LG C Series User Manual
Page 75
Chapter 9. Basic functions
9.5
V/F control
z Linear V/F operation
Group
LED Display
Parameter Name
Set
Value
Min/Max
Range
Factory
Defaults
Unit
F22 [Base
frequency]
-
30/400
60.0
Hz
F23 [Start
frequency]
-
0/10.0
0.5
Hz
Function
group 1
F30
[V/F pattern]
0
0/2 0
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.
Run
command
Freq.
Start freq.
Base freq.
Voltage
Inverter rated
voltage
z Square V/F operation
Group
LED Display
Parameter Name
Set
Value
Min/Max
Range
Factory
Defaults
Unit
Function
group 1
F30
[V/F pattern]
1
0/2 0
Set F30 to 1{Square}.
This pattern maintains squared volts/hertz ratio. Appropriate applications are fans, pumps, etc.
Freq.
Base freq.
100%
Voltage
75