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Thread: Guess what's coming tomorrow?

  1. #11
    Join Date
    Jan 2013
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    Michigan
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    I hope the new machine is awesome!

    I have read that VFDs do suffer from the bad cap problems, and that they degrade just sitting on the shelf. I've read that buying used VFDs is a real crapshoot. Good thing I didn't consider that when I bought my Hitachi. I got a very nice deal on it via 'bay and it has been flawless. I do see huge numbers of used VFDs for sale at auction. I'm now more reluctant to consider them.

    I have read that some VFD mfg's have a process for bringing them up after storage, apparently to protect or re-form the caps. Or maybe it is something that is supposed to be done to them while in storage, at regular intervals. I haven't read about specifics and am curious. The manual on my hitachi is large and intimidating - maybe 300 pages. Fortunately I found settings on the 'net and didn't need to dive too deep.

  2. #12
    Join Date
    May 2015
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    Somerset UK
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    For anyone wanting to get more info on electrolytic capacitors, I recommend: https://www.badcaps.net/forum/index.php?

  3. #13
    Join Date
    Mar 2015
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    My Bridgeport has a Teco, works well, but I purchased it for the HP rating, not the current it can handle. I have a slow ramp up on it to keep the current down. On the lathe this time, I went by maximum current. The lathe motor is 1.5 hp, max 10 amps. This Teco drive is rated for 3hp, 10.5 amps. Also got the dynamic braking resistor to help with the higher mass on a lathe. It should stop much quicker. Still waiting for UPS freight.
    300$ for this Vector drive, full featured.
    Last edited by RB211; 02-07-2019 at 03:51 PM.

  4. #14
    Join Date
    Aug 2007
    Location
    Custer WA
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    566

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    Quote Originally Posted by RB211 View Post
    Still waiting for UPS freight.
    all I have to say


  5. #15
    Join Date
    Jan 2004
    Location
    Missouri
    Posts
    30,401

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    Does not matter, the OP bought a TECO, which should be OK. Even if it failed, it would not be likely to fail in a ball of fire....

    Just sayin.... you are correct about the "side door deals" on the HY that get sold on ebay. There are also the ones ONLY for specific high speed spindles, being sold as general purpose, etc. And the manuals that in some cases, at least, would have to get better to really suck.

    That all said, having seen the innards of some of the HY, they were so far from being a UL acceptable device.... well.... I wouldn't even plug one in. They may be better now, but they were built really badly at one time.
    1601

    Keep eye on ball.
    Hashim Khan

  6. #16
    Join Date
    Dec 2004
    Location
    East Coast, USA
    Posts
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    I've got several VFDs. A Huanyang VFD that came with my 2.2kW spindle, A Mitsubishi FR-D700 for the Bridgeport,
    and a LAPOND SVD-ES for my Surface grinder and all of them function well and haven't had any problems at all. I've only played with the Huanyang VFD for a few minutes after setting it up, but it functioned perfectly.

    https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    https://www.ebay.com/itm/2-2KW-ER20-...p/232493623262


    Work hard play hard

  7. #17
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    Mar 2015
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    They said between 1 and 5. It is now pass 5...

  8. #18
    Join Date
    Jun 2007
    Location
    Anderson SC
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    Quote Originally Posted by RB211 View Post
    They said between 1 and 5. It is now pass 5...
    Can't trust stuff that goes by air freight LOL

  9. #19
    Join Date
    Mar 2015
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    2,793

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    Quote Originally Posted by Sparky_NY View Post
    Can't trust stuff that goes by air freight LOL
    I wonder how much they would charge for a 1300lb shipment via air? I know the 747 is about 10,000 to 14,000 per hour operating cost, maybe more. Could carry 190 of these 12x36T lathes... Would bulk out before gross out...

  10. #20
    Join Date
    Jan 2014
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    In the desert
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    Quote Originally Posted by RB211 View Post
    They said between 1 and 5. It is now pass 5...
    Most likely its the local trucking company. I've had outfits tell me all kinds of stories about why a delivery sat in their depot instead of being delivered.
    *** I always wanted a welding stinger that looked like the north end of a south bound chicken. Often my welds look like somebody pointed the wrong end of a chicken at the joint and squeezed until something came out. Might as well look the part.

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