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Joined: Feb 2010
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does anyone know where i can find a schematic for wiring a single phase, 120v rvsing motor using a 4pole, dbl throw toggle?
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Joined: Jul 2004
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Basically you just swap the orange and black wire on most of the motors I see. Use the standard cross connect method on the DPDT sw. Furnas has a lot of diagrams for doing this with their drum switches and various motors. See page 5 http://gfretwell.com/electrical/Catalog%204258%20Drum%20Controllers.pdf
Greg Fretwell
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Joined: Jun 2004
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I've even worked with three-position double-throw switches -- as toggles.
Forward - off - reverse.
Is this a gear-motor?
Tesla
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Joined: Jul 2004
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That is what the drum switches are good for. We have thousands of them here on boat lifts. They use the garden variety 6 lead induction motor in the top left of figure 1 of the Furnas diagrams I referenced. Those are dual voltage, reversible.
Greg Fretwell
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Joined: Feb 2010
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yes, it's a 3pos switch, fwd/off/rvs 4 pole (12 terminal) dbl throw switch. 6 leads coming from motor. boss wants me to use this switch. haven't had much luck looking for a schematic online..?
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Joined: Jul 2004
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Does this help? This is how the drum switch does it. I have never seen it done with 4pDT but if you see the connections necessary we should be able to figure it out.
Greg Fretwell
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Joined: Jul 2004
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Try this. Someone check my logic, it is late 120v wired 6 wire motor
Last edited by gfretwell; 02/06/11 07:51 PM. Reason: Cleaned up the picture
Greg Fretwell
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My style is to bring L1,L2 to the center, common connections. In the center off position the voltage goes no further.
Then Fwd/Reverse use mirrored connections... with either the Run or Start leads flopped.
But that's not the only way to skin a rabbit.
BTW, with my scheme you don't need so many poles.
Tesla
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Joined: Jul 2004
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I was just going for no power ti the motor when it was "off". I see where you could do a couple of different solutions to this puzzle.
The real answer is a drum switch IMHO. They are definitely motor rated and pretty robust. Like I said up thread, we have thousands of them down here on boat lifts. That is why I knew about the black and orange wire thing ;-)
Greg Fretwell
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Joined: Jul 2004
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I agree Tesla I redrew the picture to make it easier to see. You could eliminate the top set of contacts as long as this is a Line/Neutral motor. (wired 120v)
Greg Fretwell
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