swiftbeam Posted October 2, 2017 Share Posted October 2, 2017 Hi, Short story super short, I have a DJ Models 14xx that ran very poorly on Zimo DCC. I rang Hattons and asked why, coreless motor was the reason. They gave me some CV settings to program in to stop it, they WORKED !!! HERE THEY ARE :-) CV5 TO 255 CV6 TO 128 CV49 TO 17 CV51 TO 0 CV52 TO 0 CV53 TO 140 CV54 TO 40 CV55 TO 28 CV56 TO 255 CV124 TO 4 Now she is smoooooooooth :-) Hopefully helps somebody :-) Rob. Link to post Share on other sites More sharing options...
RMweb Premium ELTEL Posted October 2, 2017 RMweb Premium Share Posted October 2, 2017 Cheers I'll give it a try Eltel Link to post Share on other sites More sharing options...
tender Posted October 2, 2017 Share Posted October 2, 2017 (edited) The only CV from your list that would have any influence on poor running on a Zimo chip is CV56 (Back EMF control) but the value given (255) is outside the range (0-199) Maybe it has defaulted to the maximum value of 199. Values 100-199 are specifically for coreless motors. Cv49-55 are used with the Zimo HLU or ABC braking. CV5,6 are the speed curve CV124=4 sets F7 to half speed shunting. Are you sure its a Zimo chip? If it is then the only one from your list worth changing for poor running is CV56. (Hattons are listing a Bachmann 36-586 for the 14xx which i think is a rebadged Zimo MX622N) Edited October 2, 2017 by tender Link to post Share on other sites More sharing options...
swiftbeam Posted October 2, 2017 Author Share Posted October 2, 2017 This is what my controller says when asked to read CV56, and this is the pack the decoder came in from Digitrains. I assume it is a new Zimo as that's what I paid for and it came in a Zimo box. Link to post Share on other sites More sharing options...
tender Posted October 2, 2017 Share Posted October 2, 2017 OK so it's defiantly a Zimo. This is an extract from the Zimo manual for CV56, under the range heading (missing from the picture) the range is given as 1-199. I don't know what effect setting it to 255 (outside the range) would have but it might be worth playing around with it or at least trying the max value of 199 or 155? But then again if it works for you, leave it alone. Link to post Share on other sites More sharing options...
swiftbeam Posted October 2, 2017 Author Share Posted October 2, 2017 I bought 8 Zimo decoders all at the same time and did a mass conversion in one day. Non of the decoders came with anything more than the paper insert above. I have changed CV56 to 199 and it is just as smooth. 1 Link to post Share on other sites More sharing options...
tender Posted October 2, 2017 Share Posted October 2, 2017 Yeh, you have to go on-line for the manual, even then the English version isn't the latest. http://www.zimo.at/web2010/documents/MX-KleineDecoder_E.pdf It doesn't make for an easy read. Link to post Share on other sites More sharing options...
swiftbeam Posted October 2, 2017 Author Share Posted October 2, 2017 (edited) Oh well, I just asked the shop that sold me the model, and that list was what they gave me. The model is now smooth (cv56 at 199). Edited October 2, 2017 by swiftbeam Link to post Share on other sites More sharing options...
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