Yaskawa AC Drive-A1000 - Manual (Page 14)

3 Application Selection
14 YASKAWA TM.A1000SW.029 Traverse Application A1000 Custom Software Supplement
Situation 2: Traverse Operation Exceeds Maximum Output Frequency
Using the same parameter settings in Table 10 and a reference frequency of 52 Hz, the Traverse software will
produce output waveforms similar to the ones in Figure 3 . The Traverse software, with an amplitude of
10.4 Hz, will produce a triangle output that varies from 41.6 to 62.4 Hz. Setting the drive parameter E1-04 to
60.0 Hz caps the triangle waveform when the traverse frequency exceeds the Maximum Output Frequency of
60 Hz.
Figure 3
Figure 3 Traverse Mode Operation Outside of Max Output Frequency Parameter E1-04 / E3-04
Situation 3: Changing Reference Frequency
Using the parameter settings found in Table 10 and a reference frequency that changes from 20 Hz to 30 Hz, the Traverse
software will produce output waveforms similar to those in Figure 4 . Using the 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 parameter 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 remains centered at 0 Hz.
Step changes in frequency reference will result in unintended jumps in the disturbed waveforms. Disable the Transverse
function using the 80h, (Disturbed WF Off), to prevent damage to the motor or connected equipment before making large
changes in the frequency reference.
Run
Command
Frequency
Reference
Disturb UP Status
Multi-function output
Multi-function output
During Disturbed
Speed Agree
0 Hz
0 Hz
E1-04
Maximum
Frequency
Slave Base
Frequency
Slave Base
Frequency
Slave Absolute
Frequency
U7-02
U7-04
U7-03
E1-04