Transformer operations
6
Summary Table of Engine Directions
Condition Direction Change Cycle
Case #1: First power up or without power longer than 5 sec.
E unit off (switch in PROG position) N, F, N, F, etc.
E unit on (switch in RUN position) N, F, N, R, etc.
Case #2: Engine without power for less than 2.5 seconds
E unit off (switch in PROG position) N, Last-Dir, N, Last-Dir, etc.
E unit on (switch in RUN position) N, F, N, R, etc.
With your 104E reversing unit, posi-
tioning the switch in the PROG
position locks your engine into its
last moving direction plus neutral.
Positioning the switch in the RUN
position resumes normal sequenc-
ing operation.
Your locomotive’s 104E Reverse unit
The New E-Series Reversing Unit controls
the direction of the engine. When the
reversing unit senses an interruption in track
power, it will cycle into the next direction in
the sequence. The sequence is neutral, for-
ward, neutral, reverse.... Track power inter-
ruptions are created using the direction con-
trol on your transformer or Cab-1, or by
turning the throttle to zero.
When power is first applied (or after a 5
second power interruption), the engine will
power up in neutral, always before forward. A
single press of the direction button will set
your engine in forward motion. This will help
eliminate unexpected start ups, derailments,
and crashes. Listed in the table below is the
direction sequence pattern that your 104E
unit will follow under the given conditions.
As always, a lockout switch is included to
deactivate the 104 E’s sequencing function.
(for switch location see illustration below) A
new feature is that now you will have a neu-
tral available even when the reversing unit is
“off”. In addition, you no longer have to
slow the engine by hand to turn off the
reversing unit while the train is moving.
Simply stop the engine, and throw the
switch. The 104E unit will be locked into its
last moving direction, plus neutral. Even
simpler, just put the switch in the “PROG”
position and keep power off for 5 seconds.
When you start, you will be locked in neu-
tral/forward.Otherwise, your “reverse” lock
will become a “forward” lock after any 5 sec-
ond power off.
NOTE: Due to limitations of the electronic
components, it is hard to predict how each
engine will function when power is interrupt-
ed between 2.5 seconds and 5 seconds.
Engines will function either as in case #1 or
case #2. This solely depends on the toler-
ances of the installed electronics and is not
affected or caused by your power supply.
