SV-iS7 User Manual - Inverter Drive Supermarket

Chapter 7 Basic Functions
The user can set the pattern suitable for the V/F pattern and load characteristics of a special motor rather than a ordinary
induction motor. BAS-41 User Freq 1 ~ BAS-48 User Volt 4: Select a frequency between the start frequency and
maximum frequency, set the user frequency(User Freq x) and set the voltage corresponding to each frequency at the
user voltage(User Volt x).
Caution
In using an ordinary induction motor, if you set the pattern greatly out of the linear V/F pattern, the torque
might be insufficient or reversely the motor might be overheated.
When the user V/F pattern is being used, the forward torque boost (DRV-16 Fwd Boost) and reverse torque
boost (DRV-17 Rev Boost) do not operate.
7.1.14 Torque boost
1) Manual Torque Boost (When great start torque is necessary for elevator load, etc.)
Group Code No. Function Display Setting Display Setting range Unit
DRV
Voltage
100%
BAS-48
BAS-46
BAS-44
BAS-42
Start
Frequency
15 Torque Boost 0 Manual -
16 Fwd Boost note1) - 2.0 0~15 %
17 Rev Boost note1) - 2.0 0~15 %
note1) Default value of 90~160 kW is 1.0 [%].
This adjusts the output voltage of low speed operation or starting. It can improve the starting characteristic or raise the
low speed torque by increasing the output voltage in the low speed area.
DRV-16 Fwd Boost: adjusts the torque boost in forward rotation.
DRV-17 Rev Boost: adjusts the torque boost in reverse rotation.
BAS-41 BAS-45
Frequency
Base Frequency
BAS-43 BAS-47
Caution
Linear
V/F
Be careful not to set the torque boost too high because the motor might be overheated
by over excitation.
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