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 DCC Track Wiring Question For A Crossover Track
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Section Hand

Posted - 02/10/2019 :  7:25:56 PM  Show Profile  Visit man7sell's Homepage  Reply with Quote
I think I may have a problem when wiring my track. I have a part of the track that crosses over from one side of the total loop to the other. Highlighted in the orange circle. Wiring the circle red to the inside track black to the outside. The crossover track would effectively switch this polarity. Or do I not wire this track and let the switches deal with it?

Country: USA | Posts: 63


Premium Member

Posted - 02/11/2019 :  10:02:56 AM  Show Profile  Visit jbvb's Homepage  Reply with Quote
With DCC, anywhere a locomotive can leave a track segment going in one direction and re-enter it going in the other direction,
without hitting the 'reverse' button, needs an "auto-reverser".

On your plan above, the diagonal red line will do this, assuming you've wired the already-built parts of your main loop so the
outside rails (closest to the table edge) are connected to one buss wire and the inside rails to the other.

The turntable will need an auto-reverser too.

Country: USA | Posts: 5711 Go to Top of Page


Posted - 02/11/2019 :  11:13:09 AM  Show Profile  Reply with Quote
James is right. If you go with an AR1 by Digitrax; http://www.digitrax.com/products/autoreversing/ar1/ that will switch your polarity automatically. As far as your turntable goes, if you have an Atlas type turntable with a split ring, it does not need an auto reverser. A lot of turntables to not have this feature, and need the auto reverser installed.
The AR-1 comes with a Tunable Trip Current (TTC). In most cases it never needs adjustment, the AR1 works just fine without any adjustment at all.

Pacific Northwest Logging in the East Coast

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Section Hand

Posted - 02/11/2019 :  11:47:50 AM  Show Profile  Visit man7sell's Homepage  Reply with Quote
Perfect and thanks for the hookup diagram. Luckily all my trains will be short.

Country: USA | Posts: 63 Go to Top of Page
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