Product Overview

• Part No: SA9923A-E
• Alternative Code: HIEE450964R0001
• Brand: ABB
• Type: Rack-mounted signal processing control module

• Function: Process analog and digital field signals, execute closed-loop control logic, and realize data interaction between main controller and on-site execution devices in power plant excitation and turbine control racks.

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Core Features

• Galvanic isolation between external signal terminals and internal backplane circuit to resist electromagnetic interference
• Onboard LED indicators for power status, running operation and fault alarm prompts
• Conformal coating for dustproof, moistureproof and anti-corrosion performance
• Standard VME rack plug-in structure, supports hot swap under redundant power supply

• Built-in self-diagnosis and short-circuit protection to prevent module damage from abnormal signals

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Technical Specifications

• Power Supply: 24VDC supplied via rack backplane
• Operating Temperature: -40℃ ~ +85℃
• Protection Grade: IP20, only applicable for cabinet internal installation
• HS Code: 85389091

• Supply: Brand new original and fully tested refurbished modules are available in stock

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Compatibility

• Matches ABB Advant OCS DCS system and UNITROL generator excitation control rack

• Direct plug-and-play replacement for modules with identical part number during on-site equipment maintenance

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Application

• Signal acquisition and control loop operation for turbo generator and hydroelectric unit excitation cabinets in thermal power and hydropower stations
• Spare part replacement and inventory backup for industrial automation and power station control cabinets