Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control - Manual (Page 82)

82 Rockwell Automation Publication 7000-IN012B-EN-P - June 2014
Chapter 4 Commissioning the Drive
There are low resistances between phases through a transformer winding and a
high resistance between transformer windings. Therefore, the expected resistance
measurements are listed in the table below:
If the measurement results are not as described above, the inter-wiring between
the isolation transformer and drive needs to be re-inspected.
Application of Medium Voltage
Before running the drive with medium voltage, configure the diagnostic trending
to capture information in case of fault during commissioning.
The diagnostic trending operation of the drive allows you to capture the
relationships of 16 parameters over a period of time. Trending is a valuable tool
for troubleshooting the drive.
Diagnostics
The PowerFlex 7000 drive captures parameters on a real-time basis for later
analysis.
The Diagnostics screen ( Figure 64 ) consists of sub menus used to:
• Configure the diagnostic setup;
• Provide operation status of the data collection;
• View collected data in tabular format;
• Plot collected data.
Diagnostics Setup
To change a parameter:
1. Click the Diagnostics tab, and click the Setup tab in the sub menu to view
the 16 parameters (traces) as shown in
Figure 64 .
Terminal Measurement Points Expected Resistance
2U -> 2V -> 2W Approximately 0 Ω
3U -> 3V -> 3W Approximately 0 Ω
4U -> 4V -> 4W Approximately 0 Ω
#U -> #V -> #W Approximately
∞ Ω
ATTENTION: Reset the trending before leaving the drive in production.