10 Information BM1
3 How does the BM1 work?
With little effort, ABC manages to
accomplish just what model railway
enthusiasts crave:
Exact stopping in front of signals and
passage in the opposite direction. By
means of simple modules which supply
the braking section in front of a signal,
the locomotive decoder receives the
signal status information: if the signal is
"red", the train will stop, if the signal is
"green", the train will continue
unimpeded.
Technically, this is realised as follows: if
the signal is "red", the BM1 module
creates in the braking section an
asymmetry in the otherwise symmetrical
digital track voltage. This is spotted by
decoders. The result is a gentle braking
of the train until it comes to a halt,
optionally with the set braking delay or
set braking distance.
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