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• Specification: Note: This electric fan motor is new-open box, some motors have scratches, nevertheless it doesn't impression utilization If you mind it, please buy with warning Note: The DC brushless motor is provided with a drive board It is exactly forbidden to connect the effective and unfavourable poles of the flexibility delivery The crimson line is connected to the fine pole and the black line is connected to the unfavorable pole If the relationship is wrong, the pressure board will burn out The brand-new ultra-high-speed brushless vacuum cleaner fan in stock has its personal brushless force board The rated voltage is DC28, the relevant voltage is DC24V-DC30V V, the flexibility is constant, and the voltage replace current is also changed to ensure the constant power of the fan The rotation speed of NdFeB high-strength magnetic inner rotor and precision aluminum alloy impeller can't be examined for the time being, nevertheless it is estimated that if the rotation pace exceeds 100000 revolutions, the present at DC28 is 12, the current at DC24V is set 14, the current at DC30V is 11, and the ability is 350W W It helps PWM sign to control the rotation speed, and may also be operated on the easiest speed with just one set of energy supply The suction drive is awfully strong, and it's a brushless fan utilized in high-end micro vacuum cleaners Purchase a brushless fan as a present with a 47K resistor As proven within the above figure Red line: advantageous power delivery Black wire: unfavourable energy delivery Blue line: PWM White line: GND(PWM) This fan has three ways to make it work: 1 The pink line is hooked up to the effective electrode and the black line is attached to the negative electrode You can enter 5V voltage on the blue line and the unfavorable electrode of 5V is connected to the white line The fan also runs at the highest speed 2 The pink line is attached to the wonderful pole, the black line is connected to the negative pole, and the blue line string 1 solely 50K resistors, after which connected to the superb pole The fan runs at the best speed, in order that the fan can run normally with only 1 sets of DC energy supplies If 47K resistors have to be sent, please make clear comments when capturing If no feedback are made, the fan may be shipped randomly three The ordinary connection system is: the pink line is hooked up to the tremendous pole, the black line is connected to the detrimental pole, the blue line is hooked up to the PWM sign (about 5000HZ), and the white line is connected to the GND of the PWM signal, in order that the rotation velocity of the fan would be accurately managed with the task ratio The picture above is the back of the driving force board The photo above is the front of the driver board Fan outer diameter: 60mm Maximum length: 70mm Air inlet: 23mm Line length: about one hundred Weight: 250 grams Voltage: DC28 (rated voltage) Maximum current: 12 A Power: 3500 W Voltage: DC24V Current: 14 A Power: 350 W Voltage: DC30V Current: eleven A Power: 350 W We use a pulse sign generator to test this brushless vacuum cleaner fan The pulse frequency is decided at about 5000 HZ, but there is a bias voltage that buyers and peers should listen in on Its amplitude should be managed between zero V-4V If the voltage is 0, the brushless vacuum cleaner fan cannot be started If the voltage reaches 5V, the fan runs on the very best velocity and cannot be adjusted If the prejudice voltage is between 0 V-3V, the task cycle of 20%-99% can efficiently management the speed, if the prejudice voltage is between 3V-4V, the duty cycle of 10%-90% can effectively control the speed The following measured varied motor current below diverse responsibility cycle: 20% Current 1 A 40% current 4 A 50% latest 5 A 60% recent 7 A 80% latest 10 A 99% recent 12 A When the voltage is DC24V, the present is 14 at the absolute best pace When the voltage is DC30V, the present is 11 on the very best pace It can be considered that the power of the motor is constant When the voltage changes, it's adjusted via the present to make sure that the power of the fan is ready 350W There is also a point to note, this sort of high-power brushless fan is mostly high-power lithium battery energy supply, if it's to switch to the ability supply, please note that the current of the power delivery ought to be at the least 20A or more, if the present of the flexibility delivery is too small, the fan can't even beginning Also, the rated voltage of this fan is DC28, and it's going to be no situation to pressurize to DC30V, but the best voltage should also be controlled beneath DC30V, not exceeding DC30V, because the fan itself is of high energy density, overpressure is simply too much, and there are concerns about adverse reactions ====================================== Package List: Motor x 1PCS and 47K resistor x 1pcs

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