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Model Railroading > (DCC) NCE EB-1 and PSX-ARDate: 12/02/19 04:44 (DCC) NCE EB-1 and PSX-AR Author: JUTower Hi all,
I have a NCE DCC system on my HO layout, with two reverse loops protected by PSX-AR Auto Reversers. Each of my power districts is also protected by NCE EB-1 circuit breakers. One of the PSX's is slow to "flip" (reverse polarity) and the other doesn't seem to at all. I realized that the circuit breaker in the PSX-AR may be slower to trip than the EB-1 and have started messing with that. As a byproduct I also realized that the EB-1 was feeding the PSX-AR which is probably not helping matters. I've since fed the PSX-AR directly and next need to try raising the EB-1 trip current. Does anyone have any other suggestions or advice on this? Thanks, -Alex Date: 12/02/19 07:16 Re: (DCC) NCE EB-1 and PSX-AR Author: up9116 I use Digitrax DCC and have six reversing loops on my layout, with six Digitrax auto reversers. On the Digitrax reversers, there is a small set screw to adjust the sensitivity. I have found that you have to play with each auto reverser after installation, adjusting the sensitivity for them to react at the speed you want so a locomotive consist runs through smoothly. I would guess that your NCE system is similar and you will have some sort of method of adjusting the sensitivity. Good luck.
UP9116 Date: 12/02/19 09:14 Re: (DCC) NCE EB-1 and PSX-AR Author: RGDave The PSX-AR should be wired directly to the command station, not through an EB-1 if I recall.
The PSX-AR as you note is adjustable so that is a good next step. Excited to see your railroad come together! ~RGDave https://onondagacutoff.blogspot.com/ Date: 12/02/19 09:19 Re: (DCC) NCE EB-1 and PSX-AR Author: railstiesballast The installation instructions for the AR state that the insulated joints (gaps) should be staggered, not directly across from each other.
I got into a wee bit of trouble with that because my legacy DC reverse loops had joints that were not staggered. Date: 12/03/19 10:20 Re: (DCC) NCE EB-1 and PSX-AR Author: glengui4294 Hello JUTower,
Yes, you are on the right track. Both your PSX-AR's and EB-1's should be connected directly to the NCE command station, the PSX-AR should not pass thru the EB-1. For the Auto Reverser to function correctly, you want the PSX-AR to react to a short BEFORE the EB-1. So, the EB-1 should have a slightly longer delay than the PSX-AR. To change the delay time of a PSX-AR, just change a CV, the manual should walk you thru how to do this on NCE. I don't know how to change the delay on a EB-1, I've never used one. Basically, your DCC system can try to resolve a short in three ways: 1. The PSX-AR can 'flip' to realign mismatched polarity. 2. The PSX-AR can trip can kill power to its section of track. (It is an auto-reverser AND a circuit breaker.) 3. The EB-1 can trip and kill power to its section of track. Also, you want your system to attempt to resolve a short in this order! Good luck. Date: 03/30/20 12:10 Re: (DCC) NCE EB-1 and PSX-AR Author: JUTower Thank you all. I finally got this figured out... and it was the stupidest damn thing!
Here's what I did...
-Alex |