In fact, the fan speed controlis engaged in changing the voltage that is applied to the device. If we talk about engines, then the above device is responsible for winding switching. In this case, the frequency of the current can fluctuate substantially.
It is thanks to the fan regulatorselectrical appliances can serve the owner for many years. This is due to the decrease in wear and tear of the important components of the unit. In addition, it is possible to reduce electricity consumption. In turn, at higher speeds, the fan is much quieter.
Thyristor speed controlfan (the circuit is shown below) can be installed exclusively on single-phase equipment. Of the features can be identified a reliable protection system. Thanks to it, the fan speed control prevents overheating of important components. As a result, the revolutions can be controlled by varying the amperage.
As power sources of the devicethere is a network with a voltage of 220 V. At the same time, the average frequency fluctuates around 55 Hz. The maximum voltage deviation is allowed in 15%. Many models of thyristor regulators are equipped with special sensors. The most common devices are those labeled "RTS". They can be used at temperatures from -50 to +50 degrees. In the installation, the fan speed control is quite simple. In this case, the speed indicator is provided for it.
As a rule, the frequency regulator of speedThe rotation of the fan is able to cope with a very high voltage. In this case, the rotation speed changes due to a change in the current strength. Most often this type can be found on various air conditioning systems. In addition, frequency regulators are ideal for devices that use air ventilation. In general, the above devices look quite simple.
They feed from the network with a voltage of 220 V.The output power of the fan should not exceed 500 W. The maximum resistance of the regulator is on the average 300 kOhm, and the control signal of the system can be perceived up to 10 V. Directly the regulator unit consumes 3 V power.
The standard set of the device consists ofcable, as well as a screw-type terminal. The fuses in the device are available with a current strength of at least 3 A. The degree of protection in many models is established by the class "IP21". The frequency regulator of the fan speed can be used at temperatures from -10 to +30 degrees.
Transformer speed governorThe 12V fan is used exclusively for powerful single-phase or three-phase motors. Direct control of revolutions is carried out in a stepwise manner. At the same time, there is an opportunity to establish automatic coordination. Temperature sensors are installed in many models.
In addition, there is an optiontransformer fans regulators with humidity indicators. At the same time, their power can be changed with the help of a timer. These devices are fixed with screws. The device can be equipped with special fixatives for the rigidity of the connection. As an input terminal, there are terminals. Power cables are included in the standard kit.
Resistance transformer controllercan withstand at 400 kOhm. In this case, the control signal is sensed up to 4 V. In addition, a high load of the relay output should be noted. The power consumption of the device on average fluctuates around 12 V. In general, these devices are quite cumbersome in comparison with frequency fans and more expensive fans.
Tri-speed speed controlThe fan is the most complex device of all the types listed above. It is used to control several devices at once. In this case, the motors on them can be set constant, as well as alternating current. Directly, the speed changes quite smoothly.
Также важно отметить, что диапазон напряжения very wide. Three-phase models of regulators are distinguished with special accuracy. To reduce the volume of sound from the operation of the device in the mechanism a special smoothing capacitor is provided. The installation of a triac controller can be different. The most common is recessed mounting, but many manufacturers are able to offer fasteners for external fixation of the device.
The processing of all data ismicroprocessor unit. In turn, there is a sensor for transmitting the signal to the triac control of the fan speed. It is connected through the inlet on the side panel. In addition, the sensor monitors the temperature of the device during operation. The resistance of the unit is constantly regulated.
To eliminate interference that occurs in theoperating time, there is a digital filter. It can also suppress pulse jumps in the system. The resistor of the fan speed regulator is responsible for the current conversion. As a result, with a sharp increase in temperature, the sensor signals the need to reduce the voltage. Further much depends on the preset settings of the triac controller. Thus, by programming, you can change the basic values.
To set the speed controlfan 220V, completely disconnect the power supply. Further it is important to remove the main panel, which is in front of the device. Only then you can detach the cover of the unit. The next step is to install a temperature sensor in the inlet. To connect the power supply system, please refer to the device diagram.
Direct connection to the motorfan is carried out with the help of insulated wires of stranded type. Then an air condenser is connected, which is located next to the temperature sensor. It is very important to check the main socket of the device. For good communication there should not be any pollution. Otherwise, the signal will not reach the microprocessor block. To clean the connector qualitatively, specialists use means to remove copper oxide.
После закрепления верхней крышки незащищенный The area is smeared with paste for good thermal conductivity. As a rule, use the remedy exclusively on a non-drying basis. The side plates of the shimistronic regulator are fixed to the fixators. They are also glued on top for thermal insulation. The width of the strip should not be less than 10 mm. After that, the fan speed regulator 220V can be fixed on the shield. It is important to pay attention to the wiring and do not clamp it during the fixation of the device. The last step of the installation is to connect the power network. After checking the connector for strength, you need to make a test inclusion.
A distinctive feature of many models issmooth speed control. Thus fans should be with a rated current no more than 6 And, and average frequency - around 45 Hz. Power supply regulators is a network with a voltage of 230 V. The degree of protection they have a class "IP 54". A special controller is installed to program the system.
Thanks to the above-mentioned regulators, start-upengine is fairly smooth. In this case, the shaft rotates at a constant frequency. Motor current protection is installed in many models. The minimum speed can be set by the controller.
This function is typical for regulators withpotentiometers of class VM and VX. The reset of the revolutions is regulated by the controller board, and you can see its operation by LED sensors. To stabilize the voltage on the motor winding there is a microcontroller. By eliminating phase outages, you can achieve high energy savings.
Регулятор скорости вращения вентилятора отопителя can significantly reduce the noise from the motor. At the same time, he has convenient external control. As a result, you can significantly reduce electricity consumption.
Нагрузка на линейные выходы в среднем допускается 3 A. In turn, the power consumption of the device is in the range of 4 to 8 V. Fuses in the regulators for air-conditioning systems are installed in the class FUSE, and they are able to pass the limiting current at the level of 5 A. They have a protection class of "IP21". Almost all models are attached to the air-conditioning system exclusively by an external method - using screws. In general, they are quite compact and weigh very little.
