I've installed the Digitrax DH156IP decoder in my Genset and the engine ran fine. I made some changes to CV2 and it was still ok. But then I bumped CV6 up to about 20 and the engine ran rough and barely moved. Pushing CV6 up to 150 and it ran fine.
Would the capacitors cause the problem I was having with CV6 set at 20?
john
Soo 61245... Would the capacitors cause the problem I was having with CV6 set at 20?...
Would the capacitors cause the problem I was having with CV6 set at 20?...
I do not know if the capacitor caused the problem in your case. But it is at least very uncommon to have a large capacitor parallel to the motor. Atlas did not explain why they did that unique feature up to now. I monitor the Atlas forum and wait for an explanation.
However, it is save to assume that the designer of the DCC decoder did not expect that capacitor, Some decoders done worry but my two (ESU and Zimo) went havoc. It suggest just to temporary remove one capacitor wire from one side of the terminals at the PCB. It is an easy test and you know if your decoder likes the capacitor or fights it.
Reinhard
Pretty much any decoder with BEMF will be confused by the capacitors as they will not see the expected signal from the motor during the monitoring period. This usually shows up in Bachmann locos which have 1 to 3 small capacitors across the motor for RF supression. The purpose of those large ones Atlas used - I too am waiting to see what the explanation for that is. They're too large to provide much supression of the common frequencies which would cause radio and TV interference.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
Soo 61245 I've installed the Digitrax DH156IP decoder in my Genset and the engine ran fine. I made some changes to CV2 and it was still ok. But then I bumped CV6 up to about 20 and the engine ran rough and barely moved. Pushing CV6 up to 150 and it ran fine. Would the capacitors cause the problem I was having with CV6 set at 20? john
What you did by setting CV6 to 20 is make the medium speed creeping. If you max the throttle it would take off at some point. Typically it is set to half of CV5. From there you set up or down to speed match with other loco's.
Springfield PA
WHat confuses the heck out of peopel is that the CV numbers aren;t in order. After all, in the real world, things have a beginning, middle, and end - in order. But the addition of a midpoint speed CV was an afterthought and isn;t even a requirement for NMRA compliance, so it got tacked on AFTER the others. So the order is CV2, then CV6, then CV5 for start, middle, and max.
But hey, it wouldn't be as much fun it it werer all simple and straightforward.