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Brother Sewing Machine Motor Wiring Question

Discussion in 'Electrics UK' started by BotleyBouy, 17 Dec 2019.

  1. BotleyBouy

    BotleyBouy

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    I have a Brother single phase clutch motor with a multi pin connector block on the back.
    IMG_20191217_222019.jpg
    Here is the data plate...
    IMG_20191217_221927.jpg
    Sorry, I don't know why it's upside down - it's the right way up on my lap top. This is the connector block.. IMG_20191217_222028.jpg

    I don't have the female plug so I'm not sure how to connect the motor to the mains. Here is a picture of the wires coming out if the motor to the male connector (you can ignore the black twin core, that's for the work light)...
    IMG_20191217_215645.jpg
    The red, black & green are, I assume, live, neutral and earth respectively. But what are the yellow and white pairs for? I know some sewing machines were fitted with reversing switches; could that be it? In any event, how I can connect this motor to my domestic supply using a standard 3-pin plug? Can I ignore the yellow and white wires and connect live to live and neutral to neutral?
    Thank you in advance - Joe
     
    Last edited: 17 Dec 2019
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  3. jj4091

    jj4091

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    Most sewing machines have a foot control, which which may be what your other wires are for, so no I do not think you can just connect L.N & E as you suggest, as you would have no speed control.
     
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  4. BotleyBouy

    BotleyBouy

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    The foot control for a clutch motor operates the mechanical clutch, not the power supply. The speed of the sewing machine is controlled by feathering the clutch, just like driving a car in bumper to bumper traffic.

    Could the yellow and white wires be for a condenser? There isn't one inside the casing as far as I can see.
     
  5. jj4091

    jj4091

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    Why would you need 4 wires for a clutch or start or run capacitor? Could be both I suppose but either way I don't think just connecting 240v to the red & black would work
     
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  6. TonyW2

    TonyW2

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    The female half of the connector is designed to have two cables connected; one serves the mains plug and the other serves the foot control. (The foot control probably has a capacitor within it.)
    If you have the foot control, the connector may be still with it and the mains lead may still be in place.
    (My domestic staff store the control separate from their machine)
     
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  7. BotleyBouy

    BotleyBouy

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    I've never come across that type of clutch motor, do you have a photo? My understanding is that clutch motors on industrial sewing machines are running constantly whereas the set-up you describe would have the motor switched on and off with the clutch being operated simultaneously. I can see that being quite hard to control.

    I didn't get a foot control with the motor, I just have the conventional clutch motor foot control plate with the Pitman rod.
     
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