YASKAWA CIPR-GA50C series, Technical Manual

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4.9 Auto-Tuning
134 YASKAWA SIEPC71061753A GA500 Technical Manual
4.9 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.
WARNING! Crush Hazard. Rotational Auto-Tuning rotates the motor at 50% or more of the motor rated frequency. Make sure
that there are no issues related to safety in the area around the drive and motor. Increased motor frequency can cause serious
injury or death.
◆
Auto-Tuning for Induction Motors
This section gives information about Auto-Tuning for induction motors. Set motor parameters E1-xx and E2-xx
(or, for motor 2, E3-xx and E4-xx ) for Auto-Tuning.
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 4.7 Auto-Tuning Mode Selection
Method Parameter Settings Application Conditions and Benefits
Applicable Control
Method
(A1-02 Setting)
V/f
(0)
OLV
(2)
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
Stationary Auto-Tuning 1 T1-01 = 1
• When you cannot decouple the motor and load.
•
When 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 less than 30% light load after
Auto-Tuning.
Set
T1-12 = 1 [Test Mode Selection = Yes] to do a test run after
Auto-Tuning.
- x
Stationary Line-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
■
Input Data for Induction Motor Auto-Tuning
To do Auto-Tuning, input data for the items in Table 4.8 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 4.8 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)
Stationary Line-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 -
Motor Base Speed T1-07 min
-1
x x -
Motor No-Load Current T1-09 A - x -