YASKAWA GA700 Series

4.8 Auto-Tuning
186 YASKAWA SIEPC71061705H GA700 Series Technical Manual
4.8 Auto-Tuning
Auto-Tuning uses motor characteristics to automatically set drive parameters for vector control. Think about the
type of motor, drive control method, and the motor installation environment and select the best Auto-Tuning
method.
The keypad will show the messages with prompts to input the necessary parameter information. These prompts
are specified by the selected Auto-Tuning method and the control method setting in A1-02.
◆ Auto-Tuning for Induction Motors
This section gives information about Auto-Tuning for induction motors. Auto-Tuning sets these parameters:
• Motor parameters E1-xx, E2-xx (E3-xx, E4-xx for motor 2)
• Speed feedback detection-use F1-xx (only with CLV)
Note:
Do Stationary Auto-Tuning if you cannot do Rotational Auto-Tuning. There can be large differences between the measured results and
the motor characteristics when Auto-Tuning is complete. Examine the parameters for the measured motor characteristics after you do
Stationary Auto-Tuning.
Table 4.6 Types of Auto-Tuning for Induction Motors
Mode Parameter Settings Application Conditions and Benefits
Applicable Control Method
(A1-02 Setting)
V/f
(0)
CL-V/f
(1)
OLV
(2)
CLV
(3)
AOLV
(4)
Rotational Auto-Tuning T1-01 = 0
• When you can decouple the motor and load the
motor can rotate freely while Auto-Tuning.
• When operating motors that have fixed output
characteristics.
• When it is necessary to use motors that have high-
precision control.
• When you cannot decouple the motor and load, but
the motor load is less than 30%.
x x x x x
Stationary Auto-Tuning 1 T1-01 = 1
• When you cannot decouple the motor and load, but
the motor load is more than 30%.
• When the information from the motor test report or
motor nameplate is not available.
With Stationary Auto-Tuning, the energized drive
stays stopped for approximately 1 minute. During
this time, the drive automatically measures the
necessary motor parameters.
• When operating the motor with a light load after
Auto-Tuning.
The drive can automatically calculate the motor
parameter settings necessary for torque control. Set
T1-12 = 1 [Test Mode Selection = Yes] to do a test
run after Auto-Tuning.
- - x x x
Line-to-Line Resistance T1-01 = 2
• After Auto-Tuning, the wiring distance between the
drive and motor changed by 50 m or more.
• When the wiring distance is 50 m or more in the V/f
Control mode.
• When the motor output and drive capacity are
different.
x x x x x
■ Input Data for Induction Motor Auto-Tuning
To do Auto-Tuning, input data for the items in Table 4.7 that have an "x". Before starting Auto-Tuning, prepare
the motor test report or record the information on the motor nameplate as a reference.
Table 4.7 Input Data for Induction Motor Auto-Tuning
Input Data Parameter Unit
Auto-Tuning Mode
(T1-01 Setting)
Rotational Auto-Tuning
(0)
Stationary Auto-Tuning
1
(1)
Line-to-Line Resistance
(2)
Motor Rated Power T1-02 kW x x x
Motor Rated Voltage T1-03 V x x -
Motor Rated Current T1-04 A x x x
Motor Base Frequency T1-05 Hz x x -
Number of Motor Poles T1-06 - x x -