Auto-Tuning; Auto-Tuning For Induction Motors - YASKAWA GA500 Maintenance & Troubleshooting

6.5 Auto-Tuning

6.5

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! Injury to Personnel. 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.
Method
Rotational Auto-Tuning
Stationary Auto-Tuning 1
Stationary Line-Line Resistance
■
Input Data for Induction Motor Auto-Tuning
To do Auto-Tuning, input data for the items in
motor test report or record the information from the motor nameplate as a reference.
Input Data
Motor Rated Power
Motor Rated Voltage
Motor Rated Current
Motor Base Frequency
Number of Motor Poles
Motor Base Speed
256
Table 6.5 Auto-Tuning Mode Selection
Parameter Settings
T1-01 = 0
T1-01 = 1
T1-01 = 2
Table 6.6
Table 6.6 Input Data for Induction Motor Auto-Tuning
Parameter Unit
T1-02 HP
T1-03 V
T1-04 A
T1-05 Hz
T1-06 -
T1-07 min -1
Application Conditions and Benefits
• 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%.
• 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 you operate the motor with less than 30% load after Auto-
Tuning.
Set T1-12 = 1 [Test Mode Selection = Yes] to do a test run after
Auto-Tuning.
• 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.
that have an "x". Before you start Auto-Tuning, prepare the
Rotational Auto-Tuning
(0)
x
x
x
x
x
x
YASKAWA TOEPYAIGA5001A GA500 DRIVE MAINTENANCE & TROUBLESHOOTING
Applicable Control
(A1-02 Setting)
V/f
(0)
x
-
x
Auto-Tuning Mode
(T1-01 Setting)
Stationary Auto-Tuning Stationary Line-Line
1 Resistance
(1)
x
x
x
x
x
x
Method
OLV
(2)
x
x
x
(2)
x
-
x
-
-
-