Thought a post to Electrical Forum might be helpful. In short my 6924's, six of them, randomly trigger and sometimes one after another. After much troubleshooting I discovers this last night: rolling a lighted MTH Cabosse back and forth on any section of track produces the triggering just like train engine. Doing this with just a freight car, no electrical rollers, produces no effect. At this point I can only surmise that the rollers randomly build up some kind of positive or negative charge this triggering the switches.
Here is what I have:
Atlas 21st Century 3 Rail track w/middle black rail
15 Atlas Switches: 6 are wired up to date using 6, 6924's.
Atlas #57 Switch Controllers.
4 Loops that are each controlled by 2 KW's.
Each loop has middle insulated rail at beginning and end so as to run independently.
Each loop has is own loop of Black & Red wiring under the table. Feeders wires, one power and one common are located every 3-4 feet. 12 x 5.5 layout.
Loop A to D is respectively wires to KW A/U, B/U posts. 2 KW's phased.
Atlas Switch power is wired to Accessory post & a U-common post of wither A or B.
SEE PICTURES on my Atlas 6924 posts.
To simply for troubleshooting: I'm only using 1, KW, A & B loops.
Per above MTH Caboose trigger test something is up with power rail...maybe U-Common to. Remember that a freight car produces no effect.....so..something is up with the pickup roller/3rd rail relationship.
That's it! Steve and Mike CT have been super helpful is getting things running. The above issue is a tricky one but I'm sure solvable.
MARK B.
N. CA 'O' Scale & OGR Enthusiast
Cell: 707.338.8659. Call or Text.
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