The DT240 VFD is the standard general purpose Variable Frequency Drive/AC Drive.

For alternating current asynchronous motors, it supports V/F, open-loop vector, and closed-loop vector control. 
For permanent magnet synchronous motors, it supports both open-loop vector control and closed-loop vector control. 

For high-speed permanent magnet synchronous motors, it supports open-loop vector control, which is particularly suitable for applications involving high-speed silent permanent magnet synchronous motors, such as high-speed fans, and high-speed electric spindles.