253 block signal with command control???

It's certainly possible although you may want to install 24 volt bulbs to extend their life if you run on a steady 18 volts command continuously. Or, you could install LED bulbs using much less wattage and generating almost no heat.

Larry D.

Not sure about the question about train speed.  If you remove the power from a TMCC locomotive, it'll be in neutral when it gets power back.

 

Can you be more clear about what exactly you're trying to do?

Would it be possible to wire it through a relay and another power source set to a low voltage so that when then signal drops it would activate the relay to the secondary power source? The secondary power would have to be high enough to keep the TMCC board energized but low enough so the the engine would stall. If done would the low power cause problems with the TMCC circuits or the motors? My current layout is not large enough to try this though this is something that has been on my mind for some time. For the club layout it would have to work for both TMCC and DCS.

Forest

My understanding is that it works for DCS to leave about 8 volts on the track. The engine will stall but remains in command. I have built circuits for people and it works such as stalling a trolleys on a crossover for example until the other one clears it.. However one person warned that it may damage the DCS electronics in the engine though no one who tried it reported damage. You can enter a second power source from a SPDT relay (make-break) as along as the higher and lower voltage taps can not be put in parallel via roller jumping.. Or you can simply route it through the same power source through a series of voltage dropping diodes. See "dropping voltage with diodes" if interested in this method. 

 

http://www.jcstudiosinc.com/Bl...tegoryMain?catId=426

 

I do not know if this method would work with TMCC,as I have not heard reports of anyone trying it. I run conventional myself.

 

Dale H

You could probably get this to work with AC motors and no cruise control with TMCC, just reduce the voltage until the locomotive stalls.  However, I'm guessing for DC motors without without cruise, the electronics will drop out before the locomotive stalls.