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Summary of Contents for Allen-Bradley Dynamix 2500
- Page 1 User Manual Frequency Response Function Extension Module for the Dynamix 2500 Data Collector Catalog Number 1441-DYN25-MFRF...
- Page 2 Identifies information that is critical for successful application and understanding of the product. IMPORTANT Allen-Bradley, Rockwell Software, Rockwell Automation, Dynamix, Enpac, Emonitor, and TechConnect are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.
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Page 3: Table Of Contents
Table of Contents Preface Optional Extension Modules........5 Additional Resources . - Page 4 Table of Contents Notes: Rockwell Automation Publication 1441-UM003A-EN-P - May 2011...
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Page 5: Optional Extension Modules
Preface This manual describes the FRF Frequency Response Function Extension Module for the Dynamix 2500 data collector. You install the extension module with the FRF Secure Digital (SD) card. Installing Optional Extension Modules on page 7 for installation instructions. When using the Dynamix 2500 data collector and the FRF Frequency extension module, you can do the following: •... -
Page 6: Additional Resources
Extension Module Users Manual, publication data recorder for real-time data acquisition, 1441-UM005 post processing, and analysis. Dynamix 2500 Data Collector Run Up Coast Down Describes how to record and analyze data from Extension Module Users Manual, publication intermittent events and transient vibration 1441-UM006 signals from non-steady state machines. -
Page 7: Topic Page
Extension Module Battery Status Indicators The installation Secure Digital (SD) cards that you receive work with any Dynamix 2500 data collector. Once you have installed an extension module, the card is locked so that it can be used only with that instrument. -
Page 8: Install An Extension Module
Follow these instructions to install an extension module. Module 1. Open the base cover at the bottom of the Dynamix 2500 data collector. 2. Place the extension module Secure Digital (SD) card contact side-up into the unit until it is firmly seated in place. - Page 9 Installing Optional Extension Modules Chapter 1 The Extension Manager screen appears showing the current extension module installations. 8. Press 0 (Shift) to display the Install Extension function. 9. Press F2 (Install) to install the new extension module. When the installation is complete, a confirmation prompt appears. 10.
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Page 10: Uninstall An Extension Module
Chapter 1 Installing Optional Extension Modules Uninstall an Extension Follow these instructions to uninstall an extension module. Module 1. Press 0 (Shift) from the Setup Utility screen to display the Extension Manager function. The Extension Manager function remains on the screen for about 3 seconds after releasing 0 (Shift). - Page 11 IMPORTANT released so that the card can be used to install the extension module on another Dynamix 2500 data collector. If the installation card is not inserted in the instrument and no card, you are is found or the card does not have the extension module license for the unit, you are prompted to insert the correct installation card or continue without freeing the license.
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Page 12: Manage Extension Modules
Chapter 1 Installing Optional Extension Modules Manage Extension The Dynamix 2500 data collector lets you to hide installed extension modules from the Main Menu. You may need to hide an advanced extension module icon Modules from an inexperienced user, for example, RUCD and FRF. -
Page 13: Extension Module Battery Status Indicators
Installing Optional Extension Modules Chapter 1 3. Select the extension module that you want to hide or show and press F2 (Show/Hide). If you want to show or hide multiple extension modules simultaneously, select each extension module and press F3 (Select). - Page 14 Chapter 1 Installing Optional Extension Modules Notes: Rockwell Automation Publication 1441-UM003A-EN-P - May 2011...
- Page 15 Module The Frequency Response Function (FRF) extension module is an optional module for the Dynamix 2500 data collector. You install the extension module with the FRF Frequency Response Secure Digital (SD) storage card. Install an Extension Module on page 8 for installation instructions.
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Page 16: Newton's Law And Apparent Mass
Chapter 2 FRF Frequency Response Function Extension Module Newton’s Law and Newton’s Law states that force equals mass x acceleration: Apparent Mass F = ma Rearranging this gives: m = F/a The units for this are N/m/s2. The definition of a Newton: N = kg x m/s2 So we can see that: N/m/s2 = kg... -
Page 17: Avoid Bad Data
Avoid Bad Data An FRF measurement involves placing an accelerometer onto the measurement position and pressing Enter the Dynamix 2500 data collector. Be aware of these items before placing the accelerometer: • The magnet should be firmly screwed onto the accelerometer. Any looseness between the magnet and accelerometer will corrupt the measurement. -
Page 18: Frf Module Setup
Chapter 2 FRF Frequency Response Function Extension Module FRF Module Setup There are three parameters that have already been configured to make the setup easier. These are the measurement parameters that are already configured for you: • Pre-trigger delay – set to 10% of block length •... - Page 19 FRF Frequency Response Function Extension Module Chapter 2 The FRF menu appears. 2. Select Setup and press Enter. The FRF - Setup screen appears. Rockwell Automation Publication 1441-UM003A-EN-P - May 2011...
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Page 20: Frf Analysis Set-Up Parameters
Chapter 2 FRF Frequency Response Function Extension Module FRF Analysis Set-up Parameters This table describes the FRF set-up parameters. Table 2 - FRF Analysis Set-up Parameters Parameter Description Value/Comments Acquisition Mode Set to Hammer for FRF acquisition and modal analysis, Hammer (default) or set to Continuous for ODS analysis. - Page 21 FRF Frequency Response Function Extension Module Chapter 2 Table 2 - FRF Analysis Set-up Parameters Parameter Description Value/Comments Num of Lines Sets the number of lines of resolution for the FFT. The 400 (default) Acquisition time information box changes accordingly. When set to Automatic, the FRF module automatically chooses the number of lines after three trial hits.
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Page 22: Collect Frf Data
Chapter 2 FRF Frequency Response Function Extension Module Collect FRF Data Once the measurement is set up and the transducers are attached correctly, the next step is to start collecting data for the FRF. Follow these instructions to collect FRF Data. 1. - Page 23 FRF Frequency Response Function Extension Module Chapter 2 When hitting the object, try to make sure that you have one clean tap and that the hammer hits directly opposite of where the accelerometer is located on the object. If this is done correctly, the instrument registers the hit and increases the number-of-hits count displayed at the bottom of the screen.
- Page 24 Green Instrument is collecting data. In Hammer mode, it is looking for a hit. See the Dynamix 2500 Data Collector User Manual, publication 1441-UM001, for more information about the status indicators: • If the Accept/Reject option in FRF - Setup was set to Automatic, each hammer hit is collected and the Dynamix 2500 data collector automatically determines if the data is correct.
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Page 25: Field Calibration
FRF Frequency Response Function Extension Module Chapter 2 The FRF - Taking Data screen shows frequency, magnitude, phase, and Q factor (where appropriate) at the cursor position. The FRF is colored red where coherence falls FRF Measurement below 80%. Good coherence shows the trace in green. - Page 26 Chapter 2 FRF Frequency Response Function Extension Module 2. Connect the hammer to connector A. 3. Select an accelerometer of correct mass and connect to connector B. 4. Place the accelerometer on mass. The mass can be hand-held. The use of foam or a supporting structure is not necessary.
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Page 27: Saving, Reviewing, And Deleting Frf Measurements
FRF Frequency Response Function Extension Module Chapter 2 Saving, Reviewing, and You can save measurement setups and measurement results. You can use these for reviewing and recalling stored measurements. Deleting FRF Measurements Save an FRF Test Setup and Measurement You can save the FRF Test set-up parameters and measurements to a file that you can recall at a later time. -
Page 28: Importing To Ods Analysis Software
Chapter 2 FRF Frequency Response Function Extension Module Importing to ODS Analysis Operating Deflection Shapes (ODS) analysis is used for determination of the vibration pattern of a structure under certain operating conditions. Vibration Software. measurements can be performed at different locations and in different directions on a structure and the vibration pattern can be shown as an animated geometry model of the structure or listed in a shape table. - Page 29 Index corrupt 17 offroute 15 bad data modal analysis 15 avoid 17 battery status icons 13 battery status icons 13 Newton’s Law 16 calibration 25 Operation Deflection Shape 15 coherence 15 parameters 20 Emonitor 15 phase 25 Extension Manager 7 pre-trigger delay 18 FFT 21 response range 20...
- Page 30 Index Notes: Rockwell Automation Publication 1441-UM003A-EN-P - May 2011...
- Page 32 Rockwell Automation Support Rockwell Automation provides technical information on the Web to assist you in using its products. At http://www.rockwellautomation.com/support/, you can find technical manuals, a knowledge base of FAQs, technical and application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the best use of these tools.