Chapter 9. Basic functions

zSkip frequency

 

Group

 

 

LED display

 

 

Parameter name

 

 

Set

 

 

 

Min/Max

 

 

Factory

 

 

Unit

 

 

 

 

 

 

 

 

value

 

 

 

range

 

 

defaults

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Function

 

H10

 

 

[Skip frequency select]

 

 

1

 

0/1

 

0

 

 

 

 

group 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H11

[Skip frequency low limit 1]

-

 

0/400

 

10.0

 

 

Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

~

 

~

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H16

 

[Skip frequency high limit

-

 

0/400

 

35.0

 

 

Hz

 

 

 

 

3]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ƒSet H10 to 1.

ƒRun frequency setting is not available within the skip frequency range of H11-H16.

ƒSkip frequency is settable within the range of F21 – [Max frequency] and F23 – [Start frequency].

Freq.

 

H16

 

H15

 

H14

 

H13

 

H12

 

H11

10V V1(Voltage input)

0

20mA I (Current input)

Run

 

command

 

Freq. Up setting

Freq. Down setting

When it is desired to avoid resonance attributable to the natural frequency of a mechanical system, these parameters allow resonant frequencies to be skipped. Three different areas of [Skip frequency High/Low limit] can be set with the skip frequencies set to either the top or bottom point of each area. However, during acceleration or deceleration, the run frequency within the set area is valid.

In the case of increasing frequency setting as shown above, if frequency set value (Analog setting via voltage, current or digital setting via keypad) is within the range of Skip frequency, it maintains Skip frequency low limit value. If the set value is outside the range, it increases the frequency.

In the case of decreasing frequency setting, if frequency set value (Analog setting via voltage, current or Digital setting via keypad) is within the range of Skip frequency, it maintains Skip frequency high limit value. If the set value is outside the range, it decreases the frequency.

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LG Electronics C Series manual H10 Skip frequency select