Toshiba Tosvert VF-S15 Instruction Manual page 124

When vector control cannot be programmed....
First read the precautions about vector control in section 6.3.9).
1) If the desired torque cannot be obtained  Refer to section 6.25 selection 2
2) If auto-tuning error "" appears  Refer to section 6.25 selection 4
  (Torque boost setting macro function) and  (V/F control mode
selection)
 Displays  after resetting

 Vector control + auto-tuning
6
 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 ,
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.

Automatic torque boost +
auto-tuning
Set V/F control mode selection  =  (V/F constant).
Note 7: To further increase torque, increase the torque boost value 1().
How to set the torque boost value 1()
Note 8: 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 control

Vector control

Energy-saving

F-12
E6582175

-
Auto-tuning
executed

(after execution: 0)
Auto-tuning
executed

(after execution: 0)
Auto-tuning
executed

(after execution: 0)
 Refer to section 6.3
 Refer to section 6.4
 Refer to section 6.3