Toshiba TOSVERT VF-MB1, Instruction Manual

Page: 115 / 350

E6581697
E-21
5
+
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 speed)

There are three procedures for setting the other motor constants.
1) Auto torque boost and motor constants (auto-tuning) can be set at once.
To do so, set the basic parameter  to  . ⇒ Refer to section 5.5 for details.
2) The motor constant can be automatically set (auto-tuning).
Set the extended parameter  to  . ⇒ Refer to section 6.21 selection 2 for details.
3) Each motor constant can be set individually.
⇒
Refer to section 6.21 selection 4 for details.
4) Vector control - increasing starting torque and achieving high-precision operation.
Setting of V/F control mode selection  to 3 (Vector control)
Using sensorless vector control will provide the highest torque at the low speed ranges.
(1) Provides large starting torque.
(2) Effective when stable operation is required to move smoothly up from the low speeds.
(3) Effective in elimination of load fluctuations caused by motor slippage.
+
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 speed) 
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  . ⇒ Refer to section 5.5 for details.
2) The motor constant can be automatically set (auto-tuning).
Set the extended parameter

to

.
⇒
Refer to section 6.21 selection 2 for details.
3) Each motor constant can be set individually.
⇒
Refer to section 6.21 selection 4 for details.
5) Energy-saving
Setting of V/F control mode selection

to

(Energy-saving)
Energy can be saved in all speed areas by detecting load current and flowing the optimum current that fits
the load.