DOL starter switch

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DOL starter switch

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  • #372126
    clogs
    Participant
      @clogs

      Having trouble with placing photo's on the forum…..the search box is no help….

      have replaced the 3ph starter push button on/off switch on my Colchester lathe….

      the photo's would explain better but the main wires are no problem…all wires coded by me before disassembly and the switch box's )old and new) use the same wiring term numbers…..my problem is with the reverse switch……just 1 wire……

      not fired it up yet as don't want to burn anything out…….

      So help with the photo placing would be great help anyway but an offer of private email help would be just the ticket, if there would be someone so kind to help……

      I live in the boonies and there is no chance of finding a 440volt electrician even if I wanted……..

      I'm not completely helpless but just worried……..as I say the photo's will explain everything…..it's just I'll have a job to do quite soon……….

      thanks for looking…..Cl;ogs

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      #33268
      clogs
      Participant
        @clogs
        #372132
        Neil Wyatt
        Moderator
          @neilwyatt

          Hi Clogs.

          Click all topics.

          Choose the top of the list:

          Website FAQ's
          Information about where to put postings, etiquette, and general guidance. Information on posting classified adverts.

          Then choose the top of the next list:

          STICKY: How To Post Pictures and Create Albums
          The definitive guide? By Neil Wyatt

          Neil

          #372133
          Neil Wyatt
          Moderator
            @neilwyatt

            I've added the word 'photographs' to both to make it more obvious.

            Neil

            #372137
            Robert Atkinson 2
            Participant
              @robertatkinson2

              To reverse a 3 phase motor you just need to swap two phases of the supply, any two, it doesn't matter which two wires you swap.

              Robert.

              #372141
              clogs
              Participant
                @clogs

                thanks R. Atkinson,,,,

                actually know that one but the reverse switch is wired thru the DOL…….giving the odd wire…

                will try tom. to get some photos on the forum…..

                ta Clogs

                #372146
                john swift 1
                Participant
                  @johnswift1
                  #372148
                  Les Jones 1
                  Participant
                    @lesjones1

                    Hi clogs,
                    If you still can't post pictures on the forum with the help from neil's links the PM me and I will give you my email address so you can send pictures as attachments. If you can post the schematic as it is shoing the origin of the wire then it should be possible to work out where it should be connected. It could just have two of the three phases in and out and the third phase just bypassing it. it could also have the three phases in and out. If it has a centre off position it could be one of the previous ways plus two wires that cause the main starter to drop out in the centre off position. This would stop you from going straight from one direction to the other.

                    EDIT. I've just noticed John's post with the schematic that uses two cantactors, one for forward and one for reverse. Is yours like this or does it have a single contactor plus a reveresing switch ? (As opposed to a forward, a reverse and a stop button.)

                    Les.

                    Edited By Les Jones 1 on 17/09/2018 20:11:49

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