 2200 V AC.
Functional Features Generates multiple groups of regulated DC power for drive internal control circuits. Realizes galvanic isolation between primary high‑voltage side and secondary low‑voltage control side. On‑board LED indicates power supply operating status. Built‑in over‑voltage, over‑current and over‑temperature protection functions. Conformal coating delivers moisture‑proof and dust‑proof performance.
Application Scenarios Core replacement spare‑part for ABB SDCS series DC drive units. Widely deployed in metallurgy, paper‑making and rolling mill industrial sites for equipment overhaul and spare‑part replacement.
Performance Parameters Stable output voltage under input voltage fluctuation. Fast protection response when abnormal working condition occurs. High isolation performance suppresses high‑voltage interference to control circuit.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. High‑frequency switching transformer, rectifier and voltage regulation components. Conformal protective coating. Back‑plane plug‑in connectors and high‑voltage input terminals.
Structural Characteristics Standard plug‑in circuit board matching DC drive rack slot. Board edge equipped with back‑plane bus connector and power input wiring terminals. Reserved mechanical fixing holes. Weight approximately 0.71 kilogram.
Working Principle After high‑voltage DC power inputs to the board, internal switching circuit starts to work. High‑frequency transformer completes voltage transformation and galvanic isolation. Rectification and voltage‑regulation circuits generate multiple stable low‑voltage DC outputs for each control module. Protection circuit triggers shutdown action when over‑voltage, over‑current or over‑temperature condition is detected.
Installation Requirements Completely cut off main power and control power of drive cabinet before replacement. Insert 3ADT220090R0003 SDCS‑POW‑1 into designated slot and tighten fixing screws. Confirm back‑plane connector is fully engaged. Restore power supply and verify each low‑voltage output rail.
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