IMPULSE®•G+ & VG+ Series 4 Instruction Manual – February 2017
4-20
Terminal Resistance Auto-Tune (T01-01 = 2) Instructions
This is a non-rotational Auto-Tuning method for the IMPULSE®•G+ Series 4 drive which allows for
Auto-Tuning without decoupling the motor.
This method is recommended for motors configured with the V/f control method when the motor
horsepower and motor rated current are known.
The instructions below will provide a step-by-step procedure to complete the non-rotational segment
of this Auto-Tune function:
1. In preparation for the Auto-Tune, the crane should be unloaded with minimal hook attachments.
2. Using the keypad, browse to the “Auto-Tuning” menu.
3. Choose “Term Resistance” (T01-01 = 2) for the Tuning Mode.
4. Enter the nameplate motor characteristics for Motor Horsepower and Motor Rated Current (T01-
02 and T01-04) until the “Tuning Ready?” screen is reached.
5. Press the green “RUN” key to start the Auto-Tune. It will take up to a few minutes to complete.
During this time, the current will ramp up and down and a high pitched frequency may be audible
coming from the motor; this is normal. When the Auto-Tune has completed, the keypad display
will display an “End Tune Successful” message. Press the “ESC” key twice to exit.
Non-Rotational 2 Auto-Tune (T01-01 = 4) Instructions
This is a non-rotational Auto-Tuning method for the IMPULSE®•VG+ Series 4 drive which allows for
Auto-Tuning without decoupling the motor.
This method is recommended when the motor cannot be decoupled, and the Motor Rated Slip is
known. If the Motor Rated Slip is not known, then the Non-Rotational 1 (T01-01 = 1) is
recommended.
The instructions below will provide a step-by-step procedure to complete the non-rotational segment
of this Auto-Tune function:
1. In preparation for the Auto-Tune, the crane should be unloaded with minimal hook attachments.
2. Using the keypad, browse to the “Auto-Tuning” menu.
3. Choose “Tune-No Rotate2” (T01-01 = 4) for the Tuning Mode.
4. Enter the nameplate motor characteristics (T01-02 ~ T01-10) until the “Tuning Ready?” screen is
reached.
5. Press the green “RUN” key to start the Auto-Tune. It will take up to a few minutes to complete.
During this time, the current will ramp up and down and a high pitched frequency may be audible
coming from the motor; this is normal. When the Auto-Tune has completed, the keypad display
will display an “End Tune Successful” message. Press the “ESC” key twice to exit.
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