Fault phenomenon: It can be started, but it will stop immediately after starting, and the equipment will be continuously restarted.

     Fault Analysis and Processing: This type of fault is a device fault that belongs to the sweep mode. The reason is as follows.

     a. The lead angle is too small, and the restart is caused by the commutation failure after startup. The oscilloscope is used to observe the intermediate frequency voltage waveform to adjust the front angle of the inverter to be appropriately adjusted.

     b. The load oscillating frequency signal re-adjusts the scan range of its excitation sweep frequency at the edge of its excitation sweep frequency signal range.