Yaskawa AC Drive Z1000 Bypass Technical Manual Manual do Utilizador descarregar pdf (Página 111)

4.7 Auto-Tuning

Types of Auto-Tuning

Refer to the tables below to select the type of Auto-Tuning that bests suits the application.

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 4.13 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 4.14 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 4.14 Auto-Tuning Input Data

Input Value Input Parameter Unit

Tuning Type (T1-01)

Line-to-Line Resistance

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

Before Auto-Tuning the Drive

Check the items below before Auto-Tuning the drive.

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.

4.7 Auto-Tuning

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