Technical Specifications 24VDC auxiliary power, dual AC pulse input, single isolated pulse output. Operating temperature: -40℃ ~ +70℃.
Functional Features Dual speed signal monitoring, automatic signal switching, fault alarm for broken speed probe, waveform reshaping.
Application Scenarios Gas turbine, steam turbine and large diesel engine governing systems requiring redundant speed measurement.
Performance Parameters Fast fault detection and switching, no pulse loss during switching, low signal distortion.
Structural Characteristics DIN rail signal conditioning board, probe fault and valid signal LED indicators.
Working Principle The board continuously monitors the amplitude and integrity of two speed pulse signals. If one signal is abnormal, it automatically switches to the backup speed channel for output.
Installation Requirements Two speed probes shall be independent and routed separately, use shielded twisted pair for all pulse wiring.
Usage Notes Test signal switching function during commissioning, inspect both speed probes periodically.
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