DCC Specialties PSX-AR


William Warren
 

I have hooked this AR in my wye, but I am still having problems. I have insulated both legs of the wye coming out of the wye and leading into (2) Peco #6 Electrofrog turnout back to the main line. on one side the transition is seamless. On the other side when the lead locomotive leaves the leg of the wye and moves across the insulated rail joiners into the #6 turnout the short buzzer on the AR goes off and there is a momentary pause in the consist as the locomotives leave the wye leg and enter the mainline. It only happens one that one side not the other. I am stumped to trouble shoot to solve the problem. 

Any and all help will be appreciated.

William Warren


Paul O
 

William, are you feeding the input of the auto reverser from a circuit breaker?
I had a similar problem with that type of connection. Try feeding the auto reverser directly from your DCC power supply.

Paul O


William Warren
 

The power for the AR is coming from the NCE Power Pro Booster directly. The power for the mainline Peco #6 is coming from a DCC Specialties circuit breaker.


Don Vollrath
 

I suspect that the mainline circuit breaker is tripping. Temporarily bypass that breaker to see if the psx-ar then allows entrance and exit into the wye from either path. If that works the issue is most likely a timing race between breakers. If that doesn’t work suspect faulty wiring or an isolating gap that is not isolated.


DonV


Swanny
 

William, you may be seeing a little discussed issue with the timing between DCC Specialties breakers.  Don touched on it, and you'll find mention of it in the PSX-AR manual.  The fix is to program the PSX to delay slightly to allow time for the PSX-AR to properly "reverse" it's polarity.  Done properly, the PSX doesn't see the potential short and shuts down before the AR has a chance to resolve it, which is supposed to happen.  I don't have the docs handy, nor the time to search, but check the AR manual.
Thanks.
John Swanson 


Jim Betz
 

William,
  Check the trip current settings (jumpers).  If different change them to
the same, if same change one to less than the other.  This sounds
like one of the breakers is seeing the boundary crossing as a short
for a bit and then 'getting it right'.
  Have you tested this with a loco with sound?  With a keep alive?
Is the keep alive working correctly (do a quarter test)?
                                                                                         - Jim


William Warren
 

Don and to All,

That is the exact problem that I am having. The locomotives travel through the leg of the wye and enter the #6 turnout and set the buzzer off then proceed to the mainline. When then locomotives leave the mainline, travel through the #6 turnout and enter the leg of the wye, it is a seamless transition. Don, how do I bypass the circuit breaker for the mainline that trips and how do I adjust the timing on the AR so it resets in time not to set off the buzzer? I have a VERY hard time reading manuals and then following what they say to do.. I am a watcher and copier person. If I watch you do it, then I can do it.  

On Fri, Apr 2, 2021 at 9:17 AM Don Vollrath <donevol43@...> wrote:
I suspect that the mainline circuit breaker is tripping. Temporarily bypass that breaker to see if the psx-ar then allows entrance and exit into the wye from either path. If that works the issue is most likely a timing race between breakers. If that doesn’t work suspect faulty wiring or an isolating gap that is not isolated.


DonV





Don Vollrath
 

Re- bypassing a circuit breaker...
Remove the 2 wires from the OUTPUT/TRACK side of the breaker and connect them to the power Input wires of the breaker. Be sure to get the polarity correct to avoid problems at other power districts boundaries.

Technobabble- note that the AR unit will almost always power up with the same polarity result, provided no conflict at isolating gaps. This means that the polarity of the AR section will always be the same after each booster power up and match that same entrance end. So you could more easily reverse the AR section wires to demonstrate that the issue now occurs at the opposite end and that the AR section wiring works as expected.

DonV


Aaron Splawn
 

William, 

I just dealt with something similar installing an AR on my Sn3 layout.  First I tried a Tam Valley Dual Frog Juicer, and then I bought the PSX-AR.  Both of them malfunctioned by causing a complete short when crossing into the isolated reversing area.  After losing a bunch of sleep and pulling out all my hair, I discovered one of the wye frogs was wired incorrectly.  Once I corrected this it worked perfectly with a single loco.  So good that I tried the Frog Juicer again and it also worked perfectly with a single loco.  However, once I started running trains (anything more than 4 cars) it suddenly started doing exactly what you're describing as the train spanned the isolated reversing portion of the wye.  I've discovered the isolated reversing gaps are too close together and when any additional cars are outside the isolated area it shorts momentarily until the last cars passes the gap on the other side.  All of my cars have metal wheels and I only run small trains, however, I'd like to run a little bit more than a 4 car train.  This led to the question I posted to the group last night about how close the isolation gaps can be moved towards the turnouts without causing a different problem when a loco or cars are running over the reversing gaps and turnout frogs at the same time. 

Hopefully this helps narrow down your problem.  I know exactly how frustrated you feel...!

Aaron Splawn (Roseville, Ca. )