LG Electronics C Series manual Inverter Overload, Frequency command loss

Chapter 12. Protective functions

12.6 Inverter Overload

Inverter overload prevention function is activated when the current above inverter rated current flows.

Multi-function output terminal (MO) or Multi-function relay (30AC) is used as the alarm signal output during inverter overload trip.

Group

I/O group

LED	Parameter Name	Set
display		value
I54	[Multi-function output	7
	terminal select]
I55	[Multi-function relay	7
	select]

Min/Max Range

0/17

Factory	Unit
default
12
17

12.7 Frequency command loss

Group

I/O group

LED	Parameter Name		Set
display			value
I16	[Criteria for analog		0
	input signal loss]
I62	[Drive mode select after		-
	loss of frequency
	command]
I63	[Wait time after loss of		-
	frequency command]
I54	[Multi-function output	11
	terminal select]
I55	[Multi-function relay	11
	select]

Min/Max setting

0/2

0/2

1/12

0/17

	Factory	Unit
	default
0
0

1.0Sec

12

17

ƒSelect the Drive mode when frequency reference set via V1 and I or (V1+I) input terminal or communication option is lost.

I16: This is to set the criteria for analog input signal loss when frequency reference is given by V1, I, V 1+I or Communication option.

I16

[Criteria for analog input signal loss]

0

1

2

Disabled (Does not check the analog input signal loss)

When less than the value set in I 2, I 7, I 12 is entered

When below the value set in I 2, I 7, I 12 is entered

EX 1) The inverter determines that the freq reference is lost when DRV- Frq is set to 3 (Analog V1 input), I 16 to 1 and analog input signal is less than half of the minimum value set in I 7.

EX 2) The inverter determines that the freq reference is lost when DRV- Frq is set to 6 (V1+I), I 16 to 2 and V1 input signal is either below the minimum value set in I 7 or I input value is less than the I 12 value.

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