82 Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
Chapter 3 Setting Up Measurements
2. Also, check the Order Normalization checkbox to signify Orders Track to
the Dynamix 2500 data collector.
3. Create a Spectrum measurement definition that uses the Orders Based
collection specification.
4. Tag that measurement and load it to the Dynamix 2500 data collector with
a list.
For Orders Track data collection, you are required to use a trigger to continually
determine machine speed.
Orders tracking analysis can be used effectively to diagnose the vibrations of
variable speed machines. The orders tracking yields data in the revolution
domain, not the time domain. In an orders spectrum, signals that are periodic in
the revolution domain appear as peaks and orders or harmonic components
remain fixed in their position through speed changes. This is a clear advantage
when comparing the characteristics of variable speed machines over a period of
time.
Using Frequency Items for the Diagnostic Frequency Cursor
Using the Dynamix 2500 data collector, you set up frequency items in the
Emonitor software and download them to the Dynamix 2500 data collector.
Then, you can review the data using the Diagnostic Frequencies cursor. This
feature lets you to diagnose the peaks you see in the Dynamix 2500 data collector
using the frequency items from the host software.
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