The braking unit supplier reminds you that when using the frequency converter in hot weather, it is even more important to pay attention to maintenance and upkeep. You should pay attention to the temperature of the installation environment of the frequency converter, regularly clean the dust inside the frequency converter, and ensure the smoothness of the cooling air path. Strengthen inspections and improve the surrounding environment of frequency converters, motors, and circuits. Check if the wiring terminals are securely fastened to ensure the correct and reliable connection of all electrical components. Prevent unnecessary shutdown accidents from occurring.
1. Check the operating status of the frequency converter, whether the voltage and current values during operation are within the normal range.
2. Carefully monitor and record the ambient temperature of the frequency conversion room, which is generally between -5 ℃ and 40 ℃. The temperature rise of the phase-shifting transformer cannot exceed 130 ℃.
3. Avoid direct sunlight, damp areas, and areas with water droplets. Summer is a rainy season, so it is important to prevent rainwater from entering the interior of the inverter (such as rainwater entering through the tailwind outlet).
4. Inverter installation:
(1) The temperature is high in summer, so it is necessary to strengthen the ventilation and heat dissipation of the frequency converter installation site. Ensure that the surrounding air does not contain excessive dust, acids, salts, corrosive and explosive gases.
(2) In order to maintain good ventilation, the distance between the frequency converter and surrounding obstacles should be ≥ 125px on both sides and ≥ 300px above and below.
(3) In order to improve the cooling effect, all frequency converters should be installed vertically. To prevent foreign objects from falling on the air outlet of the frequency converter and blocking the air duct, it is better to install a protective mesh cover above the frequency converter air outlet.
(4) When two or more frequency converters are installed in a control cabinet, they should be installed side by side (horizontally arranged) as much as possible. If vertical arrangement is necessary, a horizontal partition should be installed between the two frequency converters to prevent hot air from the lower frequency converter from entering the upper frequency converter.
5. During normal operation of the frequency converter, a standard thickness A4 paper should be able to firmly adhere to the filter screen at the cabinet door inlet.
6. Regularly clean the fan and air duct according to the on-site environment to prevent blockage; Especially in the textile industry, there is a lot of cotton fluff that needs to be cleaned regularly; However, it should be noted that when cleaning the fan duct, it is strictly prohibited to operate with electricity and safety should be taken into account.
7. La température de la sortie d'air de l'armoire du groupe électrogène de l'onduleur ne peut pas dépasser 55 ℃.
8. Vérifiez régulièrement le système de ventilation et de dissipation thermique du convertisseur de fréquence pour garantir son bon fonctionnement, en particulier le ventilateur intégré. Comment déterminer si ce dernier présente un problème ?
① Vérifiez l'apparence du ventilateur et si le cordon d'alimentation du ventilateur est détaché ou endommagé ; Vérifiez si les pales du ventilateur sont cassées ;
② Écoutez attentivement tout bruit anormal provenant du ventilateur ;
③ Si les deux points précédents sont normaux, veuillez vérifier le paramètre F8-48 (commande du ventilateur de refroidissement) et le régler sur 1. Si le ventilateur ne fonctionne pas, utilisez un multimètre pour vérifier si la tension du ventilateur est normale (environ 24 V). Si ce n'est pas le cas, le ventilateur est peut-être défectueux. Essayez de le remplacer. Si la tension de 24 V n'est toujours pas normale, débranchez le cordon d'alimentation du ventilateur et testez à nouveau la tension de 24 V. Si elle reste normale après le débranchement, cela indique un problème avec la carte d'alimentation. Si elle reste normale après avoir débranché l'alimentation, il se peut qu'il y ait un court-circuit interne dans le ventilateur.