The lower set of contacts are the limit switches, and cut the supply to the motor when it has finished its traverse. The upper auxiliary set of contacts operate slightly before the lower set.
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Fulgurex point motors are rated at approx 200mA. They tend to be a bit fierce when operated in their official 10 to 14V range, and are quite happy with a more modest voltage.
A single potential supply connects via a DPDT switch to the point motor. The point motor will operate irrespective of the polarity of the supply. In the diagrams below however, a particular polarity is used to show how the point motor operates. |
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The lower set of contacts are the limit switches, and cut the supply to the motor when it has finished its traverse. The upper auxiliary set of contacts operate slightly before the lower set. |
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| Two Fulgurex point motors can be wired up, using one set of auxiliary contacts on each unit, to act sequentially rather than simultaneously from a single DPDT switch. |
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