6.1.5
au2 : 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
Note1) Parameter displays on the right always return to a fter setting. The previous setting is displayed on the left.
Note2) Auto-tuning is performed at the start of the motor.
Caution:
When the torque boost setting macro function is set, look at the motor's name plate and set the
following parameters.
Set the other motor constants as necessary.
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
Note 2: Setting to automatically programs to .
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Increasing starting torque
Function
Torque boost setting macro
function
Ex.
: Base frequency 1 (rated frequency)
vlv
: Base frequency voltage 1 (rated voltage)
: Motor rated capacity
: Motor rated current
: Motor rated speed
(automatic torque boost control) and the auto-tuning parameter to (auto-tuning).
Adjustment range
0: -
1: Automatic torque boost + auto-tuning
2: Vector control + auto-tuning
3: Energy saving + auto-tuning
F-9
E6581611
Default setting
0
6
Refer to section 6.25