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4088LN permanently detects Lodi auto reverse module


 

Hi,

Following on from the problem on my turntable with a DR5033 (almost certainly faulty and not auto reversing)??I bought a Lodi reverse module.? The reverse? module was tested on the turntable on the layout without an occupancy detector wired in and works a treat!!? Excellent.

However, not so good with occupancy detection.

With all turntable connections to Lodi Track Out terminals removed so no occupancy signal is possible, and one feed from common bus wire connected to the Lodi Track In terminal, as soon as a 4088LN is connected to the other Track In terminal the detection circuit activates with the little red LED flickering.? I also used the dr5000 to confirm the detection circuit is triggered with the tick mark appearing in the appropriate address box as soon a power is applied.

The instructions? show the Lodi Track In terminals connected to the occupancy detector and the common bus, so am I doing something wrong or is it bad luck and the Lodi module is faulty??

Regards,

John


 

Pretty logical behaviour...

?

The LoDi takes samples from the track power, that causes a current to flow. Hence it triggers the DR4088LN which has very sensitive inputs.

?

How to solve:

1) Connect the DR4088LN completely with one half ( one C and 8 inputs ) on 1 of these inputs behind !! the LoDi output ( so between the LoDi and the TT-Bridge )

2) Reduce the DR4088LN sensitivity by shunting the input with a resistor of 270 - 4700 Ohms between input and "C".

?

Greets,

Karst


 

Thanks Karst.? Will try that.

Regards,

John


 

Have you switched off the LED using the DIP switch? This draws enough current when it is idle to cause the feedback to trip and show occupancy. These modules are not meant to cause the feedback to show occupancy when they are idle, i.e. nothing on the track.


 

Thanks for the tip Iain , I will do that.

Regards,? John


 

Fixed!!? All now working well.? Thanks to you both for your help and advice.

Regards,

John


 

John

What did you do to sort it?

On Fri, 21 Jul 2023 at 10:59, j.pollard4 via <j.pollard4=[email protected]> wrote:
Fixed!!? All now working well.? Thanks to you both for your help and advice.

Regards,

John

--

Many Thanks

Iain Morrison


 
Edited

¿ªÔÆÌåÓý

I am guessing he set the dip switches as you suggested.

?

?



James Hudson

Director

?

01823 429309

Unit 15, Bowdens Farm, Hambridge, Somerset, TA10 0BP

This email and any files transmitted?with it are confidential and intended?solely for the use of the individual or?entity to whom they are addressed.?This message contains confidential?information and is intended only for?the individual named. If you are not?the named addressee you should not?disseminate, distribute or copy this e-mail. Please notify the sender?immediately by e-mail if you have?received this e-mail by mistake and?delete this e-mail from your system. If?you are not the intended recipient you?are notified that disclosing, copying,?distributing or taking any action in?reliance on the contents of this?information is strictly prohibited.

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From: [email protected] <[email protected]> On Behalf Of Iain Morrison via groups.io
Sent: Friday, July 21, 2023 11:00 AM
To: [email protected]
Subject: Re: YaMoRC, Digikeijs, JMRI, English 4088LN permanently detects Lodi auto reverse module

?

John

?

What did you do to sort it?

?

On Fri, 21 Jul 2023 at 10:59, j.pollard4 via <j.pollard4=[email protected]> wrote:

Fixed!!? All now working well.? Thanks to you both for your help and advice.

Regards,

John

--


Many Thanks

Iain Morrison


 
Edited

James, I am hoping that is all he did - Karst had also suggested shunt resistors hence asking which solved the issue

Iain

On Fri, 21 Jul 2023 at 11:01, James <James@...> wrote:

I am guessing he set the dip switches as you suggested.

?

?



James Hudson

Director

?

01823 429309

Unit 15, Bowdens Farm, Hambridge, Somerset, TA10 0BP

This email and any files transmitted?with it are confidential and intended?solely for the use of the individual or?entity to whom they are addressed.?This message contains confidential?information and is intended only for?the individual named. If you are not?the named addressee you should not?disseminate, distribute or copy this e-mail. Please notify the sender?immediately by e-mail if you have?received this e-mail by mistake and?delete this e-mail from your system. If?you are not the intended recipient you?are notified that disclosing, copying,?distributing or taking any action in?reliance on the contents of this?information is strictly prohibited.

?

?

?

From: [email protected] <[email protected]> On Behalf Of Iain Morrison via
Sent: Friday, July 21, 2023 11:00 AM
To: [email protected]
Subject: Re: YaMoRC, Digikeijs, JMRI, English 4088LN permanently detects Lodi auto reverse module

?

John

?

What did you do to sort it?

?

On Fri, 21 Jul 2023 at 10:59, j.pollard4 via <j.pollard4=[email protected]> wrote:

Fixed!!? All now working well.? Thanks to you both for your help and advice.

Regards,

John

--


Many Thanks

Iain Morrison

--

Many Thanks

Iain Morrison


 

Dip switches.

John


 

Hi James,

Off topic so I hope I don't get moderated but do you know when the yamorc wifi modules will be back in stock with yourself.

Regards,

John