RailPro > RailPro Specific Help & Discussion
USA Trains SD40-2 LM-4S-G installation
gregeusa:
I have no idea what the input limits of the PWR-56 are.
I am NOT recommending changing the power supply to it, I will defer to RailPro on what you can give to it.
Remember (and someone correct me if I am wrong), the PWR-56 supplies power to the rails AND it functions as a repeater (this is a mesh network).
So I would say you power the rails with higher voltage and current AS LONG AS the setting of max current function will work.
Again, it's not clear to me how that setting works... hopefully it is completely independent of the DC output of the PWR-56
Greg
Gino:
Well the light just went on!
I just figured it out that the PA-2 is used to supply DC power to the rails and the PWR-56 is used as a repeater (and I am sue other stuff too). So in theory I could use an independent filtered DC power supply with a higher voltage and short circuit protection, not to exceed the input voltage of the LM-3S-G and LM-4S-G modules, to run the locomotives on the layout. I would use the PA-2 to power the PWR-56 as a repeater and all the other accessory modules.
My only concern is losing the short circuit feature. Not sure if the short circuit protection is only with the PA-2 or also part of the Radio System.
Have to do more research to confirm.
Gibs:
First off you're at the wrong voltage, you need to be between 18V - 24/30V for the G scale LM3/4 respectively.
Since Volts and Amps are an inverse relationship for the given Wattage of a PSU, you need to up the voltage of PSU to match you intended usage. Not until that's done will you be able to set a CORRECT MAX Amp draw.
As to what the Max voltage input for the PWR-56 is, I can't recall and I'm not at home to look it up for you.
William Brillinger:
The PWR-56 is not intended for use with G scale modules. You need to provide power from a separate power supply that is in the correct ranges.
gregeusa:
We all agree about the higher voltage to the loco.
But is there any specification as to the max input voltage of the PWR-56?
For some G scale installations lower than 24 volts will be fine.
It is NOT necessary to supply power to match the MAXIMUM ratings of the LM-4S-G, what is needed here is to match the current and voltage requirements of the USA Trains loco (as long as the rest of the system can handle it).
If you were running only small LGB steam locos, where the prototype rarely went over 35 miles per hour, the PWR-56 might be fine.
Greg
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