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.
Figure4.4.104Wobbleoperationandtherelatedparametersetting
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
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