Yaskawa V1000 Traverse Application Custom User Manual
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3 New and Modified Software Functions
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YASKAWA AMERICA, INC. TM.V1000SW.029 Traverse Application V1000 Custom Software Supplement
Situation 3: Changing Reference Frequency
Using the settings in
and a reference frequency that changes from 20 Hz to 30 Hz,
the Traverse software produces output waveforms similar to those in
. Using a
20 Hz frequency reference, the master drive oscillates between 16 and 24 Hz. When the
reference frequency increases to 30 Hz, the drive exits Traverse mode and accelerates using
the default acceleration time set in C1-01. When the drive reaches the new frequency
reference, it re-enters Traverse mode and the master drive oscillates between 24 and 36 Hz.
Initially, U7-02, Slave Absolute Frequency, rests at 21.33 Hz. When the drive enters
Traverse mode, U7-02 oscillates between 16 and 24 Hz. When the reference frequency
changes, the drive exits Traverse mode and the Slave Absolute Frequency rises to 32 Hz
until the drive re-enters Traverse mode. Once resuming traverse mode, the new waveform
oscillates between 24 and 36 Hz.
U7-03, Slave Ripple Frequency, operates similar to U7-02, except that its waveform is
centered around [50% × E1-04], which does not change with the reference frequency.
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.