Technical Specifications Module Type: D20 System Dedicated Power Supply Module Input Power: Wide‑range AC or DC auxiliary input Output: Multiple groups stable DC output for D20 back‑plane Mounting Mode: D20 system rack slot installation Operating Temperature: 0 °C to +60 °C Storage Temperature: ‑40 °C to +85 °C Relative Humidity: 5%‑95%, non‑condensing Mechanical Structure: Standard D20 rack plug‑in module Certifications: CE industrial control power supply compliance
Functional Features Converts input auxiliary power into multi‑channel stable DC power for D20 rack back‑plane. Over‑voltage, over‑current internal protection function for power‑supply circuit. Power status LED indicator reflects real‑time working state of power module. Plug‑in modular design for convenient maintenance and replacement.
Application Scenarios Used as power supply unit for GE WESDAC D20 distributed control system rack. Provides working power for D20 controller and I/O modules, widely applied in electric power substation automation and industrial process control system.
Structural Characteristics Standard plug‑in module housing adapted for D20 rack slot. Gold‑plated back‑plane connector for power output to rack bus. Front‑panel power status indicator LED. Internal high‑efficiency switching power conversion circuit.
Working Principle Input auxiliary power accesses internal switching power conversion circuit. After voltage transformation, rectification and filtering, multiple groups of stable DC voltage are generated. These DC power are transmitted to D20 rack back‑plane bus, supplying power for controller and all functional modules on the rack.
Installation Requirements Insert WESDAC D20 PS module into designated power‑supply slot of D20 system rack. Lock module mechanical buckle to ensure reliable connection with rack back‑plane connector. Complete input auxiliary power wiring according to official wiring diagram. Check power‑on status indicator after energizing.
Usage Notes Input power voltage grade must match module rated specification. Do not overload the D20 rack beyond rated power capacity of D20 PS. Cut off input power before pulling out power‑supply module for maintenance.
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