Electric Motor Wiring

Discussion in 'The Projects Forum' started by bigrig, Apr 26, 2010.

  1. bigrig

    Thread Starter New Member

    Apr 26, 2010
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    Can someone help with wiring an ac motor for my home project? I have a Dayton fractional hp 115 ac gearmotor.
    It has 4 wires labeled field/yellow,field/red,armature/blue,
    armature/black. It shows line yellow and black for cw or line yellow and blue for ccw. Ignoring the 3rd wire ground and hooking ac line to yellow and black what do I do with remaining 2 wires red and blue?
     
  2. BMorse

    Senior Member

    Sep 26, 2009
    2,675
    234

    Here is the wiring diagram off of a 115VAC Dayton Motor I have on hand,

    the numbers in the schematic matches the numbering on the connection breakout of the motor....
    DAYTON MTR1a.jpg

    DAYTON MTR2.jpg
    I hope this helps....

    B. Morse
     
  3. bigrig

    Thread Starter New Member

    Apr 26, 2010
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    Thank you for the diagram. I understand that hooking one side of ac to field(yellow) and other side to armature(black) should produce cw rotation but I am unsure if to hook remaining wires together or not use them at all. all 4 wires are hanging loose from motor.
     
  4. BMorse

    Senior Member

    Sep 26, 2009
    2,675
    234

    No wires should be hanging loose from the motor, the breakout connectors on the end of the motor is where all the wires should go according to the diagrams for CW and CCW... Is your motor missing the breakout terminals??

    B. Morse
     
  5. bigrig

    Thread Starter New Member

    Apr 26, 2010
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    It is an old motor but never used. It is factory wired internally with access wires to hook up in various applications. I was going to bench test to be sure it would still work. Will take my best shot, film at 11. Thanks for the help.
     
  6. gerty

    AAC Fanatic!

    Aug 30, 2007
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    Are you sure it's an AC motor? From what you described it sounds like a DC motor.
     
  7. JoeJester

    AAC Fanatic!

    Apr 26, 2005
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    What is the model number of the motor?
     
  8. bigrig

    Thread Starter New Member

    Apr 26, 2010
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    The model # is 2Z797A and says volts 115 and does not say ac or dc. It was sold by Grainger but this model is no longer available and could find no info on their website.
     
  9. rjenkins

    AAC Fanatic!

    Nov 6, 2005
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  10. BMorse

    Senior Member

    Sep 26, 2009
    2,675
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    I talked to my Dayton Rep, and this is an AC/DC motor, the proper way to connect power to it would be like this...

    2Z797_connection.gif

    Red and Blue just tie together.....

    B. Morse
     
  11. bigrig

    Thread Starter New Member

    Apr 26, 2010
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    Thank you Morse. That seems to be correct. It will run on ac and will reverse when switching two of the wires. I appreciate the extra effort talking to a Dayton rep. It runs like a champ and I found info on the web by leaving the A off the model number
     
  12. alim

    Senior Member

    Dec 27, 2005
    113
    1
    I must commend you for the effort you made to provide a solution. It will surely help many others.
     
  13. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
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    I have used my share of dayton motors. A previous HVAC company replaced our self-contained units blower motors with unsealed units. The building runs around 90% - 100% humidity. These things get drenched, as they are inside the blowers squirrel cages. So they shorted out -all- seven of them in about a month. So I went with the dayton sealed replacements and that was 2.5 years ago. Still going.

    @BMorse, you are one of those invaluable resources here on AAC. I hate you for it ;)
    just kidding.

    @alim-
    Wow December 2005 and still only a Member. I guess membership levels are not based on time. You should be potentate or something. :)
     
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