The Auto Reverse Unit operates your trolley or train in a back-and-forth operation on a point-to-point track with a timed stop at each end. The timing cycle, which includes stop time at each end, may be adjusted from approximately 30 seconds to 3 1/2 minutes. It allows you to simulate trolley and push-pull passenger operation or it can be used for a test track or display layout.
WARNING: If your power pack can output more than 1 AMP (AR-1) or 5 AMP (AR-5), the unit should be protected with a slow-blow fuse of the appropriate size (1 AMP or 5AMP) to prevent damage from overloads. (See illustration)
1. The Auto Reverse Unit is connected to you track and power supplies as shown in the illustration above. The location of insulated rail joiners is indicated by a “o”.
2. The diodes must be attached to the track so that they bridge the insulated rail joiner as shown. In the illustration, the “arrow” of the diode points to the light colored band on the diode. The band is light colored ring around the darker colored body of the diode. The direction of the diode is critical. If your trolley continues to run after it crosses the diode into the STOP/REVERSE section, the diodes may be installed backwards.
3. The length of the STOP/REVERSE zone needed is determined by the speed of your train, it’s length, and whether it is pushing or pulling other cars. A single trolley or an engine pulling cars would only require a zone long enough for the trolley or engine to stop. However, an engine pushing several cars would need a zone as long as the entire train. Remember that you must allow for room for the engine to coast to a stop. You should experiment before making permanent track alterations.
4. Connect a 13-20 Volt (AC or DC) power supply to the Input Terminals of the unit. Do NOT exceed 20 Volts. The Accessories terminals of a spare power pack are ideal for this.
5. Set the Throttle (speed) control of your power pack to the desired speed of the trolley/engine.
6. Adjust the timer control (the square box with a slotted screw on top) with a small screwdriver for the desired cycle time. Clockwise adjustment decreases the time, counter-clockwise increases it. The idea is to set the time so that the trolley travels all the way from one end to the other, pauses for an appropriate time, then reverses. If the trolley reverses before it reaches the STOP/REVERSE zone, increase the cycle time. There may be a slight variation of a few seconds between cycles due to variation in component parts.
7. Cycle time is adjustable from about 30 seconds to 3 1/2 mimutes.