Yaskawa V1000 Traverse Application Custom - Manual (Page 9)

YASKAWA AMERICA, INC. TM.V1000SW.029 Traverse Application V1000 Custom Software Supplement 9
3 New and Modified Software Functions
3 New and Modified Software Functions
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Traverse Anti-Phase
■ Overview
The Traverse Anti-Phase function controls the traverse arm of a winder in textile industry
applications. This function generates a dithered disturbed waveform that is used as
frequency reference for the traverse arm drive and also provides an anti-phase signal for
output to a spindle slave drive for better winding.
■ Basic Concept
When the drive reaches the set frequency reference, the output frequency waveform is
modulated in a triangular pattern to randomize fiber overlap on the spindle and produce a
tighter wrap and higher quality wound package.
P1-†† parameters set the attributes of the disturbed waveform, a triangle wave with
instantaneous jumps at the peak and trough. This triangle wave rides on top of the base
frequency reference for the traverse drive.
The signal output to control the slave spindle drive can be set to one of three monitors:
U7-02, Absolute Slave Frequency, U7-03, Ripple Slave Frequency, or U7-04, Slave Base
Frequency. U7-02 and U7-03 have an anti-phase component and output a disturbed
waveform that is the inverse (anti-phase) of the master disturbed waveform. The anti-phase
waveform ignores the jump portion of the master traverse disturbed waveform.
■ Limitations
• This software substitutes English text for Japanese when Japanese is selected (A1-00 = 1).
Chinese language support (A1-00 = 7) has been removed.
• Parameter L4-02, Speed Agree Detection Width, should be set to a small, non-zero value
to avoid unintended jumps in the disturbed waveforms.
• When P1-04 and P1-05 are set to short slope times, set L4-02 to a value greater than
0.5 Hz to prevent inconsistent traverse operation.
• Step changes in frequency reference result in unintended jumps in the disturbed
waveforms. Disable the Traverse function using H1-†† = 80h to prevent damage to the
motor or connected equipment before making large changes in the frequency reference.
• The Traverse waveform can be configured to be smaller than the input resolution of the
V1000 slave drive frequency reference. Ensure that Master Frequency Reference × P1-02
is significantly larger than (Slave Maximum Output Frequency/1000) for proper control
of the slave drive.