V/F Control - LG SV-iC5 Series Instruction Manual

9.5

V/F control

Linear V/F operation
Group LED Display
Function
F22
group 1
F23
F30
Set F30 to 0 {Linear}.
This pattern maintains a linear Volts/frequency ratio from F23 - [Start frequency] to F22- [Base frequency]. This
is appropriate for constant torque applications.
F22 – [Base frequency] : Inverter outputs its rated voltage at this level. Enter the motor nameplate
frequency.
F23 – [Start frequency] : Inverter starts to output its voltage at this level.
Square V/F operation
Group LED Display
Function
F30
group 1
Set F30 to 1{Square}.
This pattern maintains squared volts/hertz ratio. Appropriate applications are fans, pumps, etc.
Parameter Name
[Base frequency]
[Start frequency]
[V/F pattern]
Base freq.
Freq.
Inverter rated
voltage
Voltage
Run
command
Parameter Name
[V/F pattern]
Voltage
100%
Base freq.
Set
Value
-
-
0
Start freq.
Set
Value
1
9-15
9. Basic functions
Min/Max Factory
Range Defaults
30/400 60.0
0/10.0 0.5
0/2 0
Min/Max Factory
Range Defaults
0/2 0
Freq.
SV-iC5
Unit
Hz
Hz
Unit