6. Description of Parameters
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6.11.2 Jump Frequency, FWD/REV Switchover Dead-zone Time, Reverse Run Prohibited
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Jump Frequency
The frequency jump function enables the AC drive to avoid mechanical resonance point
of load. The drive can be set with two separate frequencies. If both are set to 0, the
frequency jump function is disabled.
Figure 6-60 Jump frequency
Output frequency (Hz)
Time (t)
Frequency jump band
Frequency jump band
Frequency jump band
Frequency jump band
Jump frequency 2
Jump frequency 1
In the preceding gure, when running frequency accelerates to the value that is close to
jump frequency during acceleration, the AC drive runs for a period at current frequency
reference and then jumps over jump frequency. The jump width is twice of F8-11.
When running frequency decelerates to the value close jump frequency during
deceleration, the AC drive runs for a period at current frequency reference and then
jumps over jump frequency. The jump width is twice of F8-11.
Function Code Parameter Name Setting Range Default
F8-09
Frequency jump 1 0.00 Hz to max. frequency 0.00 Hz
F8-10
Frequency jump 2 0.00 Hz to max. frequency 0.00 Hz
F8-11
Frequency jump band 0.00 Hz to max. frequency 0.00 Hz
F8-22
Jump frequency function 0: Disabled
1: Enabled
0
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