(H) Protective function parameter
Avoiding the mechanical resonance points (frequency jump)
When it is desired to avoid resonance attributable to the natural frequency of a mechanical system,
these parameters allow resonant frequencies to be jumped.
3-point frequency jump (Pr. 31 to Pr. 36)
● Up to three areas may be set, with the jump frequencies set to either the top or bottom point of
● The settings of frequency jumps 1A, 2A, 3A are jump points, and operation is performed at these
frequencies in the jump areas.
To fix the frequency to 30 Hz in the range of 30 Hz to 35 Hz, set 35 Hz in Pr. 34 and 30 Hz in Pr. 33.
Pr. 34: 35 Hz
Pr. 33: 30 Hz
To jump the frequency to 35 Hz in the range of 30 Hz to 35 Hz, set 35 Hz in Pr. 33 and 30 Hz in Pr. 34.
Pr. 33: 35 Hz
Pr. 34: 30 Hz
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Frequency jump 1A
Frequency jump 1B
Frequency jump 2A
Frequency jump 2B
Frequency jump 3A
Frequency jump 3B
Frequency jump range
Input set frequency (Hz)
1A to 1B, 2A to 2B, 3A to 3B are frequency jumps.
0 to 590 Hz,
9999: Function disabled
Set the jump range for the frequency jumps (6-point
0 to3 (0 Hz)
Definition of the jump areas