15
MTH GP38-2 Operating Instructions
Special Reverse Unit Options
Reverse Unit Lockout Operation
For operators who wish to lock their engine into a single direction,
Proto-Sound’s® unique design eliminates the need for a lock-out switch on
the locomotive. This will allow users to run the engine on layouts equipped
with block signals or stop stations that would normally cycle the engine
back into neutral.
Note: The feature must be first turned on by accessing
RESET Feature 40 (See page 22).
Locking the Engine into Single Direction Operation
Cycle the transformer throttle so that your engine is operating in the
direction you wish to lock it in (forward, neutral or reverse). With the
throttle set to approximately 8 volts, press and hold the horn/whistle button.
While holding the horn/whistle button, turn the throttle OFF, then release
the horn/whistle button. After 2 seconds, you will hear a short whistle blast.
IMMEDIATELY turn the throttle back on. The engine is now locked, and
will continue in the previous direction whenever power is applied to the
track.
Unlocking the Engine
With the throttle set to approximately 8 volts, press and hold the
horn/whistle button. While holding the horn/whistle button, turn the throttle
OFF, then release the whistle button. After three seconds, a single bell will
be heard indicating that the engine is unlocked. When power is again
applied, the engine will enter RESET and perform as normal.
NOTE: When locking the engine in the Forward or Reverse positions, the
horn/whistle button will blow the horn/whistle. But when locking the engine
into the NEUTRAL position, the horn/whistle button may turn on or off
sounds of the bell. Remember, the horn/whistle doesn’t blow in NEUTRAL
(unless you programmed it to do so using Reset Feature 25 - see page 20
for details), only the bell rings.
