Manual

tams elektronik
LD-G-43 tams elektronik
2.5. Automated processes
The control software in the locomotive decoder enables the automation of processes and the
combination of complex processes in one function. The processes can thus be activated with a
function / a function key.
2.5.1. ABC braking procedure
The LD-G-43 locomotive decoder, with the appropriate CV setting, detects when entering an
ABC braking section that an asymmetrical track voltage is present and then automatically
reduces the driving speed with the set brake delay or braking distance. It can be set to
respond to a reduced negative voltage (lower voltage on the right rail as seen in the direction
of travel) instead of a reduced positive voltage (lower voltage on the left rail as seen in the
direction of travel).
While the locomotive is in the braking section
 the functions can be switched,
 the CVs of the decoder can be changed by means of main track programming (PoM),
 the direction of travel of the locomotive can be changed and thus the locomotive can be
shunted or driven out of the braking section in the opposite direction.
As soon as the braking section is released or the locomotive moves out of the braking section,
it accelerates with the set acceleration delay up to the set speed level.
Background information: ABC braking method (Automatic Break Control)
The ABC method is based on the fact that in the braking section, an asymmetrical voltage is
applied to the track instead of a symmetrical one. In order to be able to use the ABC braking
method, the booster must provide as symmetrical an output voltage as possible at the track
output. A special ABC-braking module reduces either the positive or the negative part of the
digital voltage for the braking section and thus generates an asymmetrical track voltage.
In principle, the braking section is only effective for one direction of travel at a time. While
the locomotive is in the braking section, all digital functions are maintained (switching of
outputs, PoM, change of direction). No short circuits occur when the locomotive crosses the
separation point between the normal section and the ABC braking section.
The normally symmetrical
digital voltage is reduced on
one side in the braking
section by a special ABC
braking module, as standard
on the right rail as seen in
the direction of travel.
Symmetrical track voltage
in the normal section
Asymmetrical track voltage
in the ABC braking section
14 | Operation overview