This is a continuation of my effort to develop the wiring schematic for my layout to make sure my ideas will really work. My earlier posts looked at the overall wiring schematic with emphasis on the DZ-2500 switch machine set up for both manual and command control. There are plenty of schematics for DZ-2500 installations as well as the similar DZ-1000. The problem is there is no one schematic that shows all the functions I want: Command Control through the Legacy base using the DZ-2001 Data Wire Driver, manual operation using a DZ-2502 controller button, non-derailing, and using the DZ-1008 relay on my #6 and #8 switches to alternate power on the lead rails to prevent my smaller engines from stalling on the switch. I am using the 14 VAC accessory output of a Z-1000 brick to power everything; I can use the full Z-1000 transformer if higher voltage is needed. All track power (TPC400s and TIUs) will be from PH180 bricks; the Z-1000 will power only the switches.
This post takes a look at a crossover using #6 switches. The attached picture of the schematic only covers the crossover; all other parts of the electrical system have been removed. If you are interested in how I hooked up the TIUs and TPCs, please see my thread last week on wiring the DZ-2500.
Here are my thoughts:
- I will program both switch machines with the same TMCC address so they will both function at the same time. I will run each switch machine’s blue wire out to the DZ-2001’s white wire that runs around the entire layout.
- The non-derailing function does not use the DZ-1008 relay. I have hooked up the green and yellow wires from both the switch machines to common isolated rail sections on the switches. There is an argument that the crossover connection does not need to be used since both switches SHOULD activate at the same time. Since some forum members have mentioned the DZ-2500 does not always function I put this in as a safety measure.
- The white wire from each switch machine will be connected to the white wire of the DZ-2502 button.
- The DZ-1008 relay will be used to alternate power on the lead rails of both switches. The green and yellow wires will be connected to the green and yellow wires of the switch machines. Track power for the lead rails will come from the blue wire connected to the center rail of the track. Since I will operate in command mode 99% of the time, track power will be 18 volts. The relay will alternate power to the appropriate lead rail through the gray and white wires. I may have to do some trial and error to make sure the correct lead rail is powered for switch direction.
Wire connections in the drawing are shown by the dots, and the isolated track sections are shown by the gaps in the rail. Any comments, especially pointing out the flaws, would be appreciated. Thanks. Ron
