Reply to "Motors stop responding to TMCC commands"

catnapOGR Forum Member

I had a similar issue with an Atlas SD40 that was made in 2006. It has TMCC and EOB speed control.

Every once in awhile the engine would slow to a crawl or come to a complete stop on its own while all of the sounds were audible. Occasionally, when I gave a command with my CAB-2 the horn would sound until I performed a reset (AUX1 + 0).

I emailed Atlas about this and their O scale tech, Bill Seratelli, asked me what my track voltage was. I was running at 19 volts with my PowerHouse 180-watt transformer and LEGACY PowerMaster. He said that would explain why the locomotive would sometimes shutdown on its own. Some of the older TMCC boards cannot handle more than 18 volts.

I reset voltage to 18 and the problem went away. This engine runs flawlessly now that track voltage has been lowered.

11/1/148:04 PM

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