The laser engraving machine inverter is used as the spindle motor drive of the laser engraving machine. The main requirements are smooth operation and smooth speed change. Low full speed fluctuation and large low speed torque can guarantee low speed cutting.
Pay attention to the following points when selecting the laser engraving machine inverter:
(1) The purpose of selecting frequency conversion is constant voltage control or constant current control or other.
(2) What kind of load is used for the inverter of the laser engraving machine; for example, whether it is a vane pump or a volumetric pump, etc., special attention should be paid to the performance curve of the load, because the performance curve determines the method and method of application.
(3) The matching problem between the laser engraving machine inverter and the load;
a. Voltage matching; under normal circumstances, the rated voltage of the laser engraving machine inverter should match the rated voltage of the load.
b. Current matching; the rated current of the ordinary centrifugal pump and laser engraving machine inverter is consistent with the rated current of the motor. For special loads, such as deep-water pumps, you need to refer to the motor performance parameters to determine the current and overload capacity of the laser engraving machine inverter with the maximum current.
c. Torque matching; this situation may occur under constant torque load or with a reduction gear.
(4) The capacity of the laser engraving machine inverter of the high-speed motor is slightly larger than that of the ordinary motor. This is because when a laser engraving machine inverter is used to drive a high-speed motor, the high-frequency motor has a small reactance, and an increase in high-order harmonics causes an increase in output current value.
(5) If the laser engraving machine inverter needs to run with a long cable, take measures to suppress the influence of the long cable to the ground coupling capacitor at this time to avoid the insufficient output of the laser engraving machine inverter, so in this case, the laser engraving machine inverter The capacity should be enlarged by one gear or an output reactor should be installed at the output of the laser engraving machine inverter.
(6) For some special applications, such as high temperature and high altitude, the capacity of the laser engraving machine inverter will be reduced at this time. Under such conditions, the capacity of the laser engraving machine inverter should be enlarged by one block.
The power of the laser engraving machine inverter is large or small. Whether to choose high or small power is mainly determined by the situation of the machine itself and the environment. It is not the bigger the better, nor the smaller the better Is suitable for you.
