I have an ESU LokSound v3.5 that developed a fault. It works perfectly going forwards, but there is no drive in reverse and the sounds run away (no load). It currently has sounds for a T9 4-4-0 and is fitted into Hornby model, on which I have not fitted a front coupling, so the need to reverse it is not great but it would be useful on occasions (my layout has continuous runs). I had an idea last night that if I could swap the power feed to the brushes using a switch, I could run in reverse. Then I thought that a physical switch is a bit inconvenient, and woudl require lifting the model simply to get it to go backwards, so I progressed to thinking about an electrical/electronic switch that could be operated by a function output from the decoder. Then the idea hit that even this is getting over-complicated, and all I need to do is reverse the feed through CV29, by adding or subtracting 1 to or from its value. So. the question is, is this possible to do by assigning a function in the decoder? If I could do this, I could simply drive the loco forwards to where it has to pick up a train, then hit a function (let's say, function 4), and it will instantly add 1 to whatever is in CV29. The loco would then move backwards even though the controller still says forwards (I have NCE Power Cabs and Pro Cabs). Any takers? Please note, I am posting this exact text on multiple forums. If you have a solution, it is entirely up to you whether you post answers in all forums (to reach slightly different audiences with some overlap of their citizens), or choose to answer on just one. In that sense, apologies if members of the multiple forums keep seeing the same question. Note also that here in Platform 1 MRC, I have posted this in DCC Sound, but the answer may well also apply to non-sound decoders.
I'm not sure with a NCE hand set you could do that as I don't think you can make up a function macro to access programming on main It may be possible with some of the computer based cam and stations as you could custom wright the code to allow a function button to do what you like. If it's any consolation I have had several ESU Lok Pilots decoders that have lost drive control and both tuned out to be on board issues with the decoder not a programming issue Have you tied to set CV 29 to a odd number you may find it won't change and go in reverse as it's the control of the DC in that direction that is the problem it should still go forward but with the controller set in reverse. Im not totally up with the in's and out's of ESU as I stopped using ESU decoders a few years ago, the number of failed decoder in Locos for repair out number all others by far and no warranty for faulty decoders have even had new one opened package when put on the decoder tester to set up "not even fitted to a model" and was non operational was told that it wasn't waranty as once installed it not there problem. lucky consumer affairs dosnt see it that way. for the guy who purchased it Let us know if someone with Lots of ESU experience comes up with the Answer and we can file for future reference. http://www.click
I fear that what I want may not be possible, but I know it is possible to do things like adjust volumes with function keys - that must involve reprogramming CV63 on ESU LokSounds. I can, of course, reprogram using POM but it is a little long-winded just to get reverse, although I must try that just to see if what you suggested might be the case (regarding not actually getting reverse running).
Problem solved (sort of!). I'm selling it to another modeller, who knows exactly what they are getting but has a specific use for it. I'll probably use the resultant funds towards a new Zimo sound decoder.
I noticed your post whilst on a short holiday, but due to only having my iPhone and intermittent WiFi, couldn't immediately reply. I see you've already found a solution Jeff, but I was wondering if it were possible to reverse the motor connections using a latching double pole 12 volt changeover mini relay operated by one of the functions (green wire maybe?) on the decoder? To be honest, this is just another reason why my personal preference for decoders is Zimo. At least with Zimo's, an exchange decoder is easily and cheaply available (£15 in the UK, perhaps more in Oz?), whereas with ESU's, you're pretty much stuffed if it goes faulty. ESU need to 'up their game' in my opinion, and at least match Zimo warranties! Keith.
Hi Keith. Something like your idea was lurking at the back of my mind too, perhaps using something electronic to do the switching. Another late idea was to use it in a non-directional item such as the forthcoming 4 TC units, but Max, the buyer, also has a non-directional purpose for it so I will cut my losses and sell it ot him, and put the cash towards a Zimo decoder with yet to be decided steam sounds on (maybe another T9, or perhaps the S15 ... ). Cheers, Jeff.
