Technical Specifications 24VDC power supply, multi-channel dry contact digital input. Operating temperature: -40℃ ~ +70℃, built-in debounce filter.
Functional Features Switch state scanning, contact bounce filtering, channel open-circuit fault detection, status data upload.
Application Scenarios Prime mover safety interlock, start-stop sequence signal collection, auxiliary equipment feedback monitoring.
Performance Parameters Quick state response, reliable contact recognition, surge protection per channel.
Structural Characteristics Rack pluggable module, individual LED indicator for each input channel.
Working Principle The module scans each input channel cyclically, filters unstable jitter signals caused by mechanical contact bounce, and sends valid switch state to the main processor.
Installation Requirements Install in specified slots of the 9904 rack, separate signal wiring from high voltage power lines.
Usage Notes Verify interlock logic after module replacement, prevent high voltage from invading input channels.
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