FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

4PARAMETERSLimit the output frequency4.9.2 Avoid mechanical resonance points (Frequency jump) (Pr. 31 to Pr. 36)When it is desired to avoid resonance attributable to the natural frequency of a mechanical system, theseparameters allow resonant frequencies to be jumped.ParameterNumberName Initial Value Setting Range Description31 Frequency jump 1A 9999 0 to 400Hz, 999932 Frequency jump 1B 9999 0 to 400Hz, 999933 Frequency jump 2A 9999 0 to 400Hz, 999934 Frequency jump 2B 9999 0 to 400Hz, 999935 Frequency jump 3A 9999 0 to 400Hz, 999936 Frequency jump 3B 9999 0 to 400Hz, 99991A to 1B, 2A to 2B, 3A to 3B isfrequency jumps9999: Function invalidSet frequency (Hz)Pr.36Pr.35Pr.34Pr.33Pr.32Pr.31Frequency jump⋅⋅Up to three areas may be set, with the jump frequencies setto 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 jumpareas.Pr.34:35HzPr.33:30HzExample 1 To fix the frequency to 30Hz in the range 30Hz to 35Hz, set 35Hz in Pr. 34and 30Hz in Pr. 33.Pr.33:35HzPr.34:30HzExample 2To jump the frequency to 35Hz in the range 30Hz to 35Hz, set 35Hz in Pr.33 and 30Hz in Pr. 34.⋅CAUTIONDuring acceleration/deceleration, the running frequency within the set area is valid.141