Magnitude And Phase Measurements At Orders - Allen-Bradley Dynamix 2500 User Manual

This figure shows the setup for a typical set of measurement definitions with
multiple frequency bands.
Figure 16 - Magnitude with Multiple Frequency Bands Measurement Definitions
The filter specifications are shown in the table below:
Table 26 - Filter specifications for magnitude with multiple frequencies
Name
0.8-1.2 Order
1.2-3.5 Order
3.5-8.5 Order
8.5-50% Fmax
50%-100% Fmax
0.8-100% Fmax

Magnitude and Phase Measurements at Orders

the Emonitor software and the Dynamix support collecting the magnitude and
phase at orders. This topic describes the steps to set up measurement definitions
to collect magnitude and phase with the Dynamix. This table describes items that
you may need to know about collecting magnitude and phase at orders.
Item
Collecting phase
Defining order filters
Collecting magnitude and
phase at orders
(1) The filter specifications used in the tables are not currently defined in the Emonitor software database. To
define a new filter specification, choose Setup > Band Filters and click New.
Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
Low Cutoff High Cutoff
0.8 Orders 1.2 Orders
1.2 Orders 3.5 Orders
3.5 Orders 8.5 Orders
8.5 Orders 50% Max Freq
50% Max Freq 100% Max Freq
0.8 Orders 100% Max Freq
Description
• You must select Also collect phase data in the collection
specification to collect phase.
• The data collector can collect phase only at the first through eighth
orders.
You must select Analog when you define orders filters. The Dynamix
2500 data collector automatically uses its internal order filters if you
are collecting phase.
If you are collecting only magnitude values and you do not select this
option, the data collector collects a spectrum and the Emonitor
software calculates the magnitudes after unloading.
When collecting magnitude and phase at orders, the data collector
always collects a spectrum measurement, and then calculates the
magnitude and phase values from the spectrum.
Setting Up Measurements Chapter 3
Data collector filter type
None
None
None
None
None
None
(1)
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