Adjusting Frequency References
6-23
Jump Frequency Function (Operation Avoiding Resonance)
• This function allows the prohibition or “jumping” of certain frequencies within the Inverter’s output fre-
quency range so that the motor can operate without resonant oscillations caused by some machine systems.
• It can also be used for deadband control.
Related Parameters
The relationship between the output frequency and the jump frequency reference is as follows:
Fig 6.26 Jump Frequency
Setting Precautions
• Set the jump frequencies according to the following formula: d3-01 ≥ d3-02 ≥ d3-03.
• When parameters d3-01 to d3-03 are set to 0 Hz, the jump frequency function is disabled.
Parameter
Number
Name
Setting
Range
Factory
Setting
Change
during
Operation
Access
Level
d3-01 Jump frequency 1
0.0 to
200.0
0.0 Hz No A
d3-02 Jump frequency 2 0.0 Hz No A
d3-03 Jump frequency 3 0.0 Hz No A
d3-04 Jump frequency width
0.0 to
20.0
1.0 Hz No A
Output frequency
Frequency reference descending
Jump frequency
width d3-04
Jump frequency reference
Frequency reference ascending
Jump frequency
width d3-04
Jump frequency
width d3-04
Jump
frequency 3
(d3-03)
Jump
frequency 2
(d3-02)
Jump
frequency 1
(d3-01)
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