Toshiba TOSVERT VF-nC3 Instruction Manual page 102

Motor constant must be set
If the motor you are using is a 4P Toshiba standard motor and if it has the same capacity as the inverter,
there is basically no need to set the motor constant. In any other case, set the following parameters
according to the motor's name plate.
 (base frequency 1),  (base frequency voltage 1),  (motor rated capacity),  (motor
rated current),  (motor rated rpm) 
Be sure to set  (rated current of motor) and  (rated speed of motor) correctly, as specified on
the motor's nameplate. For the setting of  (no-load current of motor), refer to the motor test report.
There are three procedures for setting the other motor constants.
1) The sensorless vector control and motor constants (auto-tuning) can be set at a time.
Set the basic parameter  to .
2) The motor constant can be automatically set (auto-tuning).
Set the extended parameter  to .
3) Each motor constant can be set individually.
5) Energy-saving
5
Energy can be saved in all speed areas by detecting load current and flowing the optimum current that fits
the load.
Motor constant must be set
If the motor you are using is a 4P Toshiba standard motor and if it has the same capacity as the inverter,
there is no need to set the motor constant. In any other case, set the following parameters according to the
motor's name plate.
 (base frequency 1),  (base frequency voltage 1),  (motor rated capacity),  (motor
rated current),  (motor rated rpm)
Be sure to set  (rated current of motor) and  (rated speed of motor) correctly, as specified on
the motor's nameplate. For the setting of  (no-load current of motor), refer to the motor test report.
There are three procedures for setting the other motor constants.
1) Automatic energy-saving operation and a motor constant can be set at once.
Set the basic parameter  to .
2) The motor constant can be automatically set (auto-tuning).
Set the extended parameter  to .
3) Each motor constant can be set individually.
6) Cautions for vector control
1) When performing vector control, look at the motor's name plate and set the following parameters.
 (base frequency 1),  (base frequency voltage 1),  (motor rated capacity), 
(motor rated current),  (motor rated rpm)
2) The sensorless vector control exerts its characteristics effectively in frequency areas below the base
frequency (). The same characteristics will not be obtained in areas above the base frequency.
3) Set the base frequency to anywhere from 40 to 120Hz during vector control (=).
Setting of V/F control mode selection  to  (Energy-saving)
⇒ For details, see 1 in 5.2.
⇒ For details, see 6.14, selection 2.
⇒ For details, see 6.14, selection 3.
⇒ For details, see 1 in 5.2.
⇒ For details, see 6.14, selection 2.
⇒ For details, see 6.14, selection 3.
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