Technical Specifications 24VDC control power; multi-channel digital input and relay output; surge suppression for relay contacts; hardware channel protection. Operating temperature: -40℃ ~ +85℃.
Functional Features Field switch status acquisition; isolated relay contact output; alarm and interlock signal transmission; channel fault diagnosis.
Application Scenarios Steam turbine, gas engine and large genset control cabinets for logic interlock and alarm circuits.
Performance Parameters Rapid signal response, high contact isolation voltage, reliable switching life under rated load.
Structural Characteristics Rack pluggable PCB, onboard relay group and dedicated wiring terminals.
Working Principle The board collects digital status signals from field switches and sensors and transmits data to the main processor. Upon receiving control commands from the main processor, it energizes or de-energizes internal relays to output dry contact signals to field equipment.
Installation Requirements Separate weak control wiring and high-power load wiring to reduce electromagnetic interference.
Usage Notes Do not exceed the rated voltage and current of relay contacts; inspect contact wear during regular overhaul.
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