Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 286)

286 Rockwell Automation Publication 750-RM002B-EN-P - September 2013
Chapter 5 Drive Features
6. Select the parameter that you want to log by selecting the Port, and then
scroll through the parameter lists, file folders, diagnostic items or use the
find function and click Apply.
The best way to remove a parameter selection is to uncheck the check box in the
Use column.
“Not used” is downloaded instead of the selected parameter. The next time you
launch the wizard, that buffer has no parameter set.
In the example below, the trend buffers are configured with five drive parameters
consisting of Output Frequency, Motor Velocity Feedback, DC Bus Voltage,
Output Current, Output Voltage parameter values. The trend is configured for a
total of 4096 samples that include 500 samples before the trigger, at a sample rate
of 1.024 ms. The trigger of the high speed trend is the Motor Velocity Feedback
greater than zero.
This means the following:
• The drive starts trending.
• When the motor starts rotating forward, the trend starts wrapping up.
• The drive continues trending for about 3.7 seconds to use up the
remaining 3596 samples.