William, you may be seeing a little discussed issue with the timing between DCC Specialties breakers.? Don touched on it, and you'll find mention of it in the PSX-AR manual.? The fix is to program the PSX to delay slightly to allow time for the PSX-AR to properly "reverse" it's polarity.? Done properly, the PSX doesn't see the potential short and shuts down before the AR has a chance to resolve it, which is supposed to happen.? I don't have the docs handy, nor the time to search, but check the AR manual.
Thanks.
John Swanson?
Swanny