Fu1-29: Volts/Hz Pattern - LG SV-iS5 Instruction Manual

[Auto Torque Boost]: Inverter outputs high starting
torque by automatic boosting according to the load.
☞
Note: Auto torque boost is only available for the 1
Manual torque boost must be used for the 2
☞
Note: The auto torque boost value is added to the
manual torque boost value.
☞
Note: Auto torque boost is available only when FU2-40
[Control Mode] is set to ' V/F' .
☞
Note: Conduct Auto tuning in FU2-41 [Auto tuning] to use
Auto torque boost effectively.
Output Voltage
100%
Manual
Boost
Value
[Constant Torque Loads: Conveyor, Moving Equip. etc.]
Output Voltage
100%
Manual
Boost
Value
[Ascending and Descending Loads: Parking, Hoist etc.]
Related Functions: FU1-29 [Volts/Hz Pattern]
FU2-40 [Control Mode selection]

FU1-29: Volts/Hz Pattern

FU1? V/F pattern
29 Linear
Factory Default:
Linear
This is the pattern of voltage/frequency ratio. Select the
proper V/F pattern according to the load. The motor
torque is dependent on this V/F pattern.
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motor.
st
nd motor.
Forward and Reverse direction
(Set the same value for FU1-27
and FU1-28)
Output
Frequency
Freq. Base
Forward Direction - Motoring
(Set FU1-27 to a value)
Reverse Direction - Regenerating
(Set FU1-28 to ' 0' )
Output
Frequency
FU1-21
29 0
0
Chapter 6 - Parameter Description [FU1]
[Linear] pattern is used where constant torque is
required. This pattern maintains a linear volts/frequency
ratio from zero to base frequency. This pattern is
appropriate for constant torque applications.
[Square] pattern is used where variable torque is
required. This pattern maintains squared volts/hertz ratio.
This pattern is appropriate for fans, pumps, etc.
[User V/F] pattern is used for special applications. Users
can adjust the volts/frequency ratio according to the
application. This is accomplished by setting the voltage
and frequency, respectively, at four points between
starting frequency and base frequency. The four points
of voltage and frequency are set in FU1-30 through FU1-
37.
Output Voltage
100%
[V/F Pattern: ' Linear' ]
Output Voltage
100%
[V/F Pattern: ' Square' ]
Output Voltage
100%
FU1-37
FU1-35
FU1-33
FU1-31
FU1-30
FU1-32
[V/F Pattern: ' User V/F' ]
93
Output
Frequency
Freq. Base
Output
Frequency
Freq. Base
Output
Frequency
FU1-36
FU1-34 Freq. Base