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The LGB Terminal Loop Set 10151
contains a normal isolating track section T and a special
track section K (diode track) which is marked with an
arrow to indicate the direction of running. Operating
around a terminal loop without special wiring and swit-
ches presents no problems with this set.
Operating around a terminal loop with or without
stopping
A train runs into the terminal loop with the controller set
at position (1) and stops at the station, controller position
(0). The controller knob is now turned to position (2), the
train can now run out of the terminal loop. The point set-
ting remains set to "pulling in" (10152 ––> 10151). (Point
is a manually operated one) (Fig. 1).
If the train is run through the terminal loop without
stopping, then the control knob should be quickly turned
from position (1), via position (0) to position (2) while the
train runs around the curve of the terminal loop.
A look into the details of a diode track section for
technically-minded LGB model railway enthusiasts
Two diodes are fitted into the track section (Fig. 2).
These electronic components are polarity dependent:
they allow current to flow in only one direction whereas
the other direction is blocked. As you can see from the
illustration, although the voltage has been reversed on
the controller, the polarity of the track within the termi-
4
nal loop remains constant. This technical process does
not apply if the following suggestions for construction
are followed.
Rules for Terminal Loops in Track Plans
• Terminal loop traffic may only be operated in one
predetermined direction.
• The isolating track section T should be mounted
behind the "pulling in" (manual point) set of points.
• The terminal loop track section K should be mounted
shortly before the "pull out" of the terminal loop with
the arrow pointing towards the set of points.
• The distance between the two sections of track T
and K should be at least as long as the longest train
which is to be operated around the terminal loop.
This allows enough time for polarity reversal. When
using the illuminated 30190 post luggage wagon, the
distance must be at least as long as the entire train.
• Shunting within the terminal loop is not possible.
• When operating around the terminal loop, the control-
ler knob must be rotated through the zero position to
the other side. This allows the train to leave the termi-
nal loop again (the train will then continue around the
layout but will run in the opposite direction).
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