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Autotuning Mode
Autotuning automatically tunes and sets the required motor constants when operating in the vector control
methods. Always perform autotuning before starting operation.
When V/f control has been selected, stationary autotuning for only line-to-line resistance can be selected.
When the motor cannot be disconnected from the load, perform stationary autotuning. Contact your Yaskawa
representatives to set motor constants by calculation.
The Inverter's autotuning function automatically determines the motor constants, while a servo system's auto-
tuning function determines the size of a load, so these autotuning functions are fundamentally different. The
default setting of the Inverter is for open-loop vector 1 control.
Example of Operation
Set the motor output power (in kW), rated voltage, rated current, rated frequency, rated speed, and number of
poles specified on the nameplate on the motor and then press the RUN Key. The motor is automatically run
and the motor constants measured based on these settings and autotuning will be set.
Always set the above items. Autotuning cannot be started otherwise, e.g., it cannot be started from the motor
rated voltage display.
Constants can be changed from the setting displays. Use the Increment, Decrement, and Shift/RESET Keys to
change the frequency. The user constant will be written and the monitor display will be returned to when the
DATA/ENTER Key is pressed after changing the setting.
The following example shows autotuning for open-loop vector control while operating the motor without
switching to motor 2.
