tonyw5460 Posted September 5, 2020 Share Posted September 5, 2020 I have a question on whether or not you can use the GM500 to control points and polarity on a DCC system. I know that GM do the GM500D for DCC & Digital but i can not see much of a difference in the tw0 products. I know that the 500 version is specifically designed for use with a CDU but i am not using CDU's. I have asked GM the difference question but they were not very helpful and very none committal. What I am looking to do is control the polarity of a pair of points operating in tandem through a complex track switching arrangement (see picture) that uses 1 Peco Code 55 set of Scissor crossings and four sets of unifrog points in tandem. NOTE the scissor crossing has also be adapted to make it more of a Unifrog compliant. I am happy with the track design just trying to reduce the wiring etc and improve the polarity switching. I have attached a picture of the junction. Looking forward to some response on this please specifically about the GM500 and its compatibility with DCC. Tony Link to post Share on other sites More sharing options...
RMweb Gold RFS Posted September 5, 2020 RMweb Gold Share Posted September 5, 2020 Are you going to be operating the turnout motors via DCC or via conventional DC system? If via DCC then you need the GM500D, otherwise use the GM500 with DC. Link to post Share on other sites More sharing options...
tonyw5460 Posted September 5, 2020 Author Share Posted September 5, 2020 Robert Thanks The point motors will be controlled via a Lenz 150 point decoder. So I assume the 500D's are a must then? What I cant see is the difference between the 500 and the 500D as all the components are the same. or am i missing something?? Link to post Share on other sites More sharing options...
RMweb Gold RFS Posted September 5, 2020 RMweb Gold Share Posted September 5, 2020 For the LS150 you definitely need the GM500D. The two versions are wired differently. Link to post Share on other sites More sharing options...
tonyw5460 Posted September 5, 2020 Author Share Posted September 5, 2020 OK thanks Tony Link to post Share on other sites More sharing options...
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