Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector - Manual (Page 72)

72 Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
Chapter 3 Setting Up Measurements
Default Filters
There are also four default filters in the Emonitor software that map to specific
filters in the Dynamix 2500 data collector. The filters are High Frequency,
Envelope, Smart HP, and Overall.
Table 18 - Default Filter Descriptions
Default Filters Description
High Frequency Typically this filter maps to a high frequency filter in the data collector and is
available only for magnitude acceleration measurements. In the Dynamix
2500 data collector, it maps to the 5 kHz gSE filter.
Envelope Typically this filter maps to one of the gSE filters in the data collector and is
available for magnitude and spectrum acceleration measurements. In the
Dynamix 2500 data collector, it maps to the 5 kHz gSE filter.
SmartHP (Smart High Pass) Typically this filter maps to a specific high pass filter in the
data collector and is available for magnitude, spectrum, and time waveform
measurements. In the Dynamix 2500 data collector, it maps to the filters
shown in the table below, depending on the results of comparing the filter
choice to the formula below.
The Emonitor software uses the following formula.
The Emonitor software chooses an overall filter with one of the low frequency
cutoffs shown in the table below. It uses the filter whose cutoff is less than
the result of the formula.
Overall Typically this filter maps to a specific high pass filter in the data collector and
is available for magnitude, spectrum, and time waveform measurements.
In the Dynamix 2500 data collector, it maps to the unit filters shown in the
table below, depending on the results of comparing the filter choice to the
formula below. The Emonitor software uses the following formula.
2 (max frequency)
number of lines
--------------------------------------------
Integrated (A to V, A to D, V to D) Non-integrated (A, V, and D)
5.30 Hz (318 CPM) 2.67 Hz (160.2 CPM)
23.80 Hz (1428 CPM)
Example
The
Emonitor software uses the 5.30 Hz (318 CPM) filter for an
integrated measurement. It uses the 2.67 Hz (160.2 CPM) filter
for a non-integrated measurement.
2 120,000 CPM 
400 lines
-------------------------------------------
240000
400
------------------ 600 CPM 10 Hz = = =
2 (max frequency)
number of lines
--------------------------------------------