Proto-Coupler Operation - M.T.H. Alco S-2 Operator's Manual

FYS/PSA will continue, and within a few seconds, the engine will start and move
out on its own at the current throttle setting, in the same direction it was traveling
when you began the sequence. Once the bell turns off, the operator regains control
of the transformer's Bell and Horn/Whistle buttons and can ring the bell or blow the
horn/whistle as usual.
Horn/
Bell
Whistle
Sound System Cued to Play
Freight Yard or Passenger
Station Sounds (FYS)/(PSA)
Tips on Using FYS/PSA
You can terminate FYS/PSA at any time by turning off power to the track for
15 seconds.
You do not have to be in Forward to use FYS/PSA. At the conclusion of the
full sequence, the train will pull away from the station in whatever direction
you were going when you activated the feature.
You can use FYS/PSA even if you are double-heading with another engine. If
the second engine is not equipped with Proto-Sound 2.0, you must remember
not to leave the throttle at a high voltage level once you have stopped the
engine to run the FYS/PSA. Otherwise, the engine without FYS/PSA will
begin vibrating on the track as its motors strain to move the train, since they
cannot be automatically disabled during the FYS/PSA cycle (or if an original
Proto-Sound engine, FYS/PSA are triggered differently and that engine's
motor-disable feature will not be active when you run FYS/PSA in Proto-
Sound 2.0).
FYS/PSA can be triggered from Neutral. It will operate the same as if
triggered while in motion except that, at the conclusion of the FYS/PSA, the
engine will depart in the next direction of travel, as opposed to the direction it
was traveling before entering Neutral.

Proto-Coupler Operation

This locomotive is equipped with one or more coil-wound Proto-Couplers for remote
uncoupling action. Because Proto-Couplers are controlled through the Proto-Sound 2.0
microprocessor, they do not require an uncoupling track section or modification to your
layout to function. You can fire a coupler from neutral or while in motion. Use the code
shown below (and in the chart on page 7) to fire the coupler(s).
Rear Coupler:
To fire the rear coupler, quickly tap the Bell button once followed by three quick taps of
the Horn/Whistle button, allowing approximately ½ second to lapse between each quick
button press. The sound of the liftbar and air line depletion will play, and the knuckle
will be released.
Horn/
Bell
Whistle
Premier Alco S-2 Diesel Engine Proto-Sound®2.0
Horn/ Horn/
+
Direction
Whistle Whistle
1st
Sequence
FYS/PSA
®
=
Horn/ Horn/
Whistle
Whistle
+ +
Direction Direction
2nd
Sequence Sequence
FYS/PSA FYS/PSA
Fire
Rear
Coupler
8
+
Direction
3rd 4th
Sequence
FYS/PSA
Operator
=
Controls
When Bell
Turns Off