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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 |
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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 |
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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. --
Many Thanks Iain Morrison |
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¿ªÔÆÌåÓýI am guessing he set the dip switches as you suggested. ? ?
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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:
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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:
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Many Thanks Iain Morrison |
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