Technical Specifications AC input range 85‑264 V AC. Multiple groups of DC output, maximum output power 120 W. Back‑plane power distribution bus interface. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Built‑in over‑voltage, over‑current and over‑temperature protection functions.
Functional Features Completes AC‑to‑DC power conversion for rack‑based control hardware. Distributes stable DC power to each slot via back‑plane bus. Front‑panel LED indicators display power input status, normal output and fault alarm information. Built‑in self‑diagnosis monitors internal conversion circuit and protection trigger status.
Application Scenarios Rack power supply spare part for ABB Advant DCS system. Used for power unit replacement of old‑generation process‑control automation racks.
Performance Parameters High‑efficiency power conversion performance. Complete multi‑level protection mechanism. Fast protection response under abnormal operating conditions.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. High‑frequency switching conversion, rectifier filter and protection assemblies. Back‑plane plug‑in power connector and AC input terminals.
Structural Characteristics Standard rack plug‑in power module. Front side equipped with AC input terminals and status LED indicators. Rear side connects to rack back‑plane power bus. Weight approximately 0.58 kg.
Working Principle External alternating‑current power enters DSPU131 3BSE000355R1 through input terminals. Internal high‑frequency switching circuit finishes voltage conversion, rectification and filtering. Regulated DC power is delivered to rack back‑plane for all plug‑in modules.
Installation Requirements Insert DSPU131 3BSE000355R1 into designated rack slot and lock fixing latch. Connect AC input wiring to front‑end terminals. Confirm back‑plane connector is fully engaged. Restore AC power, measure DC output voltage and check status indication.
Usage Notes Input AC voltage must match module rated working range. Total load power shall not exceed module maximum output capacity. Hot‑plug operation under powered condition is prohibited. Measure output voltage and verify protection function after replacement.
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