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Wiring Reversing Loops and Sections
The autoreverse features of the ZoneMaster boosters make for easy wiring of a simple reverse
loop. For the diagram below, a ZoneMaster Dual Output booster is used. Output A is set for
autoreversing. Output B drives the adjacent power zone. Gaps are cut into the rails just after the
turnout.
Autoreverse works by sensing a momentary short circuit as a wheel bridges the gap between the
reversing block and the adjacent block. Within a fraction of a second, the booster reverses the
track polarity. If the short clears, the train continues across the gap. If the short is still present, the
autoreverse booster shuts down and sounds the fault alarm.
It is mandatory that the entire train fits inside the reversing loop or reversing section. If not, the
autoreverse will not work correctly.
Reversing
Loop or
Section shown
in gray
Gaps
Gaps