@Mike CT posted:
I don't know your trolley control system. Dallee had an additional control for station stop. Without the bumpers, required a trolley with Forward, Neutral, Reverse control system.
It sounded to me as if the OP had a "bump and go" trolley. These which have no e-unit or digital reversing unit. These are simple- a bumper at each end with a mechanical connection to a slide switch in the trolley. AC power from the track is converted to DC by a bridge rectifier in the trolley, which allows reversing by a change in polarity to the DC motor.