TMCC R2LC Problem/Question

Newt-

Was the replacement R2LC board the same revision (or newer) than the failed board? Were all boards properly seated after swapped?

Can you share the exact model?  It sounds like you lost the serial connection to the sound boards.  If this is the older model with the axle switch, that would match the symptoms.

I think the R2LC-04 is the problem. Need to use at least a C08 code. To me it sounds like a motor driver board rather than a radio board.

Right you are Chuck, I totally glossed over what version he plugged in!  I think that mystery is solved.  I don't quite understand why the older R2LC would fix the issue if it's the motor driver board.  Of course, knowing what the actual product number of this unit is would be really useful...

The reason for the motor driver board is, the poster said the engine would run for a while then stop. To me that doesn't sound like a radio board, but the motor board that overheats and shuts down. To NEWT, does the engine restart after a few minutes then repeats the cycle?

True Chuck, but I took his comment about the R2LC fixing the motor drive issue to heart.  If replacing the R2LC solves the motor drive issues, than I have to wonder if it's really the motor driver.

It certainly could be the radio board, can't rule anything out. But if the problem persists after replacing with the correct radio board, the driver board is where I would go next.

Well, we certainly agree there Chuck, you're running out of things to replace at that point.  The only two logical boards for motor issues are the R2LC and the DCDR (DCDS?)

I had a problem with an ERR AC-DC conversion where it would run about a half loop and then quit. I posted the problem in a thread and got an answer from SANTAFEFAN

"This is a known problem with the R2LC in its latter stages of production.  The driver board is probably fine.  For some reason, the AC common through the wheel sets produce a bit more noise on some locos, which affects the R2LC and it resets. The fix is to use an R4LC, with C08 code.  Please contact Ken at ElectricRR and he will arrange a solution for you."

This was the thread...

https://ogrforum.ogaugerr.com/...-sd40-keeps-stopping

Thanks for all the comments so far. His a bit more information as requested. This is an older Command Equipped Lionel GP-9 6-18879. The engine has had several modifications such as a conversion from an AC Pullmor motor to a DC Can motor. The motor driver was replaced with an ERR CC-M. When the engine stalls, I kill the power with emergency triangle button on the Cab 2. I reapply power and she powers right up, so I don't think anything is overheating. I think I may have a C08 or possible a R4LC that I could swap out from another engine. I'll give this a try tonight and let you know. I have learned a lot from my experiments on this engine. Thanks for the support!

The CC-M upgrade requires a r2lc-c08 version to work correctly.  Its in their documentation.  ERR does offer a r4lc-08.  Lionel has the r2lc-c08.  The ERR version has some additional tweaks for pulmor motors. 

That's the kind of information we could have used before.

Have you reprogrammed the engine using AUX-8 as the engine type code?

I'd be looking at the CC-M at this point, I've had a couple of those that would heat up and then stop functioning.

Wow, You guys are confusing the heck out of me. He stated he had a existing command controlled engine. How does, the CC- M fit in with the issue? 

If , I get this right....some later production r2lc08 had issues. That a r4lc from err

railroad will work at a replacement? Funny, thing...having a similar issue with a legacy subway car. Randomly, stops in a couple of feet. Engine responds to norm etc.  Engine, will not move again unless unpowered of the reset button is hit on the legacy remote.

Thanks to everyone for your suggestions. Problem solved. I replaced the R2LC-06 with a R4LC-08 and my sounds were restored. I ran the engine for about 20 minutes last night with no problems/shut down. The weird thing, I've added the ERR CC-M to older K-Line models and never had an issue with sounds or shut down. Maybe they were outfitted with an 08 board from the factory. Thanks again!!!

Newt posted:

Thanks to everyone for your suggestions. Problem solved. I replaced the R2LC-06 with a R4LC-08 and my sounds were restored. I ran the engine for about 20 minutes last night with no problems/shut down. The weird thing, I've added the ERR CC-M to older K-Line models and never had an issue with sounds or shut down. Maybe they were outfitted with an 08 board from the factory. Thanks again!!!

Ok, so, newt. you had upgraded to ERR -CCMin a D.C. Motored geep. The CCM requires the use of a r2lc08 and the othe err boards R4lc from ERR.

ERR needs to communicate that a little better in their instructions for electrically challenged people like myself. Thanks for the confirmation.

shawn posted:

Ok, so, newt. you had upgraded to ERR -CCMin a D.C. Motored geep. The CCM requires the use of a r2lc08 and the othe err boards R4lc from ERR.

 

Huh? Could you clarify that please? CC-M only requires one or the other radio board, not both/two radio boards.

I think he's saying one or the other.  The CC-M wants to see the C08 version of the R2LC or the R4LC.