Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector User Manual
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Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
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Setting Up Measurements Chapter 3
Magnitude Alarms in the Dynamic 2500 Data Collector
• The Dynamix 2500 data collector supports above, below, in window, and
out of window magnitude alarms.
• You must set Trigger to ‘Yes’ for any magnitude alarms you want to appear
in the Dynamix 2500 data collector during data collection.
• For more on how the Emonitor software combines alarms before sending
them to the Dynamix 2500 data collector, see
Collecting Magnitude Measurements in Multiple Frequency Bands
You can set up multiple measurement definitions at a location to collect
magnitude values for individual frequency bands. Use band filters to define the
different frequency bands in the measurement definitions.
Make sure you select None in the Band Filter dialog box. This forces the
Dynamix 2500 data collector to collect a spectrum measurement. After you
unload the measurement, the Emonitor software calculates the magnitude values
in the bands from the spectrum.
If your measurements include both magnitude and phase, the unit can collect up
to eight orders. If your measurements include magnitude only, the unit can
collect up to 200 orders.
Proximity Probe Measurements
Proximity probes measure the movement of a shaft within a bearing. You usually
make two types of proximity probe measurements with magnitude measurement
definitions.
The dynamic or AC component indicates the changing (dynamic) distance
between the probe and bearing shaft. The static or DC component indicates the
average distance between the probe and the shaft. This is also referred to as the
DC gap.
Follow these steps to setup a Dynamic (AC) Component.
1.
Set up a displacement transducer in the Transducer Calibration dialog box
with Input type set to AC Coupled and Units set mils or um.
Make sure you enter the Calibration value that converts the voltage to a
displacement.
2.
Set up a Collection Specification with Transducer set to the AC
displacement and Signal detection set to Peak-peak.