Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector - Manual (Page 98)

98 Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
Chapter 3 Setting Up Measurements
The following table shows the collection specifications (in the same order as the
measurement definition table above).
The following table shows the transducer specification in the collection
specifications.
Time Waveform Measurement Definitions
The Emonitor software and the Dynamic 2500 data collector support time
waveform measurement definitions. This topic lists the unique characteristics of
the Dynamix that you may need to know when setting up and collecting time
waveform data.
The Dynamix 2500 data collector cannot collect phase with time waveform
measurement definitions. You can choose to have the instrument collect a time
waveform only if a magnitude measurement at the same location is in alarm.
The Dynamic 2500 data collector supports integrated time waveform
measurements (single integration). This means you can collect a time waveform
with velocity units using an accelerometer or displacement units using a velocity
transducer.
The length of the time waveform depends on the maximum frequency you select
in the collection specification. You can calculate the number of time samples from
the number of spectral lines (Collection Specification dialog box) using this
formula.
You can calculate the total time required to collect a time waveform measurement
from the Number of lines value and the Maximum frequency value in the
Collection Specification dialog box (Setup > Collection Specification).
Table 32 - Collection specifications for spectrum measurement definitions
Transducer Window Signal Detection Fmax Lines Phase Order Norm? Averages
Accelerometer Hanning Peak 2 kHz 400 No No 4 linear
Accelerometer Hanning Peak 10 orders 400 No Yes 4 linear
Accelerometer Hanning Peak 2 kHz 400 No No 4 time synch.
Table 33 - Transducer specification in spectrum collection specifications
Name Base Unit Input Type Units Calibration Value DC Offset
Accelerometer Acceleration ICP Accel g’s 100 0
TIP Set the Collect and store condition in the Edit Storage Specification
dialog box to On Magnitude Alarm for the storage specification for the
time waveform measurement definition.
time samples spectral lines 2.56  =