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CFM-6010-13 Datasheet(PDF) 6 Page - CUI INC |
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CFM-6010-13 Datasheet(HTML) 6 Page - CUI INC |
6 / 7 page cui.com date 07/27/2017 │ page 6 of 7 CUI Inc │ SERIES: CFM-60 │ DESCRIPTION: DC AXIAL FAN Figure 6 Duty Cycle Auto Restart Protection/Current Limit Protection When the fan motor is locked, the device will cut off the drive current within two to six seconds and restart automatically after a few seconds. If the lock situation is continued, the device will work on a repeated cycle of cut-off and restart until the lock is released. (See Figure 1 below). APPLICATION NOTES Figure 1 Current Limit Protection Pulse Sensor/Tachometer Signal/FG Pulse Sensor is for detecting the rotational speed of the fan motor. At locked rotor condition, the signal stops cycling and the output is fixed at VoH or VoL (See Figures 4~5 below). Vs=4~5 V Figure 5 FG Signal Output Circuit: Open Collector Ic=10mA max Figure 4 Output Waveform Lock Sensor/Rotation Detector Lock Sensor is used to detect if the fan motor is operating or stopped. Alarm High: the output will be logical low when fan is operating and be logical high when fan motor is locked. (See Figures 2~3 below). Figure 2 Alarm High Output Waveform Figure 3 RD Signal Output Circuit: Open Collector Ic=5mA max PMW Control Signal A speed control lead can be provided that will accept a PWM signal from the customer circuit to vary the speed of the fan. The change in speed is linear by changing the Duty-Cycle of the PWM. Open collector type and pull-up voltage is changed by maximum operating voltage and sink current by consuming current. (See Figure 6 below). For more information, please visit the product page. |
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