MalcT
Hi, I have a problem that I can't seem to resolve.

I'm using Peco Electrofrog points and have a crossover where one set of points is controlled by a Cobalt IP Digital motor and one set by a SS Surface motor. When the direction is changed the first time a loco crosses the points controlled by the SS motor it creates a 'short' When the 'short' is cleared the loco crosses the points with no problem, then when I change the points direction I get the same situation again, firstly a 'short' then no problem next time.

Any suggestions ?

PS; I have a another crossover set up the same way and there is no problem with the SS controlled points on this one.


Thanks
Malc
MalcT
Quote 0 0
Bunkerbarge
Sounds like the polarity of the frog might be the wrong way round.  Have you tried swapping over the two wires in the Cobalt control unit that supplies the frog?  Labelled Frog Power or SPDT switch. Untitled.jpg 
Quote 0 0
MalcT
Hi BB, yes tried that.. what I can't understand is why the first time the loco crosses the point it 'shorts' clear the short and the next time the loco crosses okay and continue to do every time until I change the point direction, then it's a 'short' first time then ok every other time it negotiates the point. It happens only the once - the first time after switching the point. Totally baffled !!
MalcT
Quote 0 0
Bunkerbarge
I once had a similar sounding problem until I realised I had forgotten to put an isolating fishplate on one of the frog joints.
Quote 0 0
MalcT
Still frustrated, I've taken the point up, checked the wiring and the usual modifications for electrofrog points and still the same problem. I've now ordered another SL-E95 point and will see if that makes any difference.
MalcT
Quote 0 0
Bunkerbarge
I'm sure you've removed the two links so I cannot think what else could be wrong with the point itself.  Unless there is a short on it somewhere, a piece of something conductive stuck across a joint or something.
Quote 0 0