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CFM-5015V-150-290 Datasheet(PDF) 7 Page - CUI INC |
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CFM-5015V-150-290 Datasheet(HTML) 7 Page - CUI INC |
7 / 9 page cui.com date 12/11/2017 │ page 7 of 9 CUI Inc │ SERIES: CFM-50V │ DESCRIPTION: DC AXIAL FAN APPLICATION NOTES Figure 1: Auto Start Protection Auto Restart Protection When the fan motor is locked by an external force, the device will temporarily turn off electrical power to the motor and restart automatically when the locked rotor condition is released. Tachometer Signal (Yellow Wire) The tachometer signal is for detecting the rotational speed of the fan motor. The output will be a square wave when fan is operating and logical high (Vcc) when fan motor is locked (See Figures 4~5 below). The relationship between RPM & output pulses from the signal wire is as follows. 1 RPM = 2 Pulses 1 Pulse 1 RPM Run Locked Vsig t VL Vcc Figure 5: Tachometer Output Circuit DC Fan Red (+) Yellow Black (-) Customer Circuit Vcc Ic RL Vcc ≤ max input voltage Ic ≤ 4 mA RL ≥ Vcc/Ic VL ≤ 0.5 V Vsig Figure 4: Tachometer Output Waveform Rotation Detector Signal (White Wire) The rotation detector signal is used to detect if the fan motor is operating or stopped. The output will be logical low (VL) when fan is operating and be logical high (Vcc) when fan motor is locked. (See Figures 2~3 below). Figure 2: Rotation Detector Output Waveform Figure 3: Rotation Detector Output Circuit Run Locked Vsig t VL Vcc DC Fan Red (+) White Black (-) Customer Circuit Vcc Ic RL Vcc ≤ max input voltage Ic ≤ 4 mA RL ≥ Vcc/Ic VL ≤ 0.5 V Vsig Run t Locked For more information, please visit the product page. |
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