Vibration

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#14319 - 05/30/15 04:52 AM Re: Vibration [Re: traction]
Joined: May 2012 Posts: 194 Len member
Len member Joined: May 2012 Posts: 194	We encountered a similar problem on a 411 mod with existing Westinghouse 28 machine..after hooking up a chart recorder it was determined..the jitter from the ride matched the same from the machine mesh..harmonics from the drive..unfortunately the only way to fix this without changing out the machines..was to slowdown the cars.thus virtually reducing the jitter tremendously...

#14321 - 05/30/15 12:24 PM Re: Vibration [Re: christycollett]
Joined: Aug 2011 Posts: 563 uppo72 addict
uppo72 addict Joined: Aug 2011 Posts: 563	Originally Posted By: christycollett Another idea; years ago we had the same problem on a 1000 FPM car in Seattle. Drove us nuts, we did everything you guys mentioned above to no avail. Finally one of the Brighter Bulbs among us (you know a guy that doesn't have that blank look on his face typical of most elevator men) Guess the word he used was "Harmonics" It was combination of several things. His fix was to bolt a flame cut cwt filler on angles attached to the bottom of the Xhead. To give you an idea of the set-up. You could sit on the filler and operate the permit ally mounted car top inspection station. He moved the filler in and out until the vibration disappeared. Know it sounds kinda hokey but it worked. Work Safe All CC, is this an air dampener( to fix buffeting from wind resistance) or to adjust the hang of the car within the rails slightly different? Maybe the last resort is to de-rate the load if the heavier weight fixes the problem?

#15673 - 12/23/15 05:09 PM Re: Vibration [Re: traction]
Joined: Dec 2014 Posts: 1 elevator_bg stranger
elevator_bg stranger Joined: Dec 2014 Posts: 1	Did you solve the issue? I am having similar problem with a new Sicor installed, ropes are changed, but when in the car you can feel with your feet a vibration when the machine stops. It also has a sound with the vibration, but theyare present only when the machine stops. The machine was checked and it's ok, the floor of the machine room is made of corrugated sheet metal type, which maybe makes resonance.

#15674 - 12/23/15 08:40 PM Re: Vibration [Re: elevator_bg]
Joined: Jan 2012 Posts: 885 jkh 4 Ever Learning.
jkh 4 Ever Learning. Joined: Jan 2012 Posts: 885	AC VVVF? Speed? Floors? Is the brake setting too soon? Brake tension set correctly? Does it vibrate more or less with capacity in the car? Make good choices, JKH

#15676 - 12/23/15 09:42 PM Re: Vibration [Re: traction]
Joined: Dec 2010 Posts: 566 elmcannic addict
elmcannic addict Joined: Dec 2010 Posts: 566 S. Central Utah	Off topic here, but nevertheless... Last week I received a call from my area Inspector asking if I had any Motion 4000 Traction Controls on my route. "Nope". Evidently there is a problem within the drive or brake circuit (with at least one recorded accident). The Inspector told me MCE is sending out their Technical Bulletin, and they may even ask that you remove affected units from service until the repairs can be made. I'm not sure what applications are suspect other than the MCE 4000 model traction controller. If you have or know of any recent MOD's using this model, please have the units serial numbers verified by MCE Merry Christmas Forum Members

#15689 - 12/24/15 04:44 PM Re: Vibration [Re: elmcannic]
Joined: Jan 2012 Posts: 885 jkh 4 Ever Learning.
jkh 4 Ever Learning. Joined: Jan 2012 Posts: 885	Thanks for the info Happy Holidays Make good choices, JKH

#15738 - 12/30/15 11:55 PM Re: Vibration [Re: traction]
Joined: Apr 2010 Posts: 218 Smitty bangyourheadhere
Smitty bangyourheadhere Joined: Apr 2010 Posts: 218 Annapolis Md.	Did the guys perform a self tune on the drive during installation?

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