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Download Siemens 880 User's Manual
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Vibration Analysis Sheet Pick-Up Point Position Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Disp. Mils Filter-Out Coupled Freq* Vel. Freq.* CPM In/Sec CPM Vel. Mils Freq. CPM Vel. Mils Filter-In Coupled Freq. Vel. Freq. CPM Mils CPM Vel. Mils Freq. CPM *Dominant Frequency Before vibration difficulties are reported, accurate vibration readings should be taken and consideration given to the following: 1) How does vibration level at center line of motor 5) Does vibration level change when mounting bolts are loosened compare to that at motor feet and foundation? one at a time? Do feet distort when bolts are loosened? 2) Is motor on a fabricated base or grouted in concrete? 6) Is motor for coupled or belt-drive use? Is a coupling used on a 3) When power is cut, does the vibration decay long shaft motor? If so, how long is the key and what is the immediately or does it gradually die away? length of the coupling? 4) Is there a large shim pack under motor feet? 7) Is there a resonant condition in the system which can be checked by a hammer test? - 30 -
