good evening everyone, im hoping someone can help me out, i would like to create a control panel for my atlas O switches with track indication but i have no idea how i would wire it , i have searched the forum and the the internet far and wide only to come up with nothing solid any advice is greatly appreciated thanks
Replies sorted oldest to newest
Look at the Atlas 6924 Non-Derail board and use Momentary Closed push buttons. The enclosed pdf shows how to connect the dwarf signal or external leds.
Jan
The 6924 board is probably the best solution, many more options there, but the Atlas #200 snap relay may also be something to consider if you just want some lights at your panel showing switch position. The snap relay should work with the #56 Atlas switch controllers included with the switches.
I attached a couple of wiring info sheets I had for the snap relays that may also be of some help.
thank you guys both very useful information btw do you know what resistors should be used for 18v
Use 470 K Resister should work out with any Led's.
Install the Resister to the positive side of Led's.
Good luck , John
thanks john
NYC,SUBWAY TRANSIT SIGNAL posted:
...Use 470 K Resister should work out with any Led's.
What LED resistor/circuit are you talking about in the PDF links above? 470 K (470,000) Ohms seems an unusually large value resistor for use with an LED at 18V no matter what the circuit. 
stan2004 posted:NYC,SUBWAY TRANSIT SIGNAL posted:
...Use 470 K Resister should work out with any Led's.
What LED resistor/circuit are you talking about in the PDF links above? 470 K (470,000) Ohms seems an unusually large value resistor for use with an LED at 18V no matter what the circuit.
What resistor would you recommend?
I never messed with led and 18v before I'm open to all advice thanks
One more thing guys what kind of switch would should be used DPDT OR SPDT?
For panel indicators from track power, I'd use a 1K resistor. There's no reason to run the LED's at full current for a panel indicator. Also, if you're using Red and Green LED's to indicate the positions, you may want a different value resistor for each to match the intensity, typically you'll need a lower value resistor for the green (higher current) for matching with the red.
If you use the Atlas Snap Relay for your indicators (or even with just the atlas switch), you want a ON-OFF-ON momentary return to center SPDT switch. You do NOT want the switch remaining on an powering the coils once you let go, that kills them quickly.
Not sure of status of this project but it provides LED indication (feedback) of actual turnout position rather than just what the turnout was told to do:
Here's the link to the follow-on post Stan referenced. It has pricing and ordering info as of the end of 2014.
Switch point position detectors
Jan
Access to this requires an OGR Forum Supporting Membership
