Technical Specifications On‑board non‑volatile memory storage unit, back‑plane bus data interface. Auxiliary power 24 V DC, typical power consumption 8.4 W. Operating temperature ‑10 ℃ to +55 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated printed circuit board.
Functional Features Stores system configuration, user application program and event log data. Supports data retention after power loss. Executes partial logic data processing tasks. Interacts with main CPU through back‑plane bus. On‑board LED indicates board running and fault status. Built‑in hardware self‑diagnosis for memory access abnormality.
Application Scenarios Spare‑part for old‑generation ABB industrial control rack systems. Used for production‑site equipment maintenance, system renovation and spare‑part replacement.
Performance Parameters Stable long‑term non‑volatile data storage performance. Reliable high‑speed data exchange with main CPU. Self‑diagnosis detects memory read‑write hardware faults.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Industrial‑grade memory chips, logic processing components. Conformal protective coating. Back‑plane plug‑in connectors.
Structural Characteristics Standard plug‑in board structure matching control rack slot. Board edge equipped with back‑plane bus connector. Reserved mechanical fixing holes. Weight approximately 0.73 kilogram.
Working Principle After power‑on, the board completes hardware self‑test and memory initialization. It receives data access instruction from main CPU via back‑plane bus. It completes program and parameter storage, reading and data calculation operations. Event and fault data is saved into non‑volatile memory and will not be lost after power failure. Diagnosis circuit monitors memory access status continuously.
Installation Requirements Cut off rack power supply before replacement. Insert YPK117A 61163280 into designated slot and tighten fixing screws. Confirm back‑plane connector is fully engaged. Restore power supply, download system configuration and complete program function verification.
Usage Notes Strictly implement anti‑static protection during handling. Back‑up all configuration and program data before hardware replacement. Do not scratch conformal coating. Hot‑plug operation under powered condition is forbidden.
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