Technical Specifications 24VDC power supply, three-channel synchronous pulse input. Operating temperature: -40℃ ~ +70℃, 2oo3 voting logic, redundant trip output contacts.
Functional Features Three-channel speed synchronous measurement, 2oo3 overspeed voting, channel fault diagnosis, trip contact output, fault alarm.
Application Scenarios Large steam turbines, industrial gas turbines, power plant critical rotating equipment protection systems.
Performance Parameters Consistent sampling of three channels, high voting reliability, fast protection response, fault tolerance for single channel failure.
Structural Characteristics Rack pluggable redundant safety module, individual status indicator for each speed channel.
Working Principle The module samples three speed signals simultaneously. It compares each measured speed with the overspeed threshold. Trip command will be generated when at least two channels detect overspeed, and single-channel fault will trigger alarm without causing unnecessary shutdown.
Installation Requirements Each speed sensor uses its own shielded cable, all probes are installed at the same gear wheel.
Usage Notes Test each channel and voting logic regularly, replace sensors with consistent specifications.
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