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Re: Best wiring option for DR5013

 
Edited

Iain and members

thanks for responding- I¡¯ve learned a great deal over the last few weeks. The reverse loop was causing all sorts of issues but in the end the major part was the amount of track that I made part of the loop - so in the end I have just one flank of the triangle. However more importantly I think it was the auto reverse polarity on the boosters - I think in effect I ended up with the DR5013 racing the DR 5033¡¯s to switch polarity! As soon as I disabled the reverse polarity on the boosters things improved no end. Now by using the full capability of the dr5013 it all runs like a dream - you no longer get that momentary short when the loco hits start or end of the reverse loop.
for what it¡¯s worth the other thing I learned was I had one point with a cobalt on in the reverse loop area. I had to rewire this so the switch was used for the frog polarity and the accessory was fed from a bus outside the reverse loop.

hope all that makes some sense- so I¡¯m a happy camper it works fantastically now!! Even got the Z21 app to show the sections on the track plan.

Dave


Re: Best wiring option for DR5013

 

Dave,

You are welcome.?

Glad to hear you got it going!

Ryan


Re: Best wiring option for DR5013

 

Ryan

success! Wired it up as per the diagram and it worked. I was getting concerned about what numbers to use but I realise now you just allocate any numbers not used elsewhere.?

thanks for taking the trouble to reply

Dave


Re: Best wiring option for DR5013

 

Thankyou Ryan. I¡¯m going to have a go at setting up the loop tomorrow and I¡¯ll let you know how I get in. Once I get my head around it I¡¯m sure I¡¯ll be fine. I¡¯ve seen the video - I think I think there¡¯s more to it than there is!


Re: Best wiring option for DR5013

 

Dave,

I did a video on the DR5013.??

You can find it here:?

Let me know if you have any other questions.

Ryan


Re: Best wiring option for DR5013

 

¿ªÔÆÌåÓý

To use it in a wye the most common way is to make a DR5013 controlled reverse section in one of the legs between the 3 turnouts which needs to be long enough to hold a complete train. The other option is to make everything coming from one of the turnouts, including the turnout all part of the DR5013 fed track. This is ideal when going to a dead end branch ¨C you would run the entire branch through the DR5013.

?

Hopefully makes sense, difficult to make drawings in a text document ?

?

Many Thanks

?

W Iain Morrison

07767 456746

?

From: Dave Peters via Groups.Io
Sent: 13 February 2020 18:56
To: [email protected]
Subject: [Digikeijs], JMRI, Rocrail, Itrain, Walthers, Tortise, Cobalt, SwitchMachine, Roco, Throttle Best wiring option for Dr5013

?

[Edited Message Follows]

Hello. I need some help with wiring a reverse loop. I¡¯m running DR5000,2 x DR5033 boosters and DR5013. Now the reverse loop is a triangle not as described in the instructions. Would it be best to simply use the DR5013 as a reverse loop module(as I am currently), or with two sensors. Am I right that this arrangement avoids the short when the loco crosses to the reverse loop track? Then I am confused about how to set it up correctly on the DR5013. The DR5013 becomes the feedback module but despite reading the instructions countless times I still need some guidance.

thanks

Dave

?


Best wiring option for DR5013

 
Edited

Hello. I need some help with wiring a reverse loop. I¡¯m running DR5000,2 x DR5033 boosters and DR5013. Now the reverse loop is a triangle not as described in the instructions. Would it be best to simply use the DR5013 as a reverse loop module(as I am currently), or with two sensors. Am I right that this arrangement avoids the short when the loco crosses to the reverse loop track? Then I am confused about how to set it up correctly on the DR5013. The DR5013 becomes the feedback module but despite reading the instructions countless times I still need some guidance.

thanks

Dave


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Re: Dr Script - Loco Number

 

Hi George, I'm sorry, I can't help you with Dr Script. I have been interested in exploring its capabilities myself but always found the Dr Script documentation a little lacking. I think a few code examples of actual scripts could be a really useful addition to the current Dr Script manual.
Ian


Re: Dr Script - Loco Number

 

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Good morning Ian, with a lot of help from Dennis I¡¯ve got that working. My query was poorly written. What I would like to know: Is it possible to read a Loco Number using a DR5088RC then pass that variable across to a DrScript to control that loco. For example stop a train in hidden staging.

Thanks?
Cheers?
G

George Bryan
Blaxland NSW
Australia?

On 10 Feb 2020, at 12:59 am, Ian <ian.price@...> wrote:

?Hi. I'm not sure if your question was specifically related to obtaining a loco number using 'Dr Script' but I did some testing last year with a DR5088RC connected via a DR5000 to JMRI and was able to identify a loco's address as it passed through occupancy blocks using a JMRI script. The decoder fitted to the loco needs to be Railcom-compatible. I used a Zimo MX644D in my testing.
Ian


Re: Dr Script - Loco Number

 

Hi. I'm not sure if your question was specifically related to obtaining a loco number using 'Dr Script' but I did some testing last year with a DR5088RC connected via a DR5000 to JMRI and was able to identify a loco's address as it passed through occupancy blocks using a JMRI script. The decoder fitted to the loco needs to be Railcom-compatible. I used a Zimo MX644D in my testing.
Ian


Dr Script - Loco Number

 

Has anyone look at loading the Loco Number for a DR5588RC? I¡¯m not sure if it¡¯s even possible.
Cheers
G

George Bryan
Blaxland NSW
Australia


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Re: De sensitise DR4088LN-CS inputs.

 

Detectors will trigger at 1mA or less so a LED, signal, etc. connected to a track will trigger the detector. Even wet ballast or a finger can be detected. The common detectable wheelsets use 10K resistors which is why it has to be sensitive. Normally you don't connect anything but track after the detector. Some of my blocks have turnouts that put a 4k7 resistor across the track when set off the mainline to set signals to stop and proceed if set enter the yard.

Mike


Re: De sensitise DR4088LN-CS inputs.

 

On 15/01/2020 17:19, Jay Lennox wrote:
Colin
What Ryan has done is create a second circuit in parallel with the DR4088LN detector circuit.? This will cause some of the current flowing from the track block to the DR4088LN to go through the resistor and the rest of it to go through the detector circuit, and hence reduce the current going through the detector to avoid false detections. Hopefully, the DR4088LN will only 'detect' when a loco is in the block and drawing significant current.? If you search with 'current in a parallel circuit' on a web browser, you will find articles explaining how this works.
What isn't shown in Ryan's pictures is that you still connect the track output?from the command station/booster through the DR4088LN as you would have without the resistors being in the picture. With the resistors there will be two connections to each of the connectors on the green strips of the DR4088LN - one for the resistor and one from the track block.? The other wire from the track output connects to the common associated with the green connector for the block you are wiring.? This will create parallel circuit for each detection block. You may need to use resistors of different values than Ryan suggests to make the detection work - experimentation may be required for your situation, but start with Ryan's suggested resistor value.
I find that the slightest electronic component across a track will trigger the detector. These range from train tech signals to even the little led circuit detector (not that you keep this on the rail). But it shows what little current triggers the device.

So I wonder what happens when these resistors are strapped across, since there will be a 1k approx path from each block to the others (470 + 470). Depending on what impedance each of the outputs are, there is a chance that a loco in one block could trigger the sensors in others via this back path. It probably depends on the value of the which, as mentioned, is set empirically.

Time to experiment, me thinks.

Maybe Digikeijs could look into providing trimming on each output?

--
Chris


Re: De sensitise DR4088LN-CS inputs.

 

Colin

What Ryan has done is create a second circuit in parallel with the DR4088LN detector circuit.? This will cause some of the current flowing from the track block to the DR4088LN to go through the resistor and the rest of it to go through the detector circuit, and hence reduce the current going through the detector to avoid false detections.? Hopefully, the DR4088LN will only 'detect' when a loco is in the block and drawing significant current.? If you search with 'current in a parallel circuit' on a web browser, you will find articles explaining how this works.

What isn't shown in Ryan's pictures is that you still connect the track output?from the command station/booster through the DR4088LN as you would have without the resistors being in the picture. With the resistors there will be two connections to each of the connectors on the green strips of the DR4088LN - one for the resistor and one from the track block.? The other wire from the track output connects to the common associated with the green connector for the block you are wiring.? This will create parallel circuit for each detection block.? You may need to use resistors of different values than Ryan suggests to make the detection work - experimentation may be required for your situation, but start with Ryan's suggested resistor value.

The very nature of DCC with its square wave alternating current will generate a phantom current in wires to track blocks even when there is no loco present.? There are techniques to minimize this current - look at sources like the 'DCC Wiki' () and 'Wiring for DCC' () for more information on this topic.

I hope this helps.? If anyone else can provide more information on this to Colin, please do.


Re: De sensitise DR4088LN-CS inputs.

 
Edited

Ryan.

Thank you for the reply/solution.

I will try that when I am next able to access the layout which will not be until Friday.

I am interested to know the theory as to why that works.

Colin.