Chapter 5 Function parameter
91
frequency, the inverter will start after (F7.47) delay time.
If you want to use the function of PID start deviation, PID stop computing status must be
set to active (E2.27 = 1).
5-2-15.E0 group Wobbulate, fixed-length and counting
Wobbulate function is suitable for the textile, chemical, and other industries, as well as
occasions that needs traverse and winding function. Wobbulate function means that the inverter
output frequency swings up and down to set the frequency centering around the set frequency, the
locus the operating frequency on the timeline is as shown in figure, which the swing amplitude is
set by E0.00 and E0.01, when E0.01 is set to 0, the wobbulate will not work.
Output frequency(Hz)
Wobbulate upper limit frequency
Center frequency(Fset)
Wobbulate lower limit frequency
Wobbulate range
Aw = Fset*E0.01
Textile jump frequency
= Aw*E0.02
Wobbulate
cycle
Triangle
wave rise
time
Decelerate at the
deceleration time
Accelerate at the
acceleration time
Running command
Time t
+Aw
-Aw
Figure 5-28:Schematic diagram of wobbulate operating
Relative to center frequency
Relative to maximum frequency
This parameter is used to determine the baseline of the swing
0: Relative to center frequency(F0.07 frequency source)
For the variable swing system. The swing varies with the change of center frequency (the
set frequency).
1: Relative to maximum frequency(F0.19)
For the fixed swing system, the swing is fixed
Sudden jump frequency range
The parameter is used to determine the value of swing and the value of sudden jump
frequency.
When the swing is set to Relative To Center frequency(E0.00=0), Swing (AW) =
frequency source (F0.07) × swing amplitude((E0.01). When the swing is set to Relative To
Maximum Frequency(E0.00=1), Swing (AW) = maximum frequency (F0.19) × swing
amplitude((E0.01).
If the sudden jump frequency range is selected for wobbulate operation, the frequency
percentage of sudden jump frequency range relative to swing, i.e.: Sudden jump frequency =
Swing(AW)×Sudden jump frequency range(E0.02). When the swing is set to Relative To Center
frequency(E0.00=0), the sudden jump frequency is the variable value. When the swing is set to
Relative To Middle Frequency(E0.00=1), the sudden jump frequency is the fixed value.
The frequency of wobbulate operation is restricted by the upper and lower frequencies.