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Introduction fan motor

Time: 2011-02-11 16:28:58

   Fan Motor is a fan hub and blades with the motor, along the outer circumference of the fan hub and a uniform distribution of slots, leaf inserted in the slot by welding, bonding and other methods of permanent connection to the fan blades and hub as one. The overall balance of the fan motor, and can save hours of work required to adjust the balance, weight bolt fan to reduce more than 30%. The utility model using motor run time of vibration and noise were all decreased.


   Although the fan motor has a high reliability, but it is still a mechanical device, when used in a long time, the speed may drop or even stopped, so the best fans running on the real-time monitoring, to facilitate timely detection of problems. Currently, the fan has its own alarm monitoring methods are two types of sensors and speed sensors, alarm sensors can be used in the fan speed falls below a threshold when the alarm signal is given, and the speed signal output [1] Fan  Motor speed can be achieved Real-time monitoring.From the fan alarm signal output circuit are "high" and "low" two states, two levels in accordance with the meaning of the general positive logic system, said high "failure","low" Means "normal. " The circuit from the fan speed signal output pulse is usually in the form, each wave turned his head and said fans around, so that the signal can be provided directly to the host via the data bus for display.Some of the fan speed signal output is not the true speed of the fan, but the speed factor, for example, have each turn 2, 4 or 6 pulses, must be treated to form a true reflection of the fan speed signal. To identify the fan speed is real or a multiple of speed, use the tachometer to measure the actual speed, and then compare the data with the display.The fan speed signal output of the general from the three lead plug, three yellow and black leads are +12 V power and ground, the other is a color line speed signal output line. It should be noted that some three-wire lead is not a fan of the third root signal output line speed, but speed control signal line, through which the input to the fan motor speed control signal.

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