Toshiba TOSVERT VF-nC3 Instruction Manual page 100

Caution:
When the V/F control mode selection  is set to : Automatic torque boost control, : Vector control, or
: Energy-saving, be sure to set the following parameters according to the motor's name plate.
Set the other motor constants as necessary
1) Constant torque characteristics
This is applied to loads with equipment like conveyors and cranes that require the same torque at low
speeds as at rated speeds.
5
* To increase the torque further, increase the setting value of the manual torque boost .
2) Setting for fans and pumps
This is appropriate for load characteristics of such things as fans, pumps and blowers in which the torque in
relation to load rotation speed is proportional to its square.

: Base frequency 1 (rated frequency)
 : Base frequency voltage 1 (rated voltage) 
 : Motor rated capacity 

: Motor rated current

: Motor rated speed
Setting of V/F control mode selection  to  (V/F constant)
Base frequency voltage


0
Setting of V/F control mode selection  to  (variable torque)
Base frequency voltage


0
Base frequency 
Base frequency 
E-18
E6581595
Output frequency (Hz)
⇒ For more details, see 5.12.
Output frequency (Hz)