Technical Specifications AC input range, stable DC rated output. Built‑in input filter circuit. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Integrated over‑voltage, over‑current and short‑circuit hardware protection.
Functional Features Completes AC‑DC power conversion and output filtering. Provides stable DC power for rack internal I/O and processor modules. Realizes hardware protection when output overload or short‑circuit occurs. Front‑panel indicator lamp displays power supply running status and fault alarm.
Application Scenarios Spare rack power supply unit for ABB industrial automation rack. Applied in process‑control cabinet renovation and maintenance projects.
Performance Parameters Low‑ripple stable DC output performance. Fast hardware protection response under fault condition. Continuous long‑time load‑bearing operation capability.
Material Composition Metal shielding housing. Multilayer glass‑fiber epoxy printed circuit board. Power conversion transformer, rectifier, filter and protection assemblies. Input‑output screw wiring terminals.
Structural Characteristics Standard rack‑mount power unit. Front panel with status indicator. Input and output terminals arranged on side or bottom of module. Mounting holes for rack fixing.
Working Principle AC power inputs to IPS21‑35AD, passes filter and rectifier circuit, converts into stable DC voltage after power conversion circuit. Protection circuit monitors output voltage and current in real‑time and triggers protection action when abnormal load appears.
Installation Requirements Cut off AC input power before replacement. Fasten IPS21‑35AD onto designated rack mounting position. Connect AC input wiring and DC output wiring strictly according to terminal definition. Restore input power, measure DC output voltage value and verify each rack module power‑on condition.
Usage Notes Keep sufficient ventilation space around module for heat dissipation. Hot‑plug under powered state is prohibited. Measure output voltage to conform to rated specification after power‑on.
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