EN-20
4-5 Initialization of motor constants
Input the motor rating parameters. Set the parameters shown in Table 4-5-1. Automatic tuning will
automatically change the parameters, so it is recommended to write down the values set in Table 4-5-2
or Table 4-5-3.
Table 4-5-1
Applicable mode
Parameter No.
Name
C30-0 f0 = 1
B19-0 = 1, 2
B00-0
B00-1
B00-2
B00-3
B00-4
B00-5
B00-6
B00-7
Rated input voltage setting
[No.]
Max/base frequency simple setting [No.]
Motor rated output
[kW]
Rated output voltage
[V]
Max. frequency
(Note 1)
[Hz]
Base frequency
(Note 1)
[Hz]
Motor rated current
[A]
Carrier frequency
(Note 1)
The max. frequency cannot be set below the base frequency, and the base
frequency cannot be set above the max. frequency.
Table 4-5-2
Applicable mode
Parameter No.
Name
Explanation
C30-0 f0 = 1
B19-0 = 1
A02-2
A03-0
B02-0, 1
B02-4, 5
Manual torque boost setting
DC brake voltage
R1: Primary resistance
L
σ
: Leakage inductance
The basic parameters, such as
boost voltage and brake
voltage, are adjusted without
rotating the motor.
Table 4-5-3
Applicable mode
Parameter No.
Name
Explanation
C30-0 f0 = 1
B19-0 = 2
A02-2
A03-0
B02-0, 1
B02-4, 5
A02-5
A02-6
Manual torque boost setting
DC brake voltage
R1: Primary resistance
L
σ
: Leakage inductance
Slip compensation gain
Max. torque boost gain
The parameters related to the
slip compensation and max.
torque boost are adjusted while
rotating the motor.
The magnetic saturation
characteristics are measured at
the voltage boost, and are
adjusted to match the max.
torque boost.
4-6 Automatic tuning and test operation
Automatic tuning measures the constants of the connected motor, and automatically adjusts the
parameters so that the system is used to the fullest.
The VAT300 automatic tuning function performs differ measurements for each of the four control
modes. Carry out automatic tuning each time the motor being used or the applicable control mode is
changed. The automatic tuning mode is set with parameter B19-0 (automatic tuning selection).
Control mode
Automatic tuning mode
• V/f control
• IM speed sensor-less vector control
• IM vector control with speed sensor
• PM motor control with sensor
B19-0 = 1,2
B19-0 = 3, 4, 5
B19-0 = 1, 3, 4,5
B19-0 = 6, 7
B19-0 Name
1
Simple adjustment mode
2
V/f control high-function adjustment mode
3
Vector control basic adjustment mode
4
Vector control expanded adjustment mode
5
No-load voltage operation mode
6
Encoder phase adjustment mode
(Note 1)
7
Magnetic pole position estimation mode
(Note 2)
(Note 1)
B19-0=6 : The encoder phase adjustment mode automatically adjusts the parameters
which set the phase angle between the encoder Z phase pulses and PM motor
U-phase coil. The motor circuit constants are not adjusted automatically.
(Note 2)
B19-0=7 : The magnetic pole position estimation mode is used to adjust the PM motor
control magnetic pole position estimation function. This mode does not
automatically adjust the parameters.
