4–36

Auto-tuning for Sensorless Vector Control

Operations and Monitoring

Step

 

Parameter

Parameter Setting or Action

 

 

 

 

 

 

Notes

 

 

 

 

 

 

 

 

Code

Name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

A_82

AVR voltage select

Select output voltage for motor

Voltage setting cannot be greater

 

 

 

200V class: 200/220/230/240

than input voltage

 

 

 

400V class: 380/400/415/440/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

460

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

A_51

DC braking enable

Set = 00 to disable DC braking

Default = 00 (disabled)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

H_01

Auto-tuning

Set = 01 (full auto-tuning

Try using H_01 = 01, if possible.

 

 

Setting

Set = 02 (partial auto-tuning –

If application or load interferes

 

 

 

measures resistance and induc-

with or prohibits motor rotation,

 

 

 

tance only)

then use H_01 = 02.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

—

—

Press the RUN key on the

The inverter actions are:

 

 

 

keypad and wait for the test to

A) .. AC excitation (no rotation)

 

 

 

complete

B)... DC excitation (no rotation)

 

 

 

 

C)... Motor accelerates to 80% of

 

 

 

 

base frequency, then stops.

 

 

 

 

D) Motor accelerates to A20

 

 

 

 

setting frequency, then stops.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

—

—

Interpret results by reading the

Auto-tuning process completed

 

 

 

display pattern

steps A) to D)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto-tuning failed at step A) or B)

13

—

—

Reset Inverter by pressing the

Inverter will display alternating

 

 

 

Stop/Reset Key

pattern on the display and return

 

 

 

 

to parameter menu. Auto-tuning

 

 

 

 

will be OFF. Make any correc-

 

 

 

 

tions and start again at step 10.

NOTE: During step 11, the motor will make a slight humming sound during the AC and DC excitation (A and B) steps of the auto-tuning process. This sound is normal.

NOTE: When the SLV control method is selected with A_44, set the carrier frequency to 2.1 kHz or higher with B_83.