YASKAWA P1000

4.7 Auto-Tuning
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Types of Auto-Tuning
The drive offers different types of Auto-Tuning for induction motors. Refer to the tables below to select the type of Auto-
Tuning that bests suits the application. Refer to Start-Up Flowchart on page 124 for directions on executing Auto-Tuning.
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Auto-Tuning for Induction Motors
This feature automatically sets the V/f pattern and motor parameters E1-oo and E2-oo for an induction motor.
Table 4.12 Types of Auto-Tuning for Induction Motors
Type Setting Application Conditions and Benefits
Stationary Auto-Tuning for Line-to-
Line Resistance
T1-01 = 2
• The drive is used in V/f Control and other Auto-Tuning selections are not possible.
• Perform when entering motor data manually while using motor cables longer than 50
m.
• Drive and motor capacities differ.
• Tunes the drive after the cable between the drive and motor has been replaced with a
cable over 50 m long. Assumes Auto-Tuning has already been performed.
Rotational Auto-Tuning for V/f
Control
T1-01 = 3
• Recommended for applications using Speed Estimation Speed Search or using the
Energy Saving function in V/f Control.
• Assumes motor can rotate while Auto-Tuning is executed. Increases accuracy for
certain functions like torque compensation, slip compensation, Energy Saving, and
Speed Search.
Table 4.13 lists the data that must be entered for Auto-Tuning. Make sure this data is available before starting Auto-Tuning.
The necessary information is usually listed on the motor nameplate or in the motor test report provided by the motor
manufacturer. Refer to Start-Up Flowchart on page 124 for details on the Auto-Tuning process.
Table 4.13 Auto-Tuning Input Data
Input Value Input Parameter Unit
Tuning Type (T1-01)
2
Line-to-Line Resistance
3
Rotational for V/f
Control
Motor rated power T1-02 kW YES YES
Motor rated voltage T1-03 Vac – YES
Motor rated current T1-04 A YES YES
Motor rated frequency T1-05 Hz – YES
Number of motor poles T1-06 - – YES
Motor rated Speed T1-07 r/min – YES
Motor iron loss T1-11 W – YES
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Before Auto-Tuning the Drive
Check the items below before Auto-Tuning the drive.
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Basic Auto-Tuning Preparations
• Auto-Tuning requires the user to input data from the motor nameplate or motor test report. Make sure this data is available
before Auto-Tuning the drive.
• For best performance, the drive input supply voltage must be at least equal to or greater than the motor rated voltage.
Note: Better performance is possible when using a motor with a base voltage that is lower than the input supply voltage (20 V for 200 V class
models, 40 V for 400 V class models, and 60 V for 600 V class models). This is particularly important when operating the motor above
90% of base speed, where high torque precision is required.
• To cancel Auto-Tuning, press the STOP key on the digital operator.
• When using a motor contactor, make sure it is closed throughout the Auto-Tuning process.
Table 4.14 describes digital input and output terminal operation while Auto-Tuning is executed.
4.7 Auto-Tuning
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
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Start-Up Programming & Operation