BASIC TMCC wiring for a lionel LCRU to work ..?

Antenna. What kind of Locomotive did you install it in?

Hello! I have the antenna wire installed . but I do not have the program wiring . I think thier two or four wires that need to be connected or grounded to the run program switch to make this work? or..  for it to  go to signal mode.. thanks

Going in a postwar  alco 200 series motor single wound field

Two wires to the program switch, for the LCRU, closed is run, open is program.  For the LCRU, closed is program and open is run.  Connect them exactly in the positions shown on the diagram you posted.  Other than the antenna, that's all you need to run in command if it now runs fine in conventional.

For the switch i wired together and it did not respond...

do need to do something with the white wire and black wire saying NC..?

or should of this worked by just jumping both black and violet wires as shown

, it did not respond when all wires where not connected .. just as if in  conventional mode works fine thanks daniel

The white doesn't say N/C, it clearly goes to frame ground, that's what the ground symbol indicates. 

GREAT ..  I did not pick up on that! thanks   does NC mean not connected?

@gunrunnerjohn posted:

Two wires to the program switch, for the LCRU & LCRU2, closed is run, open is program.

That's not the case for the LCRU2. Closed is program.

TRW

So just to be sure on the diagram their are 4 wires I asking about black white violet black

black and violet  either are open or closed base on which unit I have .

white is grounded and the lower black wire in not connected.. correct..? and if I have the antenna wire connected it should find its signal..

Thanks for the correction, when looking at the diagram I was wondering as I see the serial data is on that lead.  I know the original LCRU was backwards from the R2LC.

Yes, NC means don't connect it.

Ok here's  whats happening....

if I disconnect the TMCC base it works fine.. forward  neutral  reverse,

but when I try to connect the 5 pin connector and use only 3 wires and  put teh TMCC bse back on it will not work .

it seems like I'm wiring it wrong  can you tell by the pictures if I'm on the wrong pins or ? thanks the wires I'm holding are the two wires that would go to the switch to run/program..

I have a jumper wire for ground on the LCRU to the chassis of the unit..

Well, one thing you're doing wrong is using the wrong diagram, that's a diagram for the LCRU, not the LCRU-2.

Click on this one to expand it and see if it doesn't work better.

So after I read your post  I was too excited to  program it and forgot I still had the harness from the old set up and one wire only must of grounded ..

Back up  before I tell you what happened... I been making a postwar 224 navy alco set   got the army sound car in the 3665 car and also regarded the alco truck as was done for my GP Milwaukie awhile back .

Well honesty the US Navy would be so happy to see this running and working the US navy  bobber squad  would of gone wild seeing how this (?_ capacitor ? or what ever it is  made a loud crack and honestly a 1/2 inch flame came out! It was so bright you think it  was a cutting torch

Any ways I robbed  the same part form a unit that only works conventional not sure why

If you know the part number or a listing i can buy one I'll fix the other unit I have..

Lesson learned and Ill never forget make sure I have the right schematics!!!!!  (lol) daniel

AND YES I got TMCC control to work..

The part number is visible on your shot, it looks like the smoke triac.

Less than a dollar at Digikey.

https://www.digikey.com/en/pro...hhIkJMiVxAZnHiARnSFA

Thank-you again ..daniel happy thanks-giving ahead 

Im almost done with this project  I need to add the   capacitors on the motor brushes  I read that  the specs should be Non-polarized 1uf, 50v.  would any of the capacitors I have work? same voltage  just different uf readings.

Also I need to add a switch for the run program  next and lastly fix the  LCRU-2 I robed the part form would this work as a replacement? thank-YOU ...daniel

says M0348

        IRF

       630B

Also  can the capacitors be installe in any direction? one side has a stripe? is that  the positive side?

@DanssuperO posted:

Im almost done with this project  I need to add the   capacitors on the motor brushes  I read that  the specs should be Non-polarized 1uf, 50v.  would any of the capacitors I have work? same voltage  just different uf readings.

Also  can the capacitors be installe in any direction? one side has a stripe? is that  the positive side?

You can't use the ones with the stripe, there is no "positive" for an AC motor.  You MUST use non-polarized caps, those will have no stripe.  Also, you don't want to put too much capacitance from the brushes to ground, get the right caps.

@DanssuperO posted:

lastly fix the  LCRU-2 I robed the part form would this work as a replacement? thank-YOU

Not even close, the part you removed was a triac, and this is a MOSFET!

thank-you  Ill order the correct ones ...

@gunrunnerjohn posted:

You can't use the ones with the stripe, there is no "positive" for an AC motor.  You MUST use non-polarized caps, those will have no stripe.  Also, you don't want to put too much capacitance from the brushes to ground, get the right caps.

Not even close, the part you removed was a triac, and this is a MOSFET!

@gunrunnerjohn would 10uf NP caps be too much? What would be the symptoms off "too much?"

George

I've never tried them, but I suspect they certainly won't be the best choice.  I'd stick with the lower value 1uf caps.