Toshiba TOSVERT VF-AS3 Instruction Manual page 213

5. 3. 5 Setting parameters for torque boost and energy
saving easily
<AU2: Torque boost macro>
Basic parameter
■ Function
This parameter is used to set V/f Pattern of the inverter and offline auto-tuning of motor parameters
simultaneously for machinery that requires torque boost and energy saving.
■ Parameter setting
Title Parameter name
AU2 Torque boost macro
• Before setting <AU2: Torque boost macro>, look at the motor name plate and be sure to set the
following parameters.
- <vL: Base frequency 1> (Rated frequency)
- <vLv: Base frequency voltage 1> (Rated voltage)
- <F405: Motor rated capacity>
Important
- <F415: Motor rated current>
- <F417: Motor rated speed>
Set other motor parameters as necessary.
■ Selection of setting value
1: Automatic torque boost + offline auto-tuning
This is applied to loads that require torque.
The load current in the speed range from startup to base frequency is detected and the output
voltage (torque boost) from the inverter is automatically adjusted. This gives steady torque for stable
operation.
• When <AU2: Torque boost macro> is set to "1", <Pt: V/f Pattern> is set to "2" automatically.
• The same characteristics can be obtained by setting <Pt> to "2: Automatic torque boost" and
<F400: Offline auto-tuning> to "2: Auto-tuning at run command (0 after execution)". For details,
refer to [6. 23. 1].
AU2 : Torque boost macro
0: Disabled
1: Auto torque boost + auto-tuning
2: Vector control 1 + auto-tuning
3: Energy savings + auto-tuning
Adjustment range
0: Disabled
1: Automatic torque boost + offline auto-tuning
2: Vector control 1 + offline auto- tuning
3: Energy savings + offline auto-tuning
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5. [Fundamental operation] How to use parameters
E6582062
STOP 0.0Hz
15:24
Default
setting
0
3
4
5
9