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Chapter 3
Setting Up Measurements
70
ESP Filters
Use an Envelope Spectrum Processing (ESP) filter to detect bearing and other
component defects. The ESP filters apply a band pass filter, envelope the time
domain signal, and then perform a frequency analysis on the result. ESP filters are
built into the Dynamix 2500 data collector, and you cannot change them in the
Emonitor software. You can use ESP filters with the magnitude and spectrum
measurement definitions.
The following ESP filters are available with the Emonitor software and the
Dynamix 2500 data collector:
• 0.6...1.25 kHz
• 1.25...2.5 kHz
• 2.5...5 kHz
• 5...10 kHz
• 10...20 kHz
IMPORTANT
High Pass Filters
Use a high pass filter to remove high vibration, low frequency signal components
that would dominate the signal. For example, structural vibration or signal
components generated by an integrator.
The high pass filter excludes all frequencies below a defined frequency. It allows,
or passes, frequencies above the defined frequency. You define these and other
band filters using the Setup > Band Filter function in the data collector. You can
use a high pass filter with the magnitude and spectrum measurement definitions.
If you select Analog as the data collector filter type, when you define a high pass
filter, the data collector uses one of the following filters determined by the
following formula.
Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
In Emonitor software, on the Data Collector dialog box, the
Enpac Emulation parameter must be set to No.
See
Data Collector Advanced Settings Parameters on page 112
for Settings descriptions.
2 (max frequency)
------------------------------------------- -
number of lines
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