Page 2 of 3 FirstFirst 123 LastLast
Results 14 to 26 of 27

Thread: Favorite VFD

  1. #14
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,407
    I wouldn't go out of my way to find the best and more expensive VFD for a couple of exhaust fans. The Lenze-AC Tech are affordable and would get the job done, check the M3220.

  2. #15
    Join Date
    May 2007
    Location
    Dry as a bone Tucson
    Posts
    4,510
    Quote Originally Posted by valdelocc View Post
    I wouldn't go out of my way to find the best and more expensive VFD for a couple of exhaust fans. The Lenze-AC Tech are affordable and would get the job done, check the M3220.
    I looked them up and couldnt find that part #. I believe that M3220 is the Baldor 2 hp #
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
    Blog
    Web
    Facebook


  3. #16
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
    1,439
    Id look into honeywells microdrive series if you can mount the drive indoors. There cheap, and not too complicated.

    I also like yaskawa.

    As far as bypass features go, its a total waste of money, adds up to 50% to the cost of a drive.

    If the the drive fails, its really not that hard to install a few wire nuts and get the motor online. In any case a person would have to go to the drive to force it into bypass. Not but a few more minutes to open the cabinet.

  4. #17
    Join Date
    Dec 2010
    Location
    Down by the river
    Posts
    1,673
    ABB, simply none better
    It's hard to stop a Trane. but I have made one helluva living keeping them going.

  5. #18
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,065
    Allen Bradley

  6. #19
    Join Date
    May 2007
    Location
    Dry as a bone Tucson
    Posts
    4,510
    Quote Originally Posted by heatingman View Post
    Id look into honeywells microdrive series if you can mount the drive indoors. There cheap, and not too complicated.

    I also like yaskawa.

    As far as bypass features go, its a total waste of money, adds up to 50% to the cost of a drive.

    If the the drive fails, its really not that hard to install a few wire nuts and get the motor online. In any case a person would have to go to the drive to force it into bypass. Not but a few more minutes to open the cabinet.
    Thanks for the by-pass tip heatingman. I think I might use a dual disconnect for a by-pass.
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
    Blog
    Web
    Facebook


  7. #20
    Join Date
    Jan 2008
    Location
    Dallas ,Texas
    Posts
    3,724
    Quote Originally Posted by ACFIXR View Post
    Thanks for the by-pass tip heatingman. I think I might use a dual disconnect for a by-pass.
    That could be dangerous without an interlocking device.
    UA 100

    It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.

  8. #21
    Join Date
    May 2007
    Location
    Dry as a bone Tucson
    Posts
    4,510
    Quote Originally Posted by thegoodlistener View Post
    That could be dangerous without an interlocking device.
    Something to think about further. Thanks TGL
    Some Talk, Some Do
    "keeping condensing pressures low and evaporator pressures high"
    "Some customers are more interested in comfort than energy savings"
    Blog
    Web
    Facebook


  9. #22
    Join Date
    Mar 2010
    Location
    Kent, WA.
    Posts
    189
    for a basic drive i use danfoss. I use abb for most of my drives that will be attached to a BMS. abb has built in bacnet, FLN, modbus and N2. with danfoss that would be extra. Yaskawa E7 is a good hvac series drive too.
    Experience
    Is what you get when you didn't get what you wanted.

    A positive attidude will not solve all your problems, but it will annoy enough people to make it worthwhile.

  10. #23
    Join Date
    Apr 2005
    Location
    Boulder,CO.
    Posts
    558
    just the bacnet option or lon option are extra on Danfoss. FLN, Modbus, and N2 come with the drive.

  11. #24
    Join Date
    Apr 2012
    Posts
    17
    ABB,tops in my book.

  12. #25
    Join Date
    Apr 2012
    Location
    Paper Street Soap Company
    Posts
    2,304
    Quote Originally Posted by ACFIXR View Post
    What would your favored drive be for a 208 3phase 2hp motor (for exhaust fans).

    Why?

    Trying to make a final choice and looking for more input. Right now I'm about to choose a Baldor VS1ST22-0.
    Yaskawa. I havent seen enough of a distinction from one manufactuer to another to chose a favorite VFD. Essentially they are all the same.

    3 phase 480/230 in through a 3 phase full wave rectifier wich loads up a bank of capacitors. ( watch out for the 800 + volt dc bus ) From there a 4 to 20 milliamp or 2 to 10 volt analog signal input controls the firing of the IGBT gates that outputs a 3 phase sqaure wave to the motor. ( simplistic yes )

    They all essentially work the same. Ive got a few yaskawa's that have been reliable.

  13. #26
    Join Date
    May 2009
    Location
    Bardstown, KY
    Posts
    94
    TR200 (Danfoss Drive) has the filtering in it that prevents bearing fluting. Most other brands it is an option you have to order seperately.

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event