27th Nov 2009

Model Train Wiring

Any analog model train and railroad hobbyists realize that wiring and electrical setups is one of the most exciting and the most satisfying part of controlling the stop and runs of the set. Every train need to stop at every station and need to decelerate on every tight corner to prevent derailing. At every stop at every station, there is a certain amount of time where trains can load and unload passengers. To make this automatic run possible when running an analog model train set, you need to do add some accessories and change wirings.

To achieve this, you have to know where to separate certain sections of the track and to configure the circuit board wirings that will control the speed and pace of the train when it passes a certain section of the track. One key component needed to be able to inform the circuit board when the train is coming is called a photo sensor.

To slow down the train, you’ll need a circuit board type AS-1. From the circuit board, one wire should be connected to the isolated rail and one more wire should be connected to the powered rail on the same isolated track. A train with a flywheel works best with this feature since it can slow down and start up gradually. The train will regain its utmost velocity once it is out of the non-isolated track.

For a train to stop, slow down, and start-up again a photo sensor is needed together with a DT-4, TD-1 and AS-1 circuit boards. One wire should connect TD-1 and DT-4 circuit boards. One wire from the DT-4 connects to the isolated track and one wire from the TD-1 should connect to one rail on the isolated track. A third wire should link up TD-1 to AS-1 and a wire from the AS-1 should connect to the non-isolated track.

The train will begin to slow down as it gets to the isolated track and will come to a stop by the time it intersects with the position sensor on the station. If you have set the time period on the circuit board on how long the model train would stop at a station, it will re-activate which will move the train at a start pace. When it reaches the next track, it will pick up speed.

For a model train to go in reverse, you will be needing an AR-1 circuit board. Two individual cables from the AR-1 should connect to both rails on the track and one more pair of wires connects to the photo sensor.

If you don’t want to tinker with your wiring, going digital would be the answer by getting a Digital Command Control. DCC enables you to control the train’s momentum and path without doing any technical alterations.

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