I have a MRC Slo motion Switch power supply and the tortoise switch motors. I am reading the instructions and i am getting confused. I have the DPDT switches and my issue is the MRC power supply has three wires and the instructions show the DC adapter having 2 wires. Can i please get some help on wiring? I am not good with electrical stuff, so if some can give me a step by step with the wiring or explain how, you would be a life saver.
Thanks
Sean
Sean,
The MRC power supply is + and - 12vdc
MRC Tortoise Switch Power SupplySlow motion or latching switch machines add to a layout's realism, but until now, you needed two DC power supplies for the +12/-12 dual voltage. Now, all you need is one Slow Motion Switch Power Supply and hook-up is quick and simple.
Your Tortoise instructions should have included the wiring section which discusses the following:
2. BI-POLAR DC WITH SPDT SWITCHES: This system requires two similar DC supplies ofnot more than 12 volts each. They are wired in series with the (+) of one supply connected to the ( - ) of the other supply. This common connection feeds a bus wire that runs around the entire layout. One of the motor connections from each TORTOISE connects to this bus. Single pole switches connect either the (+) supply or the ( - ) supply to the single wire that runs from the panel to the remaining TORTOISE motor connection. This system offers simplified wiring and the use of lower cost SPDT switches for control. This is offset slightly by the increased cost of the two supplies. See Diagram 2 below.
The only difference is that the single MRC power supply does the same thing as the two individual power supplies shown in the Tortoise drawing. You only need to use one set of contacts on your DPDT switches that you already have (essentially just SPDT).
Your MRC instructions should say which wire is which (by color I assume): +12vdc, -12vdc, and common.
I hope this helps.-John
p.s. Here is a PDF version of the Tortoise instructions:
http://www.tonystrains.com/download/man-tortoise.pdf
Like he said, use only one side of your DPDT switches to turn them into SPST switches. Here is a quick and dirty JPG on how to wire it.
With Tortoise control out of the way, you now have an extra set of contacts on each DPDT switch. This opens the way for route indicators on your control panel at the cost of the indicators themselves, a few resistors (if using LEDs) and a couple of feet of wire.
Chuck (modeling Central Japan in September, 1964)
I am still not getting this right, The wires are not labeled so I have no Idea. There is no instructions or wire labels with the MRC adapter. I have wired everything up but the tortoise will only move when I re-arrange the wires connected to the tortoise. I have this set up as in the picture above but when I move the toggle nothing happens only the tortoise hums. Can someone explain what I am doing wrong? Please. Either I have the wiring wrong or somthing is not right.
Which is the common?
Red wire
Black wire
White wire
And as per MRC...
" Slow motion or latching switch machines add to a layout's realism, but until now, you needed two DC power supplies for the +12/-12 dual voltage. Now, all you need is one Slow Motion Switch Power Supply and hook-up is quick and simple. "
Do you have an OHM meter or get acces to an OHM meter?. Mesure the leads till you determine who is 12V- and who is 12V+ and common if they did not bother to put it in the instructions.
Wild guess; black is common, red is +12V, white is -12V
GTX765 wrote: ... Sorry I am ignorant in wiring
... Sorry I am ignorant in wiring
We all were at some point. No need to be sorry thow ;-)