4.7 Auto-Tuning
114 YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
■ Starting Auto-Tuning
WARNING! Sudden Movement Hazard. The drive and motor may start unexpectedly during Auto-Tuning, which could result in death
or serious injury. Ensure the area surrounding the drive motor and load are clear before proceeding with Auto-Tuning.
WARNING! Electrical Shock Hazard. High voltage will be supplied to the motor when Stationary Auto-Tuning is performed even with
the motor stopped, which could result in death or serious injury. Do not touch the motor until Auto-Tuning has been completed.
NOTICE: Rotational Auto-Tuning will not function properly if a holding brake is engaged on the load. Failure to comply could result in
improper operation of the drive. Ensure the motor can freely spin before beginning Auto-Tuning.
Enter the required information from the motor nameplate. Press to proceed to the Auto-Tuning start display.
Note: These instructions continue from Step 7 in “Enter Data from the Motor Nameplate”.
◆ Parameter Settings during Induction Motor Auto-Tuning: T1
The T1- parameters are used to set the Auto-Tuning input data for induction motor tuning.
Note: For motors that are to be operated in the field weakening range, first perform the Auto-Tuning with the base data. After Auto-
Tuning is complete, change the maximum frequency E1-04 to the desired value.
■ T1-00: Motor 1/Motor 2 Selection
Selects the motor to be tuned when motor 1/2 switching is enabled, i.e., a digital input is set for function H1- = 16.
This parameter is not displayed if motor 1/2 switching is disabled.
Setting 1: Motor 1
Auto-Tuning automatically sets parameters E1- and E2- for motor 1.
Setting 2: Motor 2
Auto-Tuning automatically sets parameters E3- and E4- for motor 2. Make sure that motor 2 is connected to the
drive for Auto-Tuning.
■
T1-01: Auto-Tuning Mode Selection
Sets the type of Auto-Tuning to be used. Refer to Auto-Tuning for Induction Motors on page 109 for details on the
different types of Auto-Tuning.
Step Display/Result
1.
After entering the data listed on the motor nameplate, press to confirm.
2.
Press to activate Auto-Tuning. The drive begins by injecting current into the motor for about 1 min,
and then starts to rotate the motor.
Note: The first digit on the display indicates which motor is undergoing Auto-Tuning (motor 1 or motor 2). The
second digit indicates the type of Auto-Tuning being performed.
3. Auto-Tuning finishes in approximately one to two minutes.
No. Name Setting Range Default
T1-00 Motor 1/Motor 2 Selection 1 or 2 1
No. Name Setting Range Default
T1-01 Auto-Tuning Mode Selection
2, 3 (V/f, V/f w/PG)
0 to 2, 4 (OLV, CLV)
8, 9 (CLV)
2 (V/f, V/f w/PG)
0 (OLV, CLV)
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