Chapter 5: Detailed description of parameters
176
Group PB: Variable frequency, fixed length and count
The swing frequency function is applied to the textile and chemical fibre industry and to
applications where winding functions are needed. The swing frequency function indicates
that the inverter output frequency changes up and down around the set midrange
frequency. The frequency course on the timeline is shown in the following figure.
The swing frequency amplitude is set in Pb.00 and PB.01. When Pb.01 is set to 0, the swing
frequency amplitude is 0 and the swing frequency function is not used.
Figure 4-26: Frequency swing control
This parameter serves to select the base value of the swing amplitude.
0: With regard to medium frequency (P0.03 frequency source selection) it is a variable
swing value. The amplitude varies according to the medium frequency (set frequency).
1: With regard to the maximum frequency (maximum output frequency P0.12) it's a fixed
swing value. The amplitude does not change.