Variable-frequency Drive (VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply.
The inverter is mainly composed of rectification, filtering, inversion, braking unit, drive unit, detection unit, microprocessor unit, etc. In actual application, the inverter is affected by the surrounding temperature, humidity, vibration, dust, corrosive gas and liquid, etc., and its performance varies greatly. If it is not maintained for a long time, the electronic components inside the inverter will age. Dust and humid air in the working environment will cause serious heating of the electronic components inside the inverter, resulting in failure or reducing the service life of the inverter. Therefore, in the daily maintenance process, it is particularly important to dissipate the heat of the inverter in time.
Causes and countermeasures for inverter heat dissipation:
1. Whether the sound changes abnormally during the operation of the equipment, including whether the motor generates vibration during operation.
2. Whether the temperature of the inverter installation environment is too high or too low. The operating temperature is generally required to be within the range of -10℃~+40℃, preferably around 25℃.
3. Whether the inverter cooling fan is operating normally, including whether the inverter heat dissipation channel is unobstructed and whether there is dust accumulation.
4. Whether the inverter is overheating. An infrared thermometer can be used to detect whether the inverter heat sink is overheated or whether there is any odor. Check whether there is a fault alarm display during the operation of the inverter.
5. Clean the filter of the air inlet duct inside the control cabinet regularly. Effectively remove the surface dust on the inverter to prevent dust from entering the inverter, especially metal dust, to prevent electrical conduction.
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