On the protection of the frequency converter, it is necessary to do the work of the position, in this way can the maximum limit to improve its service life. In the meantime, the protection of overheating is an excellent one.
For example, today we will tell you what protection is done by the inverter itself.
1. Equipped with a radiator fan, which is the most overheated protection against overheating.
Many people know that a lot of mechanical equipment to avoid overheating will be equipped with heat fan, frequency converter is no exception. The fan in the converter can take away the heat in the converter box.
Two. The load is too heavy
The load of 1. motor is too heavy, which makes the frequency converter work more than its rated current for a long time. It is necessary to choose a frequency converter that matches the power of the motor.
2. motor shaft mechanical card death, motor block, frequency converter current limiting action, its current limit amplitude less than 120%.
Three. Protection of brake resistance
It is necessary to know that the nominal power of the frequency converter brake resistor is determined according to the request of short time operation. Therefore, if the power on the machine is too long, the inverter will appear overheated. If it is not protected, it will cause trouble or safety accident. When it is found that the condition should be suspended, it should be compared with the use of cooling or the use of high power brake resistance.
Four, the inlet and outlet of cooling air duct must not be blocked. Here is a very basic protection measure. That is to say, usually we have to check whether the outlet of cooling air channel is blocked or blocked, and deal with it in time. In addition to these protection and treatment, the usual use of the time to view and protect.