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Re: DBL XVR AUTO REVERSERS

Lawrence Varady
 

I have added a turntable AR photo for wiring comments by anyone.
Thx


Photo TT AR1 10-21-21 .jpg uploaded #photo-notice

w4dccqa@groups.io Notification <noreply@...>
 

The following photos have been uploaded to the DBL XVR AUTO REVERSERS album of the w4dccqa@groups.io group.

By: Lawrence Varady <mrmrsv5049@...>


Re: DBL XVR AUTO REVERSERS

Blair
 

Attachments, or embedded images, don't come through.  Please post your image in the photos or files section, and tell us where it is.

Thanks

Blair Smith


On 2021-10-22 16:46, Lawrence Varady wrote:
Is this wiring correct for the dbl xvr shown?
Any comments appreciated.

Thx


DBL XVR AUTO REVERSERS

Lawrence Varady
 

Is this wiring correct for the dbl xvr shown?
Any comments appreciated.

Thx


Re: Reverse Loop Within a Reverse Loop

Appel
 

Thanks Dave.  I will look it up tomorrow!



Re: Reverse Loop Within a Reverse Loop

Dave Hamernik
 


Re: Peco Crossover

Bryan Marino
 

I had a similar problem with a unifrog turnout, found the frog wire was touching one of the feed wires under it. Should have insulated the frog wire before installing it.


Re: Reverse Loop Within a Reverse Loop

Allan AE2V
 

Tom,

You used the word siding.  Does it go anywhere else?  If not, you can probably feed the siding from the same auto reverser (Tam Valley reverses) that powers the loop.  

Allan Gartner
Wiring for DCC


Reverse Loop Within a Reverse Loop

Tom Grassi
 

Hello All,

I have one feeder for both loops 

Each Loop  has a TAM Valley Dual Frog Juicer setup as a Auto reverser.

The reverse loops are working fine.

My question is 

On my one reverse loop  I have a turnout that comes from a siding that is not in the loop.


When  a train enters the siding from the loop all works 

Then problem is when the train leaves the siding I get a short.  So I have a polarity problem.

Is it possible to wire this so I can have the polarity changed  from the siding?

The siding is it own block and has one feeder and is isolated at both ends with insulator joiners on both rails.


If you need more detail let me know.

Thanks

Tom Grassi



Working on my Layout I have two large reverse loops 
--
Tom Grassi
trgrassijr@...


Re: Wiring for DCC Update

 

Thanks Allan,
Greatly appreciate all you do.
- Michael


Wiring for DCC Update

Allan AE2V
 

All,

I have made a couple of additions to the Wiring for DCC Website:

1.  Link to Evan Designs.  They provide a wide variety of miniature LEDs useful to the model railroader.

2.  The new Walthers DCC Friendly turnout.  Very nice!  I featured this turnout in my November 2021 DCC Currents column in Model Railroader.

Both topics can be found in my website at:  https://wiringfordcc.com/wirefordcc_toc.htm#a1

Enjoy!

Allan Gartner
Wiring for DCC


Re: Auto reverse area “dead”

Blair
 

See below.

Blair

On 10/12/2021 10:55 AM, Charles Cauble wrote:
This morning I went through all the steps verifying that the psx-ar is still working correctly. Then I rewired the frog on the left of the peninsula because I didn’t see it blink on the juicer.  It does blink when the loco tries to do the turn out but then the loco stalls and shorts off the power block.  The loco makes it through both peninsula turnouts if they’re left straight but stalls on the left when doing a turnout. The right one works. I also noticed that the psx-ar doesn’t blink when first turned on and does the slow blink once the loco enters the isolated section
Okay, so it reversed the outputs when you entered the section.
but it continues to blink from then on whether you go in or out of the isolated section.
Crossing the same gaps?  Once they're aligned, nothing will change.  But if you mean you are crossing the gaps at one of the other ends of the reversing section, it will depend on whether you're aligned with them or not.  If you've been messing with the wiring, it's hard to tell.  Honestly, you need to give us more details.

I assume that since I proved the chip the current at this stage of my layout does not need reversing again.
That did not make sense.
I’m trying to layout and drop track temporarily to see if my lack of completion on other sections is not reversing on the conflict at the left switch.
And that didn't either.
.......Charles


Re: Auto reverse area “dead”

Charles Cauble
 

This morning I went through all the steps verifying that the psx-ar is still working correctly. Then I rewired the frog on the left of the peninsula because I didn’t see it blink on the juicer.  It does blink when the loco tries to do the turn out but then the loco stalls and shorts off the power block.  The loco makes it through both peninsula turnouts if they’re left straight but stalls on the left when doing a turnout. The right one works. I also noticed that the psx-ar doesn’t blink when first turned on and does the slow blink once the loco enters the isolated section but it continues to blink from then on whether you go in or out of the isolated section. I assume that since I proved the chip the current at this stage of my layout does not need reversing again. I’m trying to layout and drop track temporarily to see if my lack of completion on other sections is not reversing on the conflict at the left switch. 
.......Charles


Re: Auto reverse area “dead”

Blair
 

Charles

You cannot do a reversing section with only one rail isolated.  You MUST isolate both rails at all entry/exit points of the portion to be auto-reversed.  If you've done that, and I misunderstand your report below, I apologize, but dual isolation is an absolute.

Have you done the PSX-AR test, as asked yesterday?


On 2021-10-12 7:41, Charles Cauble wrote:
I have the ar #2 section working now from the curve down through the straight side of the turnout on around the outside edge of the peninsula and up through the other switch.  The inner loop in the peninsula stalls right at the switch as it comes back into the outer loop on that same switch. If I use a metal joiner on the outside leg it shorts that block because the polarities collide but if I use a plastic joiner the engine stalls. I have a frog juicer on the switch so I don’t think it’s the frog but what’s going to switch polarities as it comes back into the turnout?


Re: Auto reverse area “dead”

whmvd
 

Charles,

Both rails need to be isolated at both ends, so that starting from the switch into the loop you see:
- track leading off it, left AND right isolated
- continuous track until, before getting to the switch again, you reach\
- another point where both rails are isolated, and only then do you reach
- the switch again, at its other leg.
What you have is, however you configured it (and I don't know) not correctly isolated with regard to the tgrack, or not correctly wired as far as the AR unit is concerned. The track bus goes into the AR unit (polarity does not matter), its outputs (and NOTHING else) go to the left and right doubly-isolated rail between the two legs of the switch (again, polarity does not matter). Then the AR will correct when a train crosses either one of the divides. If a train is too long and crosses both divides, you have a short again. Same thing if you have two different trains crossing the two different divides at the same time. That's just the way it is. Careful positioning of the isolation is needed so you get maximum ease of use out of the final situation.

Wouter


On Tue, 12 Oct 2021 at 12:41, Charles Cauble <drbeetlebaum@...> wrote:
I have the ar #2 section working now from the curve down through the straight side of the turnout on around the outside edge of the peninsula and up through the other switch.  The inner loop in the peninsula stalls right at the switch as it comes back into the outer loop on that same switch. If I use a metal joiner on the outside leg it shorts that block because the polarities collide but if I use a plastic joiner the engine stalls. I have a frog juicer on the switch so I don’t think it’s the frog but what’s going to switch polarities as it comes back into the turnout?


Re: Auto reverse area “dead”

Charles Cauble
 

I have the ar #2 section working now from the curve down through the straight side of the turnout on around the outside edge of the peninsula and up through the other switch.  The inner loop in the peninsula stalls right at the switch as it comes back into the outer loop on that same switch. If I use a metal joiner on the outside leg it shorts that block because the polarities collide but if I use a plastic joiner the engine stalls. I have a frog juicer on the switch so I don’t think it’s the frog but what’s going to switch polarities as it comes back into the turnout?


Re: Auto reverse area “dead”

Blair
 

And yes, those would be the only two wires to the section.

On 10/11/2021 10:54 AM, Charles Cauble wrote:
I put a jumper J6-1 to J6-2 since I use NCE.  THen I wired it and cut all drops from bus in that section. The lights weren’t on so I traced down a bad connection on the input side and it lit the 2 leds. I’m beginning to think my output wies may not have good connection.  Just to be sure sure, those 2 wires from psx ar are the only power to that section, correct?


Re: Auto reverse area “dead”

Blair
 

I don't have one here, but that's the way I read the instructions on their website.  Have you executed the test on page 3 of the manual?

On 10/11/2021 10:54 AM, Charles Cauble wrote:
I put a jumper J6-1 to J6-2 since I use NCE.  THen I wired it and cut all drops from bus in that section. The lights weren’t on so I traced down a bad connection on the input side and it lit the 2 leds. I’m beginning to think my output wies may not have good connection.  Just to be sure sure, those 2 wires from psx ar are the only power to that section, correct?


Re: Auto reverse area “dead”

Charles Cauble
 

I put a jumper J6-1 to J6-2 since I use NCE.  THen I wired it and cut all drops from bus in that section. The lights weren’t on so I traced down a bad connection on the input side and it lit the 2 leds. I’m beginning to think my output wies may not have good connection.  Just to be sure sure, those 2 wires from psx ar are the only power to that section, correct?


Re: Auto reverse area “dead”

Blair
 

Charles
There really isn't an answer - if you've truly isolated both rails of the indicated track, and each rail is only wired to one of the two outputs of the PSX-AR, and the PSX-AR is indeed receiving input power from the booster, then either
one rail isn't, in fact, wired to the PSX-AR
or the other rail isn't
or the PSX-AR isn't doing it's job.
So, tell us how you tested the PSX-AR, and how you've verified that the PSX-AR has input power.  There has to be something wrong with the testing, or the test interpretation.
Blair

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