Toshiba Q9 Plus ASD, Installation & Operation Manual

Page: 189 / 434

E6581611
F-9
6
6.1.5 Increasing starting torque

: Torque boost setting macro function

Function
Simultaneously switches inverter output (V/F) control and programs motor constants automatically (On-
line automatic-tuning function) to improve torque generated by the motor. This parameter integrates the
selection of function including vector control and setting of auto-tuning.
[Parameter setting]
Title Function Adjustment range Default setting

Torque boost setting macro
function
0: -
1: Automatic torque boost + auto-tuning
2: Vector c auto-tuning
3: Energy auto-tuning
0
Note1) Parameter displays on the right always return to

 after setting. The previous setting is displayed on the left.
Ex.  
Note2) Auto-tuning is performed at the start of the motor.
1) Increasing torque automatically according to the load
 is set to  (Automatic torque boost + auto-tuning)
When torque boost setting macro function control  is set to 1 (automatic torque boost + auto-tuning),
the inverter keeps track of the load current in any speed range and automatically adjusts the output voltage to
ensure enough torque and stable operation.
Note 1: The same characteristic can be obtained by setting the V/F control mode selection parameter
 to
 (automatic torque boost control) and the auto-tuning parameter  to  (auto-tuning).

Refer to section 6.25
Note 2: Setting  to  automatically programs  to  .
Caution:
When the torque boost setting macro function
 is set, look at the motor's name plate and set the
following parameters.

   : Base frequency 1 (rated frequency)
vlv
 : Base frequency voltage 1 (rated voltage)
 : Motor rated capacity

: Motor rated current
 : Motor rated speed
Set the other motor constants as necessary. 