Decoder System Design

Multiple Solenoids from One Decoder Output

A maximum of 2 Hunter standard solenoids can be connected to a decoder output.

The multi-station decoders can also have 2 solenoids per output, but the amount of outputs that will activate simultaneously on a decoder depends on the available voltage at that point in the two-wire path. The cable design formulas are used to factor in the distance from the controller to the decoder, the Power Factor setting of the decoder, and the number of solenoids connected to the decoder. ACC controllers are designed to handle 14 simultaneous active solenoids (up to 2 per station, plus 2 PMV outputs). Use the formulas to design the maximum wire length with the worst-case number of simultaneous solenoids active, when in doubt. 

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