Inverter is CNC engraving machine spindle motor drive, it can make the CNC engraving machine runs smoothly, speed change smooth, full speed shake small, low speed torque, can ensure low speed cutting. Visible role of the frequency converter is very important, in order to make the inverter to the normal work, its working environment has the following requirements:

1. The frequency converter should be installed in the CNC engraving machine internal control cabinet.

2. Inverter had better install in CNC engraving machine control the central part of the ark; Inverter to perpendicular installation, is above and below to avoid installation may stop exhaust, into the wind large components.

3. Inverter, and at the bottom edge distance CNC engraving machine control cabinet the top, bottom, or toe boards, or must be installed large components the minimum distance etc, should be more than 300 mm.

4. If the users in the use of special need take down the keyboard, the frequency converter of panel keyboard hole, must use tape sealing or false panel by strict replacement, prevent dust entered the internal frequency converter.

5. In the more dust place, especially the metal dust, that use of the place of the floe inverter, the general requirements for CNC engraving machine control cabinet integral seal, designed for ventilation outlet, 2; CNC engraving machine control cabinet should have defend the net top and protective cover of the outlet; CNC engraving machine control cabinet should have the bottom floor and wind path, into line hole, and install dustproof nets.

6. Most manufacturers of printed circuit board, frequency converter internal metal structure are not preventing moisture of mildew special treatment, if converter long-term in poor working conditions, a metal structure easy to produce rust. Conductive copper platoon in high temperature operation conditions will be more aggravate the corrosion process, for microcomputer control board and drive power board of tiny copper wire, rust will cause damage. So, for application in damp and contain corrosive gas occasions, to use the internal design of the frequency converter are basic requirements, such as PCB must use three paint processing, for structure must use nickel plating chromium process. In addition, still need to take other active and effective and reasonable preventing moisture, anticorrosion gas measures.