Rich: I am using Peco Electofrogs. Bavrail: I have an NCE 5amp ProCab Radio system. The layout is the same as the diagram in the manual - a simple reverse loop with one turnout.
Shortly after my last post I had a win of sorts in that when the Loco approached the turnout the switch motor moved in the WRONG direction. At which point I decided to contact Tony's Train Exchange for support.
Overnight I received a reply from Larry Maier, their Technical Support Specialist (and the designer of the PSX-AR series) who wrote:
"The PSX-ARSC is correctly installed when the reverse loop gaps in the active point route are in phase. For example, if the engine path through the switch is in the Clear (straight) direction, when it gets to the reverse loop gaps, the normal and the reverse section track should be in phase. I suggest you align the switch clear (using the PSX-AR switch address 2044), and then check track polarity all the way into the reverse loop. Do the same for the Throw direction. I suspect that you have a wiring error. The second configuration (Pin 1 of J9 to the "Normal" route and Pin 3 to the Reverse) should work correctly. The fact that the engine stalls indicates there is a short that the PSX can't fix by reversing. The hint is that it works OK if you move the switch points. Any power routing you are doing to the switch should be normal power, and your reverse loop insulators should be at least your longest engine away from any track in the switch that changes polarity when you move the points."
This is a helpful response (at least I now know which pins go to which route) and the manual also makes reference to three (3) Accessory Addresses and the following paragraph:
"(3) The Third address (2044 default) controls the output to the stall motor or dual coil switch machine outputs by using a normal DCC accessory commands for a switch, throw(off) or clear(on) command."
However I have no idea what either Larry or the manual are trying to tell me to do with switch address 2044. There is very little literature (I have all five of MR’s DCC books) on how and what to do with accessory decoders and until I received Larry’s email I did not realise that the PSX-AR was even an accessory decoder. Is 2044 like a Loco address? How do you access it? The NCE ProCab system wants CV values. How do I know what they are? As far as the wiring goes I have tried every permutation I can think of.
I have a second PSX-ARSC and I plan to swap that one over and see if it makes a difference.
Dennis