Alex,
This is a great switch and it solved a yard switching issue that I had. I have not yet fully installed it, but I expect it to perform very well like all my other Ross switches. The switches on this Ross double crossover (DX) are #4.
William,
If the DX switch is wired properly, you should not have any problems with the DZ-1008 relay. Below is the diagram I’m using to wire my #4 DX (the PowerPoint file is also included). I’m using DZ-2500 switch machines while Alex is using DZ-1000 switch machines, but the basic wiring is the same.
The problem is making sure the diamond outside rails of the two crossing tracks are powered correctly. This is done using the master switch in the lower right. When the master (and #2) switch is set for straight (not crossover), the white wire (dotted blue in diagram) from the relay is AC positive energized (center rail power) and allows trains to cross between #3 and #4 switches. When the master (and #2) switch is set for crossing, the gray wire from the relay is energized allowing trains to cross between the master and #2 switches. The position of the #3 and #4 switches have no effect on this.
If all four switches are set for crossover, this would mean the gray wire is energized and a train going between #3 and #4 switches will cause a short as soon as it hits the diamond. To prevent this, the green wire acts as a non-derailing input to the master switch and when a train going between the 3# and #4 switches hits those rails, it sets the master (and #2) switch to straight and all is well.
I did a quick test of this wiring setup but without the green wire when I first got the switch, but it should work. If you don’t think it works this way, let me know.
UPDATE: I mistakenly used an older file. I've updated the correct files.