Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 113)

Rockwell Automation Publication 7000-IN012B-EN-P - June 2014 113
Commissioning the Drive Chapter 4
Table 4 - Oscilloscope Settings
Use the same settings on the oscilloscope when capturing waveforms for the two
Slave bridges. If you are using a 2-channel oscilloscope, then first capture two
waveforms and move them onto a wavestar worksheet and after that capture the
remaining waveforms and move them onto the same wavestar worksheet.
Sample Waveforms
Sample Waveforms captured on ACB test points showing incoming line voltage
phasing [Ch1: V2uv (red), Ch2: V2vw (yellow), Ch3: V2wu (blue)]
Figure 80 - Sample waveforms: incoming line voltage phasing
Sample waveforms captured on ACB test points showing 20 deg Phase Shift
between Master and two Slave Bridges [Ch1-Master: V2uv (red), Ch2-Slave 1:
V3uv (yellow), Ch3-Slave 2: V4uv (blue)]:
Oscilloscope Time Base Wave Form Test-Point Waveform
Label Sheet Name
Chan. 1 5 ms/div. 2U Line Voltage V2uv V2uv Input phasing
Chan. 2 2V Line Voltage V2vw V2vw
Chan. 3 2W Line Voltage V2wu V2wu