4.6 Auto-Tuning
YASKAWA ELECTRIC
SIEP C710616 30B YASKAWA AC Drive T1000A Technical Manual
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4.6
Auto-Tuning
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Types of Auto-Tuning
The drive offers different types of Auto-Tuning for induction motors and permanent magnet motors. The type of Auto-
Tuning used differs further based on the control mode and other operating conditions. Refer to the tables below to select
the type of Auto-Tuning that bests suits the application. Directions on how to execute Auto-Tuning are listed in
.
Note:
The drive will only show Auto-Tuning parameters that are valid for the control mode that has been set to A1-03. If the control
mode is for an induction motor, the Auto-Tuning parameters for PM motors will not be available. If the control mode is for a PM
motor, the Auto-Tuning parameters for induction motors will not be available. Inertia Tuning and ASR Gain Tuning parameters
and setting options will be visible only when the drive is set for operation with Closed Loop Vector or CLV/PM.
n
Auto-Tuning for Induction Motors
This feature automatically sets the V/f pattern and motor parameters E1-
and E2-
(E3-
, E4-
for motor 2)
for an induction motor. In Closed Loop Vector, some F1-
parameters for speed feedback detection are also set up.
Table 4.5 Types of Auto-Tuning for Induction Motors
Note:
When using an induction synchronous motor, the only available selection is Stationary Auto-Tuning for line-to-line resistance.
lists the data that must be entered for Auto-Tuning. Make sure this data is available before starting Auto-
Tuning. The information needed is usually listed on the motor nameplate or in the motor test report provided by the
motor manufacturer. Also refer to page
and
for details on Auto-Tuning process and selections.
Table 4.6 Auto-Tuning Input Data
Type
Setting
Application Conditions and Benefits
Control Mode
V/f
V/f w/PG
OLV
CLV
Rotational Auto-Tuning
T1-01 = 0
• Motor can be decoupled from the load and rotate freely while Auto-
Tuning is performed.
• Motor and load can not be decoupled but the motor load is below 30%.
• Rotational Auto-Tuning gives the most accurate results, and is therefore
highly recommended if possible.
N/A
N/A
YES
YES
Stationary Auto-Tuning 1
T1-01 = 1
• Motor and load can not be decoupled and the load is higher than 30%.
• A motor test report listing motor data is not available.
• Automatically calculates motor parameters needed for vector control.
N/A
N/A
YES
YES
Stationary Auto-Tuning 2
T1-01 = 4
• Motor and load can not be decoupled and the load is higher than 30%.
• A motor test report is available. Once the no-load current and the rated
slip have been entered, the drive calculates and sets all other motor-
related parameters.
N/A
N/A
YES
YES
Stationary Auto-Tuning for
Line-to-Line Resistance
T1-01 = 2
• The drive is used in V/f Control and other Auto-Tuning selections not
possible.
• Drive and motor capacities differ.
• Tunes the drive after the cable between the drive and motor has been
replaced with a cable over 50 m long. Assumes Auto-Tuning has already
been performed.
• Should not be used for any vector control modes unless the motor cable
has changed.
YES
YES
YES
YES
Rotational Auto-Tuning for V/f
Control
T1-01 = 3
• Recommended for applications using Speed Estimation Speed Search or
using the Energy Saving function in V/f Control.
• Assumes motor can rotate while Auto-Tuning is executed. Increases
accuracy for certain functions like torque compensation, slip
compensation, Energy Saving, and Speed Search.
YES
YES
N/A
N/A
Input Value
<1> Input data is needed for CLV/PM only.
Input
Parameter
Unit
Tuning Type (T1-01)
0
Standard
1
Stationary 1
2
Line-to-Line
Resistance
3
Rotational for V/f
Control
4
Stationary 2
Control Mode
A1-02
-
2, 3
2, 3
0, 1, 2, 3
0, 1
2, 3
Motor rated power
T1-02
kW
YES
YES
YES
YES
YES
Motor rated voltage
T1-03
Vac
YES
YES
N/A
YES
YES
Motor rated current
T1-04
A
YES
YES
YES
YES
YES
Motor rated frequency
T1-05
Hz
YES
YES
N/A
YES
YES
Number of motor poles
T1-06
-
YES
YES
N/A
YES
YES
Motor rated Speed
T1-07
r/min
YES
YES
N/A
YES
YES
PG Number of pulses per revolution
T1-08
-
YES
N/A
N/A
YES
Motor no-load current
T1-09
A
N/A
YES
N/A
N/A
YES
Motor rated Slip
T1-10
Hz
N/A
N/A
N/A
N/A
YES
Motor iron loss
T1-11
W
N/A
N/A
N/A
YES
N/A
