LG Electronics SV-iC5 Series manual Basic functions, 9.5 V/F control Linear V/F operation

9. Basic functions

9.5V/F control Linear V/F operation

Group	LED Display	Parameter Name		Set		Min/Max		Factory	Unit
				Value		Range		Defaults
Function	F22	[Base frequency]	-		30/400		60.0		Hz
group 1
	F23	[Start frequency]	-		0/10.0		0.5		Hz
	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.

Base freq.

Start freq.

Freq.

Inverter rated voltage

Voltage

Run command

Square V/F operation

Group	LED Display	Parameter Name	Set		Min/Max		Factory	Unit
			Value		Range		Defaults
Function	F30	[V/F pattern]	1	0/2		0
group 1
Set F30 to 1{Square}.

This pattern maintains squared volts/hertz ratio. Appropriate applications are fans, pumps, etc.

Voltage

100%

Freq.

Base freq.

9-15 SV-iC5