The effect of engraving machine frequency converter and selection considerations

1) the purpose of using frequency; Constant pressure control or constant flow control, etc.

2) inverter load type; Such as vane pump or pump volume, special attention to the performance of the load curve, the performance curve determines the methods of the application.

3) the inverter and the load matching problem;

I. voltage matching; Engraving machine inverter rated voltage and rated voltage of the load.

II. The current matching; Ordinary centrifugal pump, carving machine rated current of the rated current of the inverter and motor. For a special load such as deep water pump requires the reference performance parameters of the motor,

Engraving machine as determined maximum current inverter current and overload capacity.

III. The torque matching; In the constant torque load or speed reducer that may happen.

4) when using high speed engraving machine inverter drives motor, because of the high speed motor reactance is small, high order harmonics in output current value increases. So for engraving machine of high-speed motor inverter

The selection, its capacity is slightly larger than ordinary motor selection.

5) inverter for long cable runs, at this time to take measures to restrain long cable to the influence of the coupling capacitance, avoid engraving machine inverter output is insufficient, so in this case

, the carving machine to enlarge a frequency converter capacity or in the engraving machine the output of the inverter output reactor installation.

6) for some special applications, such as high temperature, high altitude, at this point would cause engraving machine inverter capacity reduction, carving machine inverter capacity to enlarge a block.