mallone Posted May 5, 2018 Share Posted May 5, 2018 Hi all, I have a strange problem with my TTS Class 97.The sound works fine, but when I start the loco off at slow speed, it hares off down the track.I have done a reset on CV8 but to no avail.Any suggestions of a cure for this would be greatly appreciate.john. Link to comment Share on other sites More sharing options...
Howbi Posted May 5, 2018 Share Posted May 5, 2018 It may be what is known as DC runaway.......if your controller is capable you need to check the value of CV29.......it is probably 6 in which case you should reset it to 2.........this will disable DC running........info here... http://www.2mm.org.uk/articles/cv29%20calculator.htm .......HB Link to comment Share on other sites More sharing options...
mallone Posted May 5, 2018 Author Share Posted May 5, 2018 Thanks for that howbiman. I'll give that a try when I get home. I'll let you know how I get on.john. Link to comment Share on other sites More sharing options...
mallone Posted May 5, 2018 Author Share Posted May 5, 2018 Hi howbiman, I've tried your suggestion and yes CV29 was set to 6 so I changed it to 2 but no difference. Thank you for your help and interest.Any other suggestions would be well received.John. Link to comment Share on other sites More sharing options...
Chrissaf Posted May 5, 2018 Share Posted May 5, 2018 Many on here have obtained motor control improvements with TTS decoders by modifying the Motor Algorithm CV150.See below:./media/tinymce_upload/f0274088428e6b3b546e5f0441d5d56d.jpg./media/tinymce_upload/1bf58cde26e46811866ccb3672c21885.jpg. Link to comment Share on other sites More sharing options...
96RAF Posted May 6, 2018 Share Posted May 6, 2018 How is your track linked to your controller and of interest which controller are you using.If you are using a power track or track power clip then is it a DCC one or is it a DC one.Rob Link to comment Share on other sites More sharing options...
mallone Posted May 6, 2018 Author Share Posted May 6, 2018 Thanks Chrissaf, I'll modify the settings as you suggest. Hopefully, this might solve the problem.Many thanks for your reply.John. Link to comment Share on other sites More sharing options...
mallone Posted May 6, 2018 Author Share Posted May 6, 2018 Hi RAF, I'm using eLink with Railmaster. My track is hard wired (soldered) directly from the eLink onto my bus. All links to the track are also soldered to the bus. Thanks for your reply and interest.John. Link to comment Share on other sites More sharing options...
96RAF Posted May 6, 2018 Share Posted May 6, 2018 Thanks for the extra info, each snippet drives another nail in the fault finding process.Rob Link to comment Share on other sites More sharing options...
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