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Home ... Engineering Information in DC fan motors in Specifications in 5. DC Fan Sensors

DC fan motors - 5. DC Fan Sensors

DC Fan Sensors

Two types of DC fan sensors are available: lock signal and speed signal. The Lock Signal, which outputs the status of the fan motor, is ideal for detecting if the fan motor is rotating or is stopped. The Tachometer signal is set to produce two cycles of rectangular waveform as the fan motor makes one rotation, thus providing an ideal sensor for detecting speed.


Output Circuit: Alarm Signal Circuit

Alarm Signal Circuit

Output Circuit: Open Collector

Specification
Vce max : +30V
Vce max : +15V
Ic max : 5mA(Vce(sat)max=0.4V)
TTL output is an available option.

Alarm Signal Output: White, +:Red, -:Black

Alarm Signal Circuit

Output Circuit: Open Drain

Specification
VDS max : +27.6V
ID max : 5mA(Vo(LOW)max=0.5V)

Lock Signal

Output Waveform : At Rated Voltage

This Fan Motor has Three Lead Wires

Output Signal: White, +:Red, -: Black
The output signal may correspond to Case 1 or Case 2.
Your design should provide for both waveforms.

Tachometer Signal

Output Waveform : At Rated Voltage


T=T1+T2+T3+T4=1 Rotation, T1=T2=T3=T4=60/4m m: Rotation Speed min-1
The output signal may correspond to Case 1 or Case 2. Your design should provide for both waveforms.

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