Some points that should be paid attention to when selecting frequency converter for woodworking engraving machine
The use of woodworking engraving machine cannot be separated from the operation of frequency converter. There are many factors to consider when choosing frequency converter, some of which need special attention.
The following small series will introduce you to some correct methods for selecting frequency converters for woodworking engraving machines and several parts that cannot be ignored. I hope you can master them.
Today, it mainly analyzes the selection method of the frequency converter of the industrial engraving machine. The frequency converter is used as the spindle motor drive of the woodworking engraving machine. The main requirements are stable operation and smooth speed change.
Small fluctuation at full speed and large torque at low speed can ensure low speed cutting.
Therefore, woodworking engraving machine should pay attention to the following points when choosing frequency converter to prevent damage to woodworking engraving machine.
From the following aspects: Woodworking engraving machine inverter 1)The purpose of adopting frequency conversion; Constant voltage control or constant current control, etc. 2)Load Type of frequency converter for woodworking engraving machine;
Such as vane pump or positive displacement pump, pay special attention to the performance curve of the load, and the performance curve determines the way and method of application. 3)
Matching problem between frequency converter and load of woodworking engraving machine; I. Voltage matching;
The rated voltage of the engraving machine inverter is consistent with the rated voltage of the load. II. Current matching;
The rated current of the frequency converter of ordinary centrifugal pump and engraving machine is consistent with the rated current of the motor.
For special loads such as deep water pumps, it is necessary to refer to the motor performance parameters to determine the current and overload capacity of the engraving machine inverter with the maximum current. III. Torque matching;
This situation may occur when there is a constant torque load or a deceleration device. 4)
When the engraving machine frequency converter is used to drive the high-speed motor, the output current value increases due to the small reactance of the high-speed motor.
Therefore, the selection of engraving machine frequency converter for high-speed motors has a slightly larger capacity than that of ordinary motors. 5)
If the engraving machine inverter is to run with a long cable, measures should be taken to suppress the influence of the long cable on the ground coupling capacitance to avoid insufficient output of the engraving machine inverter. Therefore, under such circumstances, the capacity of the engraving machine inverter should be enlarged by one gear or an output reactor should be installed at the output end of the engraving machine inverter. 6)
For some special applications, such as high temperature, high altitude, at this time will cause the engraving machine Inverter capacity reduction, engraving machine Inverter capacity to enlarge the first gear.
Generally, when choosing the frequency converter of the woodworking engraving machine, you only need to pay attention to the above mentioned, and you can prevent the damage to the woodworking engraving machine.