Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 120)

120 Rockwell Automation Publication 7000-IN012B-EN-P - June 2014
Chapter 4 Commissioning the Drive
Sample Waveforms
Synchronous Transfer Test to verify Sync Lead Angle (50Hz System); Ch1: Idc1
(yellow), Ch2: Vuv (blue), Ch3: Vuvs (red)
Figure 88 - Sample waveform: Synchronous transfer test
Live Synchronous Transfer
While performing a live synchronous transfer:
1. Capture motor voltage at ACB test point “Vuv” & bypass voltage at ACB
test point “Vuvs”.
2. Capture and trigger on falling edge of the DC Link current waveform at
ACB test point “Idc1”.
3. Label the waveforms as “Vuv”, “Vuvs” and “Idc1”.
4. Save the worksheet as “Synch on Motor 01”, for example.
Table 10 - Oscilloscope Settings
Oscilloscope Time Base Wave Form Test-Point Waveform
Label
Chan. 1 10ms/div. DC Link Current Idc1 Idc1
Chan. 2 Motor Voltage Vuv Vuv
Chan. 3 Bypass Line
Voltage Vuvs Vuvs