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Speed Controller

Discussion in 'Grinders' started by John Noon, Sep 18, 2016.

  1. John Noon

    John Noon Well-Known Member

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    found out my belt speed was so slow that it was perfect for wood but horribly slow for steel.

    Getting a new pulley made the is sized to run the belt at its maximum speed so the need for a speed controller is apparent.

    Son in law talked with a electrician and he said not all 220 volt single phase will survive being hooked up to a speed controller.

    Current motor is a capacitor start model C319 TEFC 220 volt single phase.
    No luck finding the answer one way or the other.

    So what type of speed controller motor combination are people using?
     
  2. Kevin Cox

    Kevin Cox KC knives

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    I'm using KBAC 29 drive with 220v 3p motors . I run baldor and lesson motors from 1.5hp to 3hp . I have it wired with switches so I run 6 grinders on one drive. But one at a time.
    This drive is 220 single Phase in and 3 phase out .
    Motors are all 1750 rpm and the drive is wired to double speed .
     
  3. John Noon

    John Noon Well-Known Member

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    I do have a 3 phase motor sitting here brand new that is 220 volt. Maybe I should get the controller for that instead of the single phase motor.

    6 grinders? wow and I thought it was bad having 3 buffing machines so I don't have to change wheels
     
  4. Kevin Cox

    Kevin Cox KC knives

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    Lol yes go with the 3p motor and get a drive for it . To me it's the best way to go.
    Will I have 6 on one drive but I have 8 in total. I hate changing things around. I would post pictures but I have trouble with that.
    You can find me on Instagram under
    Kcknives.
     
  5. John Noon

    John Noon Well-Known Member

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    Checked it out, well I don't feel so bad about thinking of getting a second grinder with a ten inch wheel or little wheels for choils and such
     
  6. Kevin Cox

    Kevin Cox KC knives

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    For sure a 10 wheel is nice . I just bough one about a month ago. I can't even think about going back to one grinder.I think I would just cry if I had to do that lol.
    7 of my grinders at TDM grinders just love everything about Terry's grinders. I like the 5 slot welded together ones the best. They are so many thing you can do with them .
     
  7. John Noon

    John Noon Well-Known Member

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  8. Kevin Cox

    Kevin Cox KC knives

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    That's the ones . Terry is the guy he lives in Sundra Alberta. Tdmgrinders@gmail.com
    Till him I gave you his e mail.
     
  9. John Noon

    John Noon Well-Known Member

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    Thank You and done.
     
  10. Kevin Cox

    Kevin Cox KC knives

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    No problem glad I can help out a little. I will be doing a video on putting one of Terry's grinders kits together soon .The kit is on its way to me and once I get a bit of free time I will do a start to finish video on welding it together yourself.
    It goes together like a dream. I did one myself this year and it took me like two hours welded buffed and painted . Just I forgot to do a video . Got to excited hahahaha So now I will do one more to show everyone how it goes.
    There all pre cut and fits together like a puzzle then just a few tacks and you have one sweet grinder.
     
  11. Grayzer86

    Grayzer86 Active Member

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    I guess this is mostly sorted out but I also run a 2hp 3ph motor with a TECO FM50 VFD for speed control. Its not a dust proof VFD, so i have it mounted in a sealed enclosure, which for me was the cheapest way to go. As far as i know there is no reliable long term option for speed controlling a single phase motor, or at least not one that is cost effective enough to be worth doing instead of the 3ph / VFD combo. If you already have a 3ph motor yu should be able to pick up a TECO VFD for under $200 depending on what hp rating you need.
     
  12. John Noon

    John Noon Well-Known Member

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    The single phase motor is getting shelved or I will drill out the 12" sanding disk backing plate to fit a 7/8" shaft, going with the three phase motor if and when someone decides too return my call so I can give them some money. Be faster to order through Alberta supplier and at this point I am giving up on Winnipeg companies, Took a month to get a price on some steel after a dozen emails and phone calls.
     
  13. dancom

    dancom Dust Maker Best Shop Tool

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    On recommendation...

    Put the motor on a 4 wire plug & receptacle >3 phase + ground. In the future you can use the same VFD to run a bunch of different 3 phase motors (albeit one at a time) and will save you a pile on electronics. Maybe make your VFD somewhat portable and plug in and go. Of course if you have a busy shop where more than one machine is being used at a time this won't work, but most of use can only operate one machine at a time. For me, I lack the additional arms to run two machines at the same time. ;)

    Cheers,

    Dan
     
  14. John Noon

    John Noon Well-Known Member

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    You peeking over my shoulder??? was looking at a pile of steel and assorted wheels thinking I could throw another grinder together with the current motor and pulley for sanding handles and other details. Even have a small wheel attachment here I have never made a mount for.
    Just planning the rearrangement of the work bench and other tools to fit in the extra grinder (sander)
     
  15. Kevin Cox

    Kevin Cox KC knives

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    I've used the plugs on my grinders but found it to be a pain to plug and on plug all the time. For alittle more money buy the 3p switches . Put a junction box in on the motor side of your vdf Then run a wire from the junction box to each grinder with a switch at each one .Then every grinder is ready to use . But you still only use one grinder at a time. This is what I have set up in my shop. You waste on time you just as to flick the switch on or off to each grinder. You can have as many grinders you want on one vdf .
    If anyone would like to see my setup just email me
    kcknives@hotmail.ca
    I'll be back from moose hunting in two weeks
     
  16. John Noon

    John Noon Well-Known Member

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    Have been told a few times now the VFD are really expensive but no one who will sell one so anyone know of a Alberta or Saskatchewan company that does not mind me spending money??? around here they must be several thousand dollars each or something wild.

    So I am looking for a KBAC-29 (1P) with single phase 230volts in and 230V 3phase out p/n 1001 for the grey box. preferably less than the cost of a complete grinder with one :roflmao
     
  17. dancom

    dancom Dust Maker Best Shop Tool

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    Try a place called KVA Dynamo in Regina. They may also be in Winnipeg.

    Dan
     
  18. John Noon

    John Noon Well-Known Member

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    Thank You, I will call the Regina office. They are a half hour further away than Winnipeg
     
  19. Kevin Cox

    Kevin Cox KC knives

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    I buy mine from the US Walker ins should be around 330.00 US They will wire in safety switch and forward and reverse for you to. Very good service .
     
  20. John Noon

    John Noon Well-Known Member

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    $300 in the States okay slightly different from $1500 which was the one and only price I could get for the KBAC-29 (1P) , and that was after being told it was to expensive too order by three companies even if I paid in advance.
     

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