LG C Series User Manual

Page 106

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Chapter 11. Monitoring



I56: When 17 {Fault display} is selected in I54 and I55, Multi-function output terminal

and relay will be activated with the value set in I56.

0: FDT-1



Check whether the output frequency of the inverter matches the user-setting frequency.



Active condition: Absolute value (preset frequency - output frequency) <= Frequency

Detection Bandwidth/2

Group

LED

Display

Parameter Name

Set

value

Min/Max

range

Factory

default

Unit

I/O group

I53

[Frequency Detection
Bandwidth]

-

0/400 10.0

Hz


ƒ Cannot be set above Max frequency (F21).

15Hz

Freq.

setting

Freq.

MO

20Hz

40Hz

20Hz

40Hz

35Hz

Run

command



When setting I53 to 10.0

1: FDT-2



It activates when the preset frequency matches frequency detection level (I52) and

FDT-1 condition is met.



Active condition: (Preset frequency = FDT level) & FDT-1

Group

LED

Display

Parameter Name

Set

value

Min/Max

range

Factory

default

Unit

I52

[Frequency Detection
Level]

-

30.0

I/O group

I53

[Frequency detection
bandwidth]

-

0/400

10.0

Hz


ƒ It cannot be set above F21- [Max frequency].



When setting I52 and I53 to 30.0 Hz and 10.0 Hz, respectively

25Hz

Freq.

setting

Freq.

MO

30Hz

50Hz

Run

command

106

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