gunrunnerjohn posted:texastrain posted:John, I have the generic CCM as I used in the K Line Berk. I believe I will use this in my K Line Rock Island E8s AA units so they can maintain when pulling the CZ consist. As for serial from the CCM, I will try the output from pin 1 to 24, and from 24 Motherboard to pin 2 on the CCM. The manual for the CCM states it is good for multiple cans. But, I am rethinking due to possible overloading. I know the label states 6.0 amps, but the manual says it is good for 8.0 amps.
The K-Line E8 A-A is actually one I tried to add the CC-M to and power all four motors. It doesn't work well, and I finally turned the trailing unit into a dummy to solve the poor speed control. OTOH, I have done several other A-A configurations and the CC-M handled all four motors with no problem. It seems somewhat hit or miss. FWIW, Jon Z., the guy that designed this, suggested that four motors was too much for the CC-M, and I'd have poor speed control. He was exactly right in this case.
Your experience here is why I went with a CCM in both engines. I was able to drive both with a single R2LC without additional buffering which might be a comment on how much current a IR LED draws.
To do this a 10 pin tether had to be used to handle the 3 (minimum) direction signals, serial data, lights and couplers.
The other option is two Cruise Commanders of course.
FWIW both engines running light draw less than 2 amps. Maybe the problem trying to drive 4 motors is it confuses the back EMF logic rather than current overload.
Pete
