Operating track problems

The magnetic coil creates almost, but no quite, a dead short and pulls almost all the current available when the button is pushed. If powered directly, rather than using track power, it should be on it's own power supply.

That's why the instructions for the newer FasTrack uncouplers/control tracks specifically say not to use the 'Accessory' output on the CW-80. There's a good chance the current load would fry the output.

How many times must you ask the same question?

Bruce

The reason for the caution on the CW-80 from this 2008 manual excerpt is because of the improper orientation/relationship of the "A" post(s) to the "B" post(s) on early transformers.  The first versions of the CW had "A" common to "B", and the "U" posts were variable.  The later versions with "U" posts common, with a "G" prefix date code, will work fine with the uncoupling sections wired for constant voltage from the accessory "B" post.  Program the accessory voltage to give satisfactory operation.

When the manual was printed, Lionel was aware of issue with the binding posts, but was in the midst of a fix for it, which resulted in the modified CW.

Continue to heed the warning about extended operation - the wiring for the Fastrack section heats up pretty fast in addition to the plastic on the track itself, and the new controllers, while looking like the old original 1938 style RCS versions, are not nearly as robust.