Technical Specifications Multiple 24 V DC independent power input channels, rated output 24 V DC. Maximum continuous output current 20 A, peak current 25 A for 10 seconds. Typical power consumption 4.5 W, power conversion efficiency reaches 95%. Operating temperature ‑25 ℃ to +70 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Module surface IP20.
Functional Features Continuously monitors voltage quality of each input power source. Executes power‑voting logic to isolate faulty input channel automatically. Provides stable fused DC power output for downstream safety loads. Front‑panel LED indicators display input channel status, output status and fault alarm. Built‑in fault alarm signal output contact.
Application Scenarios Applied for power supply of safety instrumented system SIS in chemical, oil‑gas and power‑generation industries. Used for critical control system requiring high‑availability power supply. Suitable for new project construction and spare‑part replacement.
Performance Parameters Input channel fault switching completes within 50 ms without output power interruption. Output voltage keeps stable under load fluctuation. Over‑current and over‑voltage protection acts rapidly.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Power monitoring chip, power switching and protection components. Flame‑retardant plastic housing. Screw‑type high‑current power terminals. Metal DIN‑rail buckle structure.
Structural Characteristics Standard DIN‑rail mounting module structure. Front panel is equipped with LED status indicators and alarm test button. Both sides arrange power input and output wiring terminals.
Working Principle After power‑on, module completes hardware self‑check. Internal circuit samples voltage value of each input power channel in real‑time. Voting logic judges health status of each power source.
Installation Requirements Fix module on standard 35 mm DIN‑rail inside cabinet. Complete multi‑channel independent 24 V DC power input wiring, and downstream load output wiring strictly according to power design drawing.
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