What is the reason why the plastic film blowing machine trips halfway?

     Tripping is a common protection measure in our lives, but if the old blowout of the plastic blown film machine not only affects production, it also brings a lot of economic losses. Why does the plastic blown film machine trip? Mostly because of the low frequency heat dissipation motor heating, the ordinary motor's own wind blade low frequency heat dissipation is not enough. The heating temperature is not enough to start the overload and cause the inverter to jump or burn the motor. Incorrect adjustment of the inverter parameters will also jump. Knowing the reason is easy, let's improve on these issues.

     First, the choice of the motor, first of all should be based on the average power and upper limit power required for the load movement, converted to the motor shaft side (may have reducer, pulley and other reduction gear) to select the power of the motor, but also consider the overload capacity of the motor .

     Second, the selection of the inverter, the inverter can be selected according to the rated current of the motor, that is, the rated current of the inverter (that is, the upper limit continuous working current in the normal environment) is greater than the rated current of the motor. However, it is necessary to consider the emergence of extreme conditions. Therefore, the inverter also needs to be able to provide a short-time overload current.

     Another thing to note: in an abnormal environment, such as high altitude, high ambient temperature (such as more than 50 degrees less than 60 degrees environment), side-by-side installation (some inverters are installed side by side without derating, some are derating, according to frequency conversion In case of design decision, etc., consider the derating of the inverter.

     Conclusion: The final basis for the selection of the inverter is that the current curve of the inverter includes the current curve of the mechanical load.