9 Auto-Tuning
76 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
more than 30% of the motor duty rating, the drive will not correctly calculate the motor
parameters and the motor can operate incorrectly.
• When the load is 30% or less of the motor duty rating, you can do Auto-Tuning with the
motor connected to a load.
• Make sure that the motor magnetic brake is released.
• Make sure that external force from the machine will not cause the motor to rotate.
■ Precautions before Stationary Auto-Tuning
• Make sure that the motor magnetic brake is not open.
• Make sure that external force from the machine will not cause the motor to rotate.
WARNING
Electrical Shock Hazard. During Auto-Tuning, the motor will receive high voltage when the
motor is stopped. Do not touch the motor until Auto-Tuning is complete. If you touch a motor that is energized, it
can cause serious injury or death.
■ Automatically Set E2-02 [Motor Rated Slip] and E2-03 [Motor No-Load Current]
If T1-12 = 1 [Test Mode Selection = Yes] when selecting Stationary Auto-Tuning, the drive will
automatically set motor parameters E2-02 [Motor Rated Slip] and E2-03 [Motor No-Load
Current] after Auto-Tuning is complete when you use the motor for the first time in Drive
Mode.
After Stationary Auto-Tuning is complete, use this procedure to do the operation in test mode:
1. Check the E2-02 and E2-03 values on the “Modified Parameters/Fault Log” screen or the
“Parameters” screen.
2. Operate the motor in Drive Mode with these conditions:
• Make sure that you connect all wiring between the drive and motor
• Make sure that a mechanical brake on the motor shaft is not locked
• The maximum motor load must be 30% of the rated load.
• Keep a constant speed of 30% of E1-06 [Base Frequency] (default value = maximum
frequency) or more for 1 second or longer.
3. After the motor stops, examine the values of E2-02 and E2-03 again in the Verify Menu or
Parameter Setting Mode.
4. Make sure that the input data is correct.
When the settings in E2-02 and E2-03 are different than in step 1, the drive set the values
automatically.
■ Precautions before Stationary Auto-Tuning for Line-to-Line Resistance and
Stator Resistance Auto-Tuning
In V/f control, when the motor cable is 50 meters (164 feet) or longer, do Stationary Auto-
Tuning for Line-to-Line Resistance.
WARNING
Electrical Shock Hazard. During Auto-Tuning, the motor will receive high voltage when the
motor is stopped. Do not touch the motor until Auto-Tuning is complete. If you touch a motor that is energized, it
can cause serious injury or death.
■ Precautions before Using Deceleration Rate Tuning and KEB Tuning
Before Deceleration Rate Tuning or KEB Tuning, check these items:
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