Avoid Mechanical Resonance Points (Frequency Jumps) - Mitsubishi Electric FR-E700 Instruction Manual
Frequency inverter
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Limit the output frequency
6.4.2
Avoid mechanical resonance points (frequency jumps) (Pr. 31 to Pr. 36)
When it is desired to avoid resonance attributable to the natural frequency of a mechanical sys-
tem, these parameters allow resonant frequencies to be jumped.
Pr.
Name
No.
31
Frequency jump 1A
32
Frequency jump 1B
33
Frequency jump 2A
34
Frequency jump 2B
35
Frequency jump 3A
36
Frequency jump 3B
The above parameters can be set when Pr. 160 "User group read selection" = 0.
Up to three areas may be set, with the jump frequencies set to either the top or bottom point of
each area.
The settings of frequency jumps 1A, 2A, 3A are jump points, and operation is performed at these
frequencies in the jump areas.
Hz
6 - 52
Initial Value
Setting Range
9999
0–400Hz/9999
9999
0–400Hz/9999
9999
0–400Hz/9999
9999
0–400Hz/9999
9999
0–400Hz/9999
9999
0–400Hz/9999
Set frequency
Description
1A to 1B, 2A to 2B, 3A to 3B is
frequency jumps
9999: Function invalid
Fig. 6-11:
Definition of the jump areas
Pr.36 (3B)
Pr.35 (3A)
Pr.34 (2B)
Pr.33 (2A)
Pr.32 (1B)
Pr.31 (1A)
Parameter
Refer to
Parameters referred to
Section
—
I000019C
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