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Jump Frequencies – Some motors or machines exhibit resonances at particular speed(s), which can be destructive for prolonged running at those speeds. The inverter has up to three jump frequencies as shown in the graph. The hysteresis around the jump frequencies causes the inverter output to skip around the sensitive frequency values.

Output

 

 

frequency

 

A068

A067

 

 

A068

 

 

A065

 

A066

 

A066

 

 

A063

A064

 

 

Frequency

 

A064

 

command

 

 

 

 

“A” Function

Run

Defaults

Func.

 

Name /

Description

Mode -FE -FU

Units

Code

SRW Display

Edit (EU)

 

(USA)

A063,

Jump (center) frequency

Up to 3 output frequencies can be

 

0.0

 

0.0

Hz

A065,

setting

 

defined for the output to jump

 

0.0

 

0.0

 

A067

JUMP F1

0000.0Hz

past to avoid motor resonances

 

0.0

 

0.0

 

 

JUMP F2

0000.0Hz

(center frequency)

 

 

 

 

 

 

JUMP F3

0000.0Hz

Range is 0.0 to 400.0 Hz

 

 

 

 

 

A064,

Jump (hysteresis) frequency

Defines the distance from the

 

0.5

 

0.5

Hz

A066,

width setting

center frequency at which the

 

0.5

 

0.5

 

A068

JUMP W1

0000.5Hz

jump around occurs

 

0.5

 

0.5

 

 

JUMP W2

0000.5Hz

Range is 0.0 to 10.0 Hz

 

 

 

 

 

 

JUMP W3

0000.5Hz

 

 

 

 

 

 

Configuring Drive Parameters

Page 95
Image 95
Hitachi X200 Series instruction manual Jump F1, Jump F2, Jump F3, Jump W1, Jump W2, Jump W3