Do you know of any manufactures of High On/Off Cycle Motors, with a web site.
2006-08-05 10:32:13 · 3 answers · asked by John G 3 in Science & Mathematics ➔ Engineering
Adding an assebly line machine that flips a car tire after it has been balanced. We asked for 480VAC but the vendor DELIVERED 90VDC with DC drives and said the number of cycles would destroy an AC motor. All other motors on the line are 480VAC but cycle only once per tire. This will cycle twice per tire. BTW the small DC drive circuit board fails to provide Fwd/Rev ability as well!
2006-08-05 11:05:22 · update #1
Yeah we're just stoked about the whole thing. Mechanically it appears to be well built. The controls are where they messed up. I'm reasonably sure we can make it work and 90VDC motors instead of 480VAC is not a show stopper. It just isn't going to happen this weekend and Monday we're gonna decided how hard to stick it to the vendor. To be continued . . .
2006-08-05 13:07:00 · update #2
So you've got a lot of 480-vac machines cycling every minute and you're wondering if you can get a motor that cycles every 30 seconds?
Sure. It is just part of the specs. There's a much higher amperage on start up and all of your machines do that frequently, so they must dissipate heat faster than some consumer grade product or anything not spec'd for frequent cycling. They have to have larger fins, cooling fans, or the vendor just derates some larger framed motor.
Sure sounds like your vendor screwed up and is trying to cover his *** after the fact. How could he possibly think you'd want to be surprised by the delivery of a different motor? Sure, call out an alternative in the BID process. But DELIVER what was ordered, unless you've got an approved change order.
The lack of reversibility sounds like yet another deviation from specifications and one that is very obviously less flexible, less desireable and non-compliant with the purchase order.
2006-08-05 12:51:58 · answer #1 · answered by David in Kenai 6 · 1⤊ 0⤋
It I got it right you are turning it on/off every 28.8 seconds which isn't very fast most motors should handle this.But What are you doing that requires this cycle rate?
2006-08-05 10:47:02 · answer #2 · answered by Daniel H 5 · 0⤊ 0⤋
It isn't good. It won't destroy it. The motor won't last as long as normal.
2006-08-05 19:12:27 · answer #3 · answered by DoctaB01 2 · 0⤊ 0⤋