Yaskawa AC Drive-A1000 - Manual (Page 11)

3 Application Selection
YASKAWA TM.A1000SW.029 Traverse Application A1000 Custom Software Supplement 11
„ Function Description
Machine Parameter Selection
The disturbed waveform begins once the drive reaches Speed Agree. The disturbed waveform rides on top of the base
frequency reference for the traverse drive. The output will be the frequency reference waveform summed with the
disturbed waveform if the frequency reference of the master drive is adjusted while the disturbed waveform is active.
The dithering is a triangle waveform with amplitude and slope set by P1-02, P1-04, and P1-05 parameters. The traverse
drive also has a jump in the dithering wave form which is set by parameter P1-03.
The anti-phase output signal is the disturbed portion of the traverse frequency reference signal inverted. Only the triangle
portion of the disturbed waveform is used for the anti-phase. The jump is ignored.
The Traverse application software has three monitors:
• Base Slave Frequency (U7-04)
U7-04, Base Slave Frequency, outputs the frequency reference of the master (traverse) before the disturbed waveform
is applied.
• Ripple Slave Frequency (U7-03)
U7-03, Ripple Slave Frequency, outputs the anti-phase of the disturbed portion of the waveform.
• Absolute Slave Frequency (U7-02)
U7-02, Absolute Slave Frequency, outputs the anti-phase of the disturbed portion of the waveform summed with U7-04.
To compensate for system delays, U7-02, U7-03, and U7-04 monitors can be set to lead or lag the traverse control output
by up to 24 scans (24 ms), set by P1-06.
All three monitors can be set to analog outputs. U7-02 or U7-03 would generally be used as an analog output going to the
slave (spindle) for its frequency reference. U7-02 provides the slave a complete reference signal. U7-03 is used as a dither
reference if the slave is to use its own base frequency reference as shown in
Figure 1 .