Rockwell-automation 1441-DYN25-Z Dynamix 2500 Data Collector Manual de usuario descargar pdf (Pagina 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.

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Rockwell-automation 1441-DYN25-Z Dynamix 2500 Data Collector Manual de usuario Pagina 89