Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 118)

118 Rockwell Automation Publication 7000-IN012B-EN-P - June 2014
Chapter 4 Commissioning the Drive
Sample waveforms recorded on 18 Pulse Drive running at 75% load (Ch1: Line
Voltage, Ch2 - Line Current, Ch3 - Motor Voltage, Ch4 - Motor Current)
Figure 86 - Sample waveform: 18 Pulse drive at 75% load capacity
Synchronous Transfer When commissioning a drive employing synchronous transfer, capture and
submit the following waveforms with the commissioning package.
While measuring the bypass (BP) contactor closing time:
• Capture 120V bypass close command from the BP Contactor Close
output ( J1-12) at the ACB (refer to electrical drawing for specific wire/
terminal number).
• Capture the 9V signal across the bypass contactor vacuum bottles (refer to
the tech note PF7000_GEN-78 for details).
• Label the waveforms as “BP_Close_Cmd” and “Actual_Closure”.
• Save the worksheet as “Bypass Contactor Close Delay”.
Table 8 - Oscilloscope Settings
Oscilloscope Time Base Wave Form Test-Point Waveform Label
Chan. 1 25ms/div. BP Contactor Close
Command BP Contactor Close
Command BP_Close_Cmd
Chan. 2 Actual Closure of BP Across 2K-Ohm resistor
connected in series with 9V
battery Actual_Closure