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Thread: wiring an atlas switch with a dpdt toggle

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    Default wiring an atlas switch with a dpdt toggle

    Hi, I have an atlas turnout with a 2715 remote switch. It has 3 wires coming out, black, green and red. I have a power source, 16v, with 2 wires. Please leave the CDU aside for the moment, as it is not relevant to this discussion . I then have a DPDT toggle (on) off (on) for activating the solenoid thingy. (BTW, I may be using some technical terms here, but I have no idea what I am doing, so please be gentle with me and don't reply in techese!!! and don't use squiggly diagrams either, please.)
    What I need to know is which wire goes where on the toggle switch, please. there are 6 spades, being 3 blocks of 2. To which 2 does the power go and to which 3 does the switch connect and which colour goes to which spade? Please keep it simple for me.
    thanks, Bill.

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    Is the switch self-centering or does it stay to the side you throw it?
    The Atlas switch motors should not get continuous current or they will get hot and melt. If your DPDT is not momentary you need to add this with a push button.

    I used nice straight lines on the diagrams. The little half loops where one wire cross another is NOT connected. Connections end in circles or just intersections. The blue boxes are the switches as seen from the bottom.


    1. The first drawing is how to use two push buttons.
    2. The second is how to wire a MOMENTARY or self-centering switch.
    3. The third shows how to use a standard DPDT switch with a push button to provide a momentary application of power. You can wire all the toggles on the local control board to a single button and use it like a CTC board. You can set a route and then activate the switches at once. Otherwise one push button per toggle.
    4. The fourth just adds LED indicators that can be used as signals by the switch as indicators, that could be seen from a distance.


    Use the 16V sparingly, it will burn up your stuff faster.
    What is your power source?

    The DPDT/push button combo operates just like the factory Atlas controller.
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    If the DPDT is not momentary, you could easily burn out your turnout coil.

    Here is ONE way to do this:


    Taken from this page: http://www.awrr.com/indicator.html

    It involves an additional pushbutton, and the LEDs are extra features.

    Here's some other ideas:
    TO_Coil_Control_SPDT.jpg
    TO_Coil_Control_PushButtons.jpg
    -Dave L

    My simple site: http://therustyspike.com

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    The designation (on) is for a momentary contact. Reading Bill's post I am not sure if they are momentary. If they are when the switch (Toggle) is moved it will return to center position. I would use ChicagoNW second example with a momentary switch.
    Doug

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    Chicago, pic 2 is perfect, thank you. Now I get it!
    Doug, your comments are well made and understood, thanks.
    The power source is just the ac bit of the power cab which I thought was 16v but may be less. Not sure, but will check. The toggle is self centring, so does give momentary power, but I will add a CDU between the power and the switches in all instances as all the wise words seem to point in that direction.
    Claymore, thanks also for your input. I don't have any idea what you have drawn but I do appreciate the fact that you have replied and helped an MRR in need.
    thanks again to all of you, cheers, Bill.

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    This was quite helpful! I was thinking about switching over to toggles from momentary atlas switch boxes (#56). I have a new question though. Say you still have atlas momentary switch boxes and you want to put one led on the box (one color, one function) to show what direction the track is (on = straight, off = branch) is this possible?

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    I don't know of a way to do that with the Atlas #56. It operates electrically like ChicagoNW's drawing #1. The plastic part you slide from side to side is a momentary push button so when you release the circuit is opened. It can be done a couple of ways though. One is to use a Atlas snap relay # 200. The other is to use a dual coil latching relay. The Atlas snap relay will be the simplest to wire. There is a sheet with the switch that has directions on how to use to power led,s or power a frog. Down side is they are more expensive than the latching relay. To use a latching relay (FRT3-SL1 do a Google search) wire red to terminal 1 and 16 green to terminal 2 and 15 the switch part us the same as the Atlas snap relay. Hope this helps.
    Doug

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    Atlas has released a replacement for the push button slider. It resembles the switches on a CTC machine and incorporates LEDs for indicating position.


    http://www.atlasrr.com/trackmisc/57switchcontrol.htm

    It does the same thing as the last design at about three times the price. If strapped for space a single three legged bi-color LED could be substituted for the two in the drawing.
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    Thanks guys! Your information is helpful.

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