LG Electronics SV-iC5 Series manual Protective functions, output

12. Protective functions

Overload trip

Group	LED Display	Parameter Name		Set		Min/Max		Factory		Unit
				value		setting		default
Function	F56	[Overload trip select]		1	0/1		0
group 1
	F57	[Overload trip level]	-		30/200		180		%
	F58	[Overload trip time]	-		0/60		60			sec

Set F56 to 1.

Inverter output is turned off when motor is overloaded.

Inverter output is turned off when excessive current flows to the motor for F58 – [Overload trip time].

12.3 Stall prevention

Group	LED Display	Parameter Name			Set		Min/Max		Factory		Unit
					value		setting		default
Function	F59	[Stall prevention select]			-	0/7		3
group 1
	F60	[Stall prevention level]			-	30/150		150		%
I/O group	I54	[Multi-function	output	7		0/17		12
		terminal select]
	I55	[Multi-function relay select]		7				17

During acceleration : Motor acceleration is stopped when current exceeding the value set in F60 flows.

During constant run : Motor decelerates when current exceeding the value set in F60 flows.

During deceleration : Motor deceleration is stopped when inverter DC link voltage rises above a certain voltage level.

F60 : The value is set as the percent of motor rated current (H33).

I54, I55: Inverter outputs signals through multi-function output terminal (MO) or relay output (30AC) when stall prevention function is activated. Stall prevention operation can be monitored by external sequence.

F59 : Stall prevention can be set as the table below.

F59	[Stall prevention	Setting	During	During constant	During
	select]		Deceleration	speed	Acceleration
			Bit 2	Bit 1	Bit 0
		0	-	-	-
		1	-	-
		2	-		-
		3	-
		4		-	-
		5		-
		6			-
		7

12-3 SV-iC5