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Conventional transformer operations
Locking your powered A-unit locomotive into a single direction
W
hen the Command reverse unit switch is in the RUN position, your powered A-unit
locomotive sequences through a repeating pattern of operations: forward, neutral, reverse,
neutral, and so on.
To “lock” your powered A-unit locomotive into a single direction (for example, to operate in
forward only), you can deactivate the Command reverse unit’s sequencing function. Refer to
Figure 1 for the location of the Command reverse unit switch.
1. Use your transformer’s
DIRECTION
button or interruptions in track power to get your
powered A-unit locomotive moving in the desired direction or into neutral.
2. Slow the locomotive down without stopping (reduce the throttle without turning off track
power).
3. Slide the Command reverse unit switch on the powered A-unit locomotive to the PGM
position. At this point, the locomotive is “locked” into your chosen direction.
To restore the forward-neutral-reverse sequence, just slide the Command reverse unit switch
back to the RUN position.
Your locomotive will “reset” to forward after any power interruption lasting five
seconds or longer, regardless of the direction you set.
7
Figure 1. Switch locations
Note!
Powered F3A reverse unit control switch
RUN
FULL
PROG
SIG
PROG/LOCK
FWD/RUN
Non-powered F3B
program switch
Non-powered F3B
sound switch
Summary of Contents for 2269W B & O Diesel Freight
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