I. The technical requirements of CNC machine tools for frequency converters

    1. Requires large low-frequency torque;

    2. The dynamic response speed of the torque is fast, and the speed stabilization accuracy is high;

    3. Decelerate and stop immediately;

    4. Carry out the motor parameter self-learning;

    5. Various requirements of frequency command and running command.

Taking the application of Yuanxin YX8000 series high-performance vector inverter in a CNC machine tool factory as an example, the following describes the frequency conversion speed control technology of CNC machine tools.

The inverter has the following superior performance:

     1. Adopting advanced flux control algorithm, realizing the real speed sensorless vector control, the control performance is much better than the traditional V/F control method;

     2. Large starting torque, 0.21Hz / 150% ;

     3. Carrier frequency range 0-14KHz; adaptively adjusted according to the temperature and the load;

      4. Providing excellent 0-10V/0(4) -20mA analog interfaces, the interface can be compatible with most of the CNC system, which is versatile;

     5. Strong overload capacity, 150% rated output current for one minute;

     6. Providing multi-functional output terminal signals, such as fault output signal, running signal, speed-reached signal, which can well satisfy the need for monitoring the system on the spindle speed status.

II. Parameter setting

IV. Onsite pictures of application on CNC machine