Logan Lathe Furnas Drum Switch to Motor Wiring Need Help
Close
Login to Your Account
Results 1 to 7 of 7
  1. #1
    Join Date
    Aug 2004
    Location
    Seattle, WA
    Posts
    10
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default Logan Lathe Furnas Drum Switch to Motor Wiring Need Help

    Hello
    I have a Logan Lathe (mdl 815) that I'm upgrading the motor and replacing the reversing switch on.

    The motor I'm installing is a Marathon Cap start 3/4hp, dual voltage & reversible. I will be running it on 110v.
    Pic of the wiring diagram from plate attached.

    The Drum Switch is a Furnas mdl A-14 / A14. It is a 3 position switch with Off in Center position with Forward & Reverse on opposing sides. Note the terminal connections are not #'d 1 thru 6 as many are. I understand that line leads go to A & B. Not sure which would have the Hot lead (black).
    Pics of the switch, connections & terminals attached.

    Appreciate greatly any help on wiring this up. Should be noted that I am not familiar with terms such as start & run windings.
    Accordingly, basic "connect T1 to terminal 4" would be most helpful....

    marathonmotor.jpgdrumdiagram.jpgdrumterm.jpgdrumswitch.jpg

  2. #2
    Join Date
    Dec 2007
    Location
    Massachusetts, USA
    Posts
    824
    Post Thanks / Like
    Likes (Given)
    257
    Likes (Received)
    545

    Default

    You can fine a wiring diagram here: Motor and Switch Wiring Diagrams
    Scott Logan ,granson of the founder of Logan owns lathe.com and still sells original parts and manuals.
    He also moderates a Yahoo group for Logans here:Yahoo Groups
    Registration is req'd for the Yahoo group.

    JR

  3. #3
    Join Date
    Jan 2010
    Location
    Indianapolis, Indiana, USA
    Posts
    5,475
    Post Thanks / Like
    Likes (Given)
    2426
    Likes (Received)
    927

    Default

    Someone should consider purchasing the drumswitch.com domain name and start buying "how to wire drum switch" top result placement from google.

    It's only $700; should be able to make it back quickly enough, judging from the 28,000 results on Google for "how to wire my drum switch".

    For "how to wire my drum switch south bend lathe" there are 24,500 results.

    Of course, Milacron could just filter out the link whenever I attempted to post it.

    Like he does with *******.com

  4. #4
    Join Date
    Dec 2003
    Location
    suburbs of Ann Arbor, MI, USA
    Posts
    13,038
    Post Thanks / Like
    Likes (Given)
    423
    Likes (Received)
    1011

    Default

    We aren't helping this poster very much. So here's a stab.

    I *assume* the motor is a 115v/230v motor, hence Low Voltage would be used.

    The motor states that Black and Red must reverse places in the diagram for the motor rotation to reverse.

    I see that 4 and 2 connect to a different string of terminals as the lever is moved. (I played around with a diagram on paper as it helps me think some)

    So 4 to Red....P2 to 3...Orange to B....(and then) 2 to Black...White to A...Land L2 and Yellow on 1.

    Interchanging Red and Black in my string of text (and they move with 4 and 2 respectively) as if the lever has moved to reverse the rotation we get

    2-Black...P2-3...Orange-B (and then) 4-Red...White-A....and L2-Yellow-1

    That makes sense to me as it agrees with the drum switch interconnects and also the motor interconnections required. Connect P1-L1 and Blue-T1 independently of the drum switch.

    Hope that helps.

  5. #5
    Join Date
    Nov 2004
    Location
    WI
    Posts
    4,607
    Post Thanks / Like
    Likes (Given)
    391
    Likes (Received)
    1034

    Default

    For a single phase motor, it will NOT reverse when you try to reverse it.
    It can be coasted to a stop, and then started in either direction from a stop.

    -------

    A three phase motor can be instantly reversed. That is one of the advantages of three phase power and three phase motors.

    For around $100 you can get a VFD that will drive a three phase motor from single phase power, and also give you variable speed.
    No reversing switch needed.

  6. #6
    Join Date
    Aug 2004
    Location
    Seattle, WA
    Posts
    10
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default

    Hello
    Thanks much folks for the assistance.
    Matt, I'll give your directions a whirl tomorrow.
    SW Yes, there are soooo many Google results using "drum switch wiring", I probably looked at close to 100 of them. There being so many different switch and motor combinations...I never did find the correct match....thus here I am.
    3t2d, vfd's are great, I have & do use them for many machines as I only have single phase available in my shop (aside from generator usage), with this lathe however the preference was to do otherwise.

    Thanks again folks.....I'll let ya know how I came out.
    btw...ya hear the Seahawks clobbered Orleans, not that I'm a football fan so much as a Seattleite..

  7. #7
    Join Date
    Aug 2004
    Location
    Seattle, WA
    Posts
    10
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    0

    Default Huge Thanks MATT!!! We have Success!!

    Quote Originally Posted by rgnoll View Post
    Hello
    Thanks much folks for the assistance.
    Matt, I'll give your directions a whirl tomorrow.
    SW Yes, there are soooo many Google results using "drum switch wiring", I probably looked at close to 100 of them. There being so many different switch and motor combinations...I never did find the correct match....thus here I am.
    3t2d, vfd's are great, I have & do use them for many machines as I only have single phase available in my shop (aside from generator usage), with this lathe however the preference was to do otherwise.

    Thanks again folks.....I'll let ya know how I came out.
    btw...ya hear the Seahawks clobbered Orleans, not that I'm a football fan so much as a Seattleite..
    Huge Thanks MATT!! Successful Wire up Completed!!


Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
2