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Wiring Atlas No.8 switch and tortise switch machine

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  • Member since
    July 2006
  • 156 posts
Wiring Atlas No.8 switch and tortise switch machine
Posted by crisco1 on Sunday, August 7, 2022 2:59 PM

How do I wire an Atlas No. 8 switch and a tortise switch machine for a DCC layout?

  • Member since
    August 2003
  • From: Collinwood, Ohio, USA
  • 16,367 posts
Posted by gmpullman on Sunday, August 7, 2022 4:19 PM

Does this help?

https://dccwiki.com/Turnout

    — and for the operation (switching) of the points:

https://dccwiki.com/Turnout_Motors

Good luck, Ed

  • Member since
    August 2006
  • 62 posts
Posted by santafejeff on Tuesday, August 9, 2022 8:20 PM

Kind of a vague question. If you just want the tortoise to switch the points, connect 12v power to pin 1 and 8 on the tortoise, wire it to a switch to reverse the throw and be done with it. 

If you want to control panel lights, there a number of ways to do it. The wiring for that is easy if you understand what Im about to say. I cant post pics but this is what I do. 

First, I use edge connectors to wire the tortoise pins:

Pin#1 12v, pin#8 12v, these two wires come from a dpdt switch

On the switch there are two rows of 3 pins. The corners get crosswired to each other and one set get 12v power as well, the two ctr pins go to the tortoise #1 and #8 respectively. This will cause the polarity to change and throw the points when the panel switch is moved. 

Pin#2 gets jumpered to pin #7 and pin #3 gets jumpered to pin #6. #6 and #7 also go to a 12v source such as a block panel, this will power the internal spdt switches in the tortoise. Pins #4 and #5 get lights wired to them. I use leds with built in resistors and put them on the panel for route indication. I use red and green, pretty common color choice. After its all hooked up, when you throw the panel toggle switch the colors will alternate to show the route. I personally use 4 leds per tortoise for my panels so the is always positive green or red color indication. I will look in my gallery to see if there is a website that I got the diagram from and edit this post so you can have it. 

Sorry, no site mentioned in the diagram I have. Also, with 4 leds, when you come off pins 4 and 5 on the tortoise, your leds will have be wired in series I think. Positive from one to negative of the other connect to #4, positive from one, negative from the other to pin #5. I hope this makes sense. Once youve done it a few times, its really a no brainer. Also, the leds dont have to go to a panel. They can go to a dwarf signal, a mast target or wherever you want the visual indication to be. Just make sure you have ebough wire to get it there. I use cat 5 or 6 phone cable. Its like 4 pairs of wires in the insulation and 24 or 28 gauge. Works great. 

 

  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Wednesday, August 10, 2022 5:26 AM

You can go on the Circuitron website and there you will find several diagrams on wiring the Tortoise to a  turnout.

http://www.circuitron.com/index_files/INS/800-6000ins.pdf

Rich

Alton Junction

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