Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 76)

4.7 Auto-Tuning
u Types of Auto-Tuning
Refer to the tables below to select the type of Auto-Tuning that bests suits the application.
n 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 4.6 Types of Auto-Tuning for Induction Motors
Type Setting Application Conditions and Benefits
Control
Mode
V/f
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.
• Drive and motor capacities differ.
• This setting tunes the drive after the cable between the drive and motor has
been replaced with a cable over 50 m long, assuming that Auto-Tuning has
already been performed.
• This setting should not be used for any vector control modes unless the motor
cable has changed.
YES
Rotational Auto-Tuning for V/f
Control
T1-01 = 3
• This setting is recommended for applications using Speed Estimation Speed
Search or using the Energy Saving function in V/f Control.
• This setting assumes that the motor can rotate while Auto-Tuning is executed
and it increases accuracy for certain functions like torque compensation, slip
compensation, Energy Saving, and Speed Search.
YES
Table 4.7 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.
Table 4.7 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
u Before Auto-Tuning the Drive
Check the items below before Auto-Tuning the drive.
n 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 208 V bypass
drive models and 40 V for 480 V bypass drive 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 OFF key on the HOA keypad.
• When using a motor contactor, make sure it is closed throughout the Auto-Tuning process.
4.7 Auto-Tuning
76 YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual