Toshiba TOSVERT VF-nC3 Instruction Manual page 91

If vector control cannot be programmed....
First read the precautions about vector control in 5.11, 6.
1) If the desired torque cannot be obtained ⇒ see 6.14 Selection 2
2) If auto-tuning error "" appears ⇒ see 6.14 Selection 3
(Torque boost setting macro function) and  (V/F control mode
selection)
Automatic torque boost is the parameter for setting V/F control mode selection () and auto-tuning
() together. That is why all parameters related to change automatically when  is changed.

 Displays  after resetting
Automatic torque boost +

auto-tuning

Vector control + auto-tuning

Energy saving + auto-tuning
4) Increasing torque manually (V/F constant control)
This is the setting of constant torque characteristics that are suited for such things as conveyors. It can also
be used to manually increase starting torque.
If V/F constant control is programmed after changing ,
Set V/F control mode selection  =  (V/F constant).
Note 1: To further increase torque, increase the torque boost amount 1.
How to set the torque boost amount 1
Note 2: V/F control selection = 1 (variable torque) is an effective setting for load such as fans and
pumps.
Automatically programmed parameters

Check the programmed value of .
-

Automatic torque boost

Sensorless vector control

Energy saving
E-9
E6581595

-
Executed

( after execution)
Executed

( after execution)
5
Executed

( after execution)
⇒ see 5.11
⇒ see 5.12
⇒ see 5.11