Technical Specifications 24VDC power supply, multi-channel dry contact input. Operating temperature: -40℃ ~ +70℃, built-in debounce filter.
Functional Features Switch state cyclic scanning, contact bounce filtering, wire break fault detection, status upload via backplane bus.
Application Scenarios Prime mover safety interlock logic, start-stop sequence control, fault contact monitoring.
Performance Parameters Fast response, stable contact identification, channel surge protection.
Structural Characteristics Rack pluggable module, individual LED indicator for each input channel.
Working Principle Each input channel detects the on-off status of external contacts. After debounce filtering, valid state data is transmitted to the main processor through the backplane bus.
Installation Requirements Install in designated slots of the 9902 rack, separate signal cables from high voltage power cables.
Usage Notes Verify interlock function after replacement, prevent high voltage from invading input channels.
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