Premier P-47 Pacific Locomotive
4
Ensuring Proper Power to Track Polariy
Figure 3: Proper 2-Rail polarity wiring and locomotive orientation
Changing Track Polarity Inside the Locomotive
Figure 4: Changing the polarity with the locomotive polarity switch
For 2-rail DCS operation, it is important that the polarity from the transformer to
the engine is properly configured. Correct polarity can be accomplished by
ensuring that the wiring from the TIU to the track and orientation of the
locomotive when sitting on the track follows the illustration in Figure 3.
Failing to properly configure the polarity will result in the locomotive starting in
reverse instead of forward or not receiving the DCS signal. Should this occur, it
is not necessary to swap the wires from the transformer to the track or reverse
the locomotive’s orientation on the track itself. Instead, simply slide the
polarity switch located in the second top hatch on the tender as seen in Figure 4.
To TIU Black Terminal
To TIU Red Terminal
DCS Polarity Switch
2-Rail / 3-Rail Switch
DCS Polarity Switch
