gefran VDI100 Series

19 - Wobble Frequency Parameters
Code Parameter Name / Range
19-00 Center frequency of wobble frequency
5.00~100.00%
19-01 Amplitude of wobble frequency
0.1~20.0%
19-03 Jump time of wobble frequency
0~50 msec
19-04 Wobble frequency cycle time
0.0~1000.0 s
19-05 Wobble frequency ratio
0.1~10.0 msec
19-06 Upper offset amplitude of wobble frequency
0.0~20.0 %
19-07 Lower offset amplitude of wobble frequency
0.0~20.0 %
Wobble operation can be used in V/f and V/f+PG control mode to modulate the output frequency around the
reference frequency for use in winding application to create an evenly wound roll.
Refer to the gure 4.4.104 for the wobble operation and the related parameter settings.
Figure4.4.104Wobbleoperationandtherelatedparametersetting
Output
frequency
Center
Frequency
19-00
t
up t down
Wobble time
19-04
Jump time
19-03
19-07
19-01
19-01
19-02
19-06
19-01
* Wobble Ratio =
t
up / t down
19-01
19-01
t
19-02
Jump
frequency
In wobble operation, one of multifunction digital inputs (03-00 to 03-07) is set to 37 (wobble operation) and the
run command is active. When the wobble operation is ready, the inverter output frequency reaches the center
frequency (19-00). The acceleration time to the center frequency is the original pre-set acceleration time (Tacc
1 to Tacc 4). When the wobble operation is closed or the run command is removed, the deceleration time used
is the original pre-set deceleration time (Tdec 1 to Tdec4).
In wobble operation, the inverter operates uses the in the wobble time (19-04, tup + tdown) and wobble fre-
quency (19-05, tup / tdown).
Set multi-function digital output terminals (R1A-R1C, R2A-R2C) to output wobble operation (in acceleration) by
setting from 03-11 to 03-12 to 20 or 21.
Refer to the gure 4.4.105 for the wobble ON / OFF control.
260 VDI100 • Instruction manual