YASKAWA CR700, Техническое руководство, Страница: 188 / 886

3.8 Auto-Tuning
188 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
3.8 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
The following explains the method of Auto-Tuning for induction motors. Set the following parameters for Auto-
Tuning.
• Motor parameters
E1-xx and E2-xx
(
E3-xx and E4-xx
for motor 2,
E7-xx
for motor 3)
• Speed feedback detection-use
F1-xx
(only with Closed Loop Vector Control)
Note:
Stationary Auto-Tuning is used as a replacement measure when Rotational Auto-Tuning cannot be carried out. Consequently, a large
discrepancy between the measured results and the motor characteristics could be observed when the Auto-Tuning is complete. After
performing Stationary Auto-Tuning, check the parameters for the measured motor characteristics.
Table 3.8 Types of Auto-Tuning for Induction Motors
Mode
Parameter
Settings
Application Conditions and Benefits
Applicable Control Methods
(A1-02 Value)
V/f
(0) CL-V/f
(1)
OLV
(2)
CLV
(3)
AOLV
(4)
Rotational Auto-Tuning T1-01 = 0
• When motor can be decoupled from machinery and rotate freely
while Auto-Tuning is performed
• When running motors having fixed output characteristics
• When using motors requiring high-precision control
Rotational Auto-Tuning gives the most accurate results, and is
recommended if possible.
• When motor and load cannot be decoupled but the motor load is
below 30%
- - x x x
Stationary Auto-Tuning T1-01 = 1
• When motor and load cannot be decoupled and the motor load is
greater than 30%
• When information from the motor test report or nameplate is not
available
With Stationary Auto-Tuning, the drive remains stopped while it is
energized for about 1 minute. During this time the necessary motor
parameters are automatically measured.
• When operating the motor with a light load after Auto-Tuning
It is possible to have the drive automatically calculate the motor
parameter settings needed for vector control. Set
T1-12 = 1 [Test
Mode Selection = Yes] to perform the test run after Auto-Tuning.
- - x x x
Stationary Auto-Tuning for
Line-to-Line Resistance
T1-01 = 2
• After Auto-Tuning was carried out, 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 perform Auto-Tuning, input data for the items marked with “ x ” in the following chart. Before starting Auto-
Tuning, prepare the motor test report or nameplate to check.
Table 3.9 Input Data for Induction Motor Auto-Tuning
Input Data Parameters Unit
Auto-Tuning Mode
(T1-01 Value)
Rotational Auto-Tuning
(0)
Stationary Auto-Tuning
(1)
Stationary Auto-Tuning
for 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 (FLA) T1-04 A x x x
Motor Base Frequency T1-05 Hz x x -
Number of Motor Poles T1-06 - x x -
Motor Base Speed T1-07 min
-1
x x -