SPEED SENSING RELAY MAGNETIC PICK-UP 1KHZ-8KHZ

The TFQ-M provides 2 user adjustable trip levels with LED relay state indication. Trip functions provided are: 1 – 3 – 4 : Dis-engages crank starter. 5 – 6 : Alarms or trips on over speed. A pulse sensing magnetic pick-up at the engine flywheel, produces a high frequency pulse train directly proportional the speed of rotation. The frequency of these pulses is converted to an analogue voltage to provide signal to the trip circuitry. When ordering, the range of speed settings in cycles per second (Hz) for crank cut-off and over-speed must be specified. As the engine starts and the frequency rises, contacts 1-3 close and 1-4 open to cut-off the crank starter. On over-speed, contacts 5-6 close to sound alarm or trip engine....

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