LG Electronics C Series manual Sensorless vector control, H40 Control mode select

10. Advanced functions

10.9 Sensorless vector control

	Group	LED Display	Parameter Name		Set		Min/Max		Factory		Unit
					value		Range		Defaults
Function		H40	[Control mode select]		3	0/3		0		-
group 2
		H30	[Motor type select]	-		0.2/2.2		-			kW
		H32	[Rated	-		0/10		-			Hz
			slip frequency]
		H33	[Motor rated current]	-		1.0/12		-			A
		H34	[Motor No Load Current]	-		0.1/12		-			A
		H42	[Stator resistance (Rs)]	-		0/14.0		-			Ω
		H44	[Leakage inductance	-		0/300.00		-			mH
			(Lσ)]
		F14	[Time for energizing a	-		0.0/60.0		1.0			Sec
			motor]

ƒIf H40 – [Control mode select] is set to 3, Sensorless vector control will become active.

Caution :

Motor parameters should be measured for high performance. It is highly recommended H41 – [Auto tuning] be done prior to proceeding operation via Sensorless vector control.

Ensure that the following parameters are entered correctly for high performance in Sensorless vector control.

H30: Select motor type connected to inverter output.

H32: Enter rated slip frequency based on motor nameplate RPM and rated frequency.

H33: Enter motor nameplate rated current.

H34: After removing the motor load, select H40 – [Control mode select] to 0 {V/F control} and run the motor at 60Hz. Enter the current displayed in Cur-[Output current] as motor no load current. If it is difficult to remove the load from the motor shaft, enter the value either 40 to 50% of the H33 – [Motor rated current] or the factory default. H42, H44: Enter the value of the parameter measured during H41 – [Auto tuning] or the factory default.

F14: This parameter accelerates the motor after pre-excitating the motor for the set time. The amount of the excitating current is set in H34- [Motor no load current].

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