LG C Series User Manual

Page 49

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Chapter 7. Function list

Function group 2

LED

display

Parameter

Name

Min/Max

Range

Description

Factory

defaults

Adjustable

during run

Page

H31 [Number

of

motor poles]

2/12

ƒ This setting is displayed via rPM in

drive group.

- X

H32 [Rated

slip

frequency]

0/10
[Hz]

ƒ

×

=

120

P

rpm

f

f

r

s

Where,

= Rated slip frequency

s

f

= Rated frequency

r

f

= Motor nameplate RPM

rpm

P

= Number of Motor poles

2)

Automatically

set

X

H33 [Motor

rated

current]

1.0/20
[A]

ƒ Enter motor rated current on the

nameplate.

- X

H34 [No

Load

Motor
Current]

0.1/12
[A]

ƒ Enter the current value detected

when the motor is rotating in rated rpm
after the load connected to the motor
shaft is removed.

ƒ Enter the 50% of the rated current

value when it is difficult to measure H34
- [No Load Motor Current].

- X

H36 [Motor

efficiency]

50/100
[%]

ƒ

Enter the motor efficiency (see motor

nameplate).

- X

10-6

ƒ

Select one of the following according

to motor inertia.

0

Less than 10 times that of
motor inertia

1

About 10 times that of motor
inertia

H37 [Load

inertia

rate]

0/2

2

More than 10 times that of
motor inertia

0 X

10-6

H39 [Carrier

frequency
select]

1/15
[kHz]

ƒ

This parameter affects the audible

sound of the motor, noise emission from
the inverter, inverter temp, and leakage
current. If the value is set higher, the
inverter sound is quieter but the noise
from the inverter and leakage current will
become greater.

3 O

10-

16

0 {Volts/frequency

Control}

9-15

1

{Slip compensation control}

10-6

2

{PID Feedback control}

10-8

H40 [Control

mode select]

0/3

3

{Sensorless vector control}

0 X

10-11

H41 [Auto

tuning]

0/1

ƒ

If this parameter is set to 1, it

automatically measures parameters of
the H42 and H43.

0 X

H42 [Stator

resistance
(Rs)]

0/5.0[

Ω]

ƒ

This is the value of the motor stator

resistance.

- X

H44 [Leakage

inductance
(L

σ)]

0/300.0
[mH]

ƒ

This is leakage inductance of the

stator and rotor of the motor.

- X

10-

10

H45
1)

Sensorless P
gain

ƒ

P gain for Sensorless control

1000

O

H46 Sensorless

I

gain

0/32767

ƒ

I gain for Sensorless control

100

O

0

Terminal I input (0 ~ 20 mA)

H50

[PID
Feedback
select]

0/1

1

Terminal V1 input (0 ~ 10 V)

0 X

10-8

1): Set H40 to 2 (PID control) or 3(Sensorless vector control) to display these parameters.


49

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