4.5 Auto-Tuning
■ Auto-Tuning for Permanent Magnet Motors
Automatically sets the V /f pattern and motor parameters Б 1-П П , Б 5-П П , and some F1-D D parameters for speed
feedback detection.
Table 4.7 Types of Auto-Tuning for Permanent Magnet Motors
Type
Setting
Requirements and Benefits
M otor D ata Inp u t
T2-01 = 0
• U se if a motor test report is available
• Input motor data from the motor test report. Convert data into the correct unit before inputting data if necessary.
• Motor does not rotate during Auto-Tuning
Stationary A uto-T uning
T2-01 = 1
• U se if a motor test report is not available
• Input motor data from the motor name plate. Make sure to convert data into the correct units. The drive automatically calculates the
motor data.
Stationary Stator R esistance A u to
Tuning
T2-01 = 2
• Tunes stator resistance only.
• Should be performed if the motor cabling has changed.
R otation al B ack E M F C onstan t
A uto-T uning
T2-01 = 11
• U se if a motor test is not available
• Tunes the Motor Induction Voltage only
• Should be performed after Motor data are set and the encoder offset is adjusted.
• The motor must be uncoupled from the mechanical system (rem ove ropes).
Table 4.8
lists the data that must be entered for Auto-Tuning. Make sure the 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
Flowchart C: Auto-Tuning fo r P M Motors on page 93
for details on the tuning mode
selection and the tuning process.
Table 4.8 Auto-Tuning Input Data
Input Value
Input
Parameter
unit
Tuning Type (T2-01)
0
Motor
Parameter
Settings
Stationary
2
Stationary
Stator
Resistance
3
Initial
magnet pole
search
parameters
Auto-Tuning
4
Encoder
offset
stationary
Auto-Tuning
10
Encoder
offset
rotational
Auto-Tuning
11
Back EMF
Constant
C ontrol M ode
A1-02
-
7
7
7
7
7
7
7
M otor rated power
T2-04
kW
Yes
Yes
N /A
N /A
N /A
N /A
N /A
M otor rated voltage
T2-05
V
Yes
Yes
N /A
N /A
N /A
N /A
N /A
M otor rated current
T2-06
A
Yes
Yes
Yes
N /A
N /A
N /A
N /A
N um b er o f m otor poles
T2-08
N /A
Yes
Yes
N /A
N /A
N /A
N /A
N /A
M otor rated Speed
T2-09
min-1
Yes
Yes
N /A
N /A
N /A
N /A
N /A
Stator 1 P h ase resistance
T2-10
Q
Yes
N /A
N /A
N /A
N /A
N /A
N /A
d-axis inductance
T2-11
mH
Yes
N /A
N /A
N /A
N /A
N /A
N /A
q-axis inductance
T2-12
mH
Yes
N /A
N /A
N /A
N /A
N /A
N /A
Induced V oltage con stant U nit
Selection
T2-13
N /A
Yes
N /A
N /A
N /A
N /A
N /A
N /A
V oltage constant
T2-14
<1>
Yes
N /A
N /A
N /A
N /A
N /A
N /A
P G N um b er o f pulses per
revolution
T2-16
N /A
Yes
Yes
N /A
N /A
N /A
N /A
N /A
Z P u lse O ffset
T2-17
deg (m ech.)
Yes
N /A
N /A
N /A
N /A
N /A
N /A
<1> Depends on T2-13 setting.
■ PG Encoder Offset Auto-Tuning
PG encoder Offset Tuning is used for PM motors (A1-02 = 7). It measures the angle between the PG encoder zero
position and the rotor magnet orientation. PG encoder offset tuning should be performed when:
• setting up the drive for the first time.
• after initialization,
• after changing the motor rotation direction (b1-14),
• after changing the encoder rotation direction (F1-05),
• or after replacing the encoder.
Properly set the motor and PG encoder data before performing PG Encoder Offset Tuning.
96
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
