Toshiba TOSVERT VF-S11 Instruction Manual page 83

Warning:
When setting the V/F control mode selection parameter (pt) to any number between 2 and 6, be sure
to set at least the following parameters.
(Motor rated current): See the motor's nameplate.
(No-load current of motor): Refer to the motor test report.
(Rated rotational speed of motor): See the motor's nameplate.
Set also other torque boost parameters (
1) Constant torque characteristics
Setting of V/F control mode selection
This is applied to loads with equipment like conveyors and cranes that require the same torque at low
speeds as at rated speeds.
Base frequency voltage
* To increase the torque further, increase the setting value of the manual torque boost
2) Setting for fans and pumps
Setting of V/F control mode selection
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 voltage
to 6), as required.
to (V/F constant)
0
Base frequency
to (variable torque)
0
Base frequency
E-19
E6581158
Output frequency (Hz)
.
⇒ For more details, see 5.12.
Output frequency (Hz)
5