Yaskawa Z1000U HVAC Matrix Bypass - Manual (Page 126)

4.6 Auto-Tuning
u Types of Auto-Tuning
Refer to Table 4.14 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 4.14 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.
• 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.
• 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
• 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.
YES
Table 4.15 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 4.15 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 models
and 40 V for 480 V 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.
4.6 Auto-Tuning
126 YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual