Technical Specifications Adjustable speed range: 500–5000 rpm; 24 V DC nominal supply voltage; SPDT relay output contact, 5 A at 250 V AC; contact rating: 3 A at 30 V DC; operating temperature range: -40°C to +85°C; IP54 enclosure rating; frequency response: 10–100 Hz; setpoint accuracy: ±1% of full scale.
Functional Features Field-adjustable speed setpoint; SPDT relay output for alarm and trip circuits; positive speed actuation; solid-state speed sensing; reverse polarity protection; vibration-resistant design.
Application Scenarios Diesel and gas engine overspeed protection, generator set speed monitoring, compressor and pump drive protection, industrial rotating machinery safety control.
Performance Parameters High setpoint repeatability; fast trip response time below 50 ms; stable operation across wide temperature range; long mechanical and electrical service life.
Material Composition Die-cast aluminum housing, copper wound sensing coil, silver alloy relay contacts, steel adjustment mechanism, flame-retardant terminal block.
Structural Characteristics Compact cylindrical housing; front adjustment screw with locknut; side-entry cable gland; stud mounting configuration; sealed contact chamber.
Working Principle Magnetic pickup senses gear tooth passage and generates frequency signal proportional to speed. When speed exceeds the adjustable setpoint, the internal relay energizes to change contact state, triggering alarm or shutdown circuits.
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