Application of basic functions of DC cooling fan

DC cooling fans can be used in different fields. Most customers have different requirements when choosing, and some functions will be added due to environmental reasons. Let’s learn about the application of the basic functions of DC cooling fans!

The FG speed measurement function is used to detect the speed of the cooling fan. When the fan is running, the switching of the N and S poles of the rotor will produce a high and low level change. The speed of the fan.

RD alarm function, the signal pin outputs a low level during operation, and a high level when the rotor is blocked; the external device can distinguish whether the wind is in a running state or a non-running state by detecting the high and low levels.

PWM speed regulation function, fixed frequency, duty cycle speed regulation, the speed regulation is to change the speed of the cooling fan by changing the pulse of a fixed frequency and adjusting its width.

TC function, intelligent temperature control cooling fan It is a fast detection temperature and other ventilation parameters changes, in the standby state, the sensor automatically detects the temperature changes in the surrounding environment, the system control software accurately determines the ventilation conditions, and automatically performs grain storage ventilation Operation, avoid low-efficiency ventilation, invalid ventilation, temperature control function and send relevant parameters to the internal circuit of the controller for processing. When the temperature is too low or too high, the rotation speed of the heating or exhaust fan that drives the external load is controlled by the temperature. The temperature can correspond to different rotational speeds, which improves the efficiency of the cooling fan and reduces the energy consumption.