ABB SPDSI22 Digital Input Module

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• Product Overview

  The ABB SPDSI22 Digital Input Module is a high-performance input unit designed for ABB distributed control systems (DCS) and industrial automation platforms. It captures digital signals from field devices—such as switches, alarms, and status indicators—and delivers accurate information to the controller for reliable process monitoring and logic execution.

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  Technical Specifications

  • Model: SPDSI22

  • Module Type: Digital Input Module

  • Number of Inputs: 22 digital input channels

  • Input Signal Level: 24 VDC industrial digital input

  • Input Current: As defined by channel specification

  • Isolation: Electrical isolation between field channels and system bus

  • Noise Filtering: Built-in interference suppression

  • Response Time: Millisecond-level signal acquisition

  • Indicators: LED lights for each input channel

  • Installation Type: Rack/slot mounting

  • Operating Temperature: -20°C to +60°C

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  Key Features & Advantages

  • High-accuracy digital signal acquisition

  • 22 input channels for increased monitoring capacity

  • Strong anti-interference capability, suitable for harsh industrial sites

  • LED status indicators for convenient troubleshooting

  • Electrical isolation enhancing system protection

  • Full compatibility with ABB DCS and automation systems

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  Applications

  • Distributed Control Systems (DCS)

  • PLC automation expansion

  • Digital signal and switch status monitoring

  • Alarm and interlock inputs

  • Pumps, valves, sensors status feedback

  • Petrochemical, power, steel, cement, paper and other industries

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  Safety & Usage Notes

  • Follow wiring polarity and system guidelines strictly

  • Avoid applying high voltage to input terminals

  • Disconnect power before installation or removal

  • Regularly inspect terminal tightness

  • Keep the module in a dry and ventilated environment

  • Avoid installation near high-interference or high-voltage equipment