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  1. Replies
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    189

    I know nothing at all about that company. they...

    I know nothing at all about that company. they could be good, or a maker of cheap imitations, I do not know. And I have never had one of their products.

    That said, the unit does cover most of...
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    1,037

    Anything connected to the bus voltage could have...

    Anything connected to the bus voltage could have fried. Since the controls work, the "housekeeping" supply is good, and the capacitors (replaced) are good.

    Nothing is shorting across the bus. ...
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    They usually ARE coated. The silverish look is...

    They usually ARE coated. The silverish look is often from tin, which is resistant to many common corrosive materials, and is plated on the srands to resist corrosion.
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    Unless you can find some sort of external thing...

    Unless you can find some sort of external thing causing the problem, it is inside.

    Fixing VFDs with bad parts is a crapshoot, one that I would not spend much time on, and I have spent a number of...
  5. EXCELLENT! Glad you are back in business. The...

    EXCELLENT!

    Glad you are back in business. The 10A seems about right for low/no flow with a blower, given the marked FLA.
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    652

    There are folks who run an entire shop off of one...

    There are folks who run an entire shop off of one VFD. It's a big one, in general, and essentially acts like a Phase Perfect, the frequency does not get changed.

    The key is it being large enough...
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    A while back you asked about making money with...

    A while back you asked about making money with what started as a hobby. Yes, totally possible. I have some folks I get jobs from. One a little while ago paid as much as I had paid for the...
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    Looks a heck of a lot like part of a torpedo. ...

    Looks a heck of a lot like part of a torpedo. Those insets for screws to attach the afterbody, or warhead section, whichever. Don't see those at the other end, but..... Size looks about...
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    If just one of each pair of IGBTs is shorted, (or...

    If just one of each pair of IGBTs is shorted, (or even just one out of the 6) it will turn on, but will fault out with an overcurrent as soon as the output is enabled by trying to drive a motor.
    ...
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    947

    Not everyone gets a driving lesson in what is...

    Not everyone gets a driving lesson in what is basically an antique halftrack.

    Pretty cool. Maybe a tad rough and loud?
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    Could be, probably isn't, but it certainly cannot...

    Could be, probably isn't, but it certainly cannot help. Depends on what got splashed.

    Did you clean it off? With what, if so?
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    That depends on what you can get to. Standard...

    That depends on what you can get to.

    Standard quick test is to measure resistance from each output to the + and - of the power supply, and reverse the leads (total 4 measurements). Unit should...
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    A VFD that indicates a fault (other than a "no...

    A VFD that indicates a fault (other than a "no load" fault) when there is nothing connected to the motor terminals probably has an internal defect of some sort.

    A short circuit fault in that...
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    636

    If you are referring to induction generation, it...

    If you are referring to induction generation, it most definitely works with induction motors. I've done it, and there are many papers written on the subject.
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    I'm not sure I like the induction generator as a...

    I'm not sure I like the induction generator as a brake. This is for a couple reasons.

    One is that the generator action may or may not be instant.... it may need to "build up", depending on just...
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    3,103

    The "Mini lathes" probably are just not good in...

    The "Mini lathes" probably are just not good in general.

    What I am used to calling a "hobby" lathe is (in the USA) a Logan, or Southbend. In the UK, a Boxford, or Myford. Not sure what it...
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    A couple of things..... first, the rubbing...

    A couple of things.....

    first, the rubbing looks like bearing shift or wear. Probably in the direction of belt pull, if it drives through a belt.

    Second, the blackening is probably not...
  18. It is not saying "moderated".

    It is not saying "moderated".
  19. No, you are not on moderated status. It's "up".

    No, you are not on moderated status. It's "up".
  20. If there are leaks, then odds are the valve to...

    If there are leaks, then odds are the valve to prevent air from coming in won't close.

    If it DOES close, the motor current ought to drop when blower output is blocked (assuming it is not sent to a...
  21. Typically, the current at no load would be...

    Typically, the current at no load would be expected to go up somewhat with voltage. More, if there is any magnetic saturation, which is possible, but that is usually not excessive at only 10% over...
  22. Yeah, there seems to be a pipe leading up, and a...

    Yeah, there seems to be a pipe leading up, and a round housing. The pulley in front looked as if there was a drive to some mechanism, and I did not look closely.

    It appears to be not a squirrel...
  23. An initial thought here is that "load" on a...

    An initial thought here is that "load" on a typical "blower" is actually LEAST when it is not moving air. Typically it is loaded the most when the airflow is completely open. When the blower is not...
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    Eh, bearings are all the better for knowing what...

    Eh, bearings are all the better for knowing what they are for..... We are used to thinking precision spindle bearings, the regular ones are, well, regular, unless of some odd shape, and normally...
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    Ah, well that's different. The values seemed...

    Ah, well that's different. The values seemed appropriate for plate resistors, don't know what they are doing with the relay, since I don't know that unit.

    The tube list seems about right for most...
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