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Auto-tuning for Sensorless Vector Control

Note 6: Do not interrupt the auto-tuning procedure by removing power or by using the Stop command, unless it is an emergency. If this does occur, initialize the inverter’s parameters to the factory default settings (see “Restoring Factory Default Settings” on page 6–8). Then reprogram the parameters unique to your application, and initiate the auto-tuning procedure again.

NOTE: When the data of the H Group parameters does not match that of the motor, satisfactory performance may not be obtained during sensorless vector operation. The stabilization adjustment (H_06) is also effective for V/f settings (00 and 01). Optimal performance may not be achieved if the rating of a motor used is more than one frame size smaller than the maximum applicable rating when the sensorless vector function is used. You must disable sensorless vector operation when two or more motors are connected. For optimal motor stability, set H_03 (H203) according to the rating of the motor used, if its rating is not the same as the inverter rating.

Operations and Monitoring