Technical Specifications Input DC voltage range, multiple groups of regulated DC output for backplane bus. Operating power consumption conforms to rack load requirement. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Supports parallel redundant mode.
Functional Features Converts external input power to stable system bus voltage for control rack components. Realizes current sharing when multiple modules work in parallel redundant configuration. Front‑panel LED indicators show power‑on status, output normal condition and fault alarm. Built‑in over‑voltage, over‑current and over‑temperature protection function. Internal self‑diagnosis detects output abnormality and component failure.
Application Scenarios Spare power supply module for AC800F DCS control rack. Applied in process industry redundant control system cabinet maintenance and equipment replacement.
Performance Parameters Stable regulated output performance under variable rack load. Accurate current sharing capability for redundant parallel operation. Fast fault protection response characteristic.
Material Composition Flame‑retardant plastic module housing. Multilayer glass‑fiber epoxy printed circuit board. Switching power conversion circuit, output filter assemblies and protection circuit. Rack back‑plane plug‑in connector and external power input terminals.
Structural Characteristics Standard rack plug‑in module structure. Rear connector connects to rack back‑plane bus. Front panel includes power input terminals and group of status LED indicators. Metal fixing screw for locking onto rack slot.
Working Principle SA811F receives external DC input power. Internal switching circuit completes voltage conversion and filtering, supplies stable DC power to rack back‑plane bus. Under redundant configuration, multiple modules realize current sharing.
Installation Requirements Connect external power source to input terminals. Restore input power, verify output status LED indication, test redundant switch‑over function under simulation fault condition.
Usage Notes Input voltage must comply with module rated specification. Hot‑plug under powered condition is prohibited. Redundancy configuration needs matching system setting parameters.
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