Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector - Manual (Page 89)

Rockwell Automation Publication 1441-UM001B-EN-P - September 2012 89
Setting Up Measurements Chapter 3
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
(1)
The filter specifications are shown in the table below:
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.
(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.
Table 26 - Filter specifications for magnitude with multiple frequencies
Name Low Cutoff High Cutoff Data collector filter type
0.8-1.2 Order 0.8 Orders 1.2 Orders None
1.2-3.5 Order 1.2 Orders 3.5 Orders None
3.5-8.5 Order 3.5 Orders 8.5 Orders None
8.5-50% Fmax 8.5 Orders 50% Max Freq None
50%-100% Fmax 50% Max Freq 100% Max Freq None
0.8-100% Fmax 0.8 Orders 100% Max Freq None
Item Description
Collecting phase • 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.
Defining order filters 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.
Collecting magnitude and
phase at orders 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.