TrainController Gold and Silver - Freiwald Software

Diagram 105: Block with three occupancy sensors
Diagram 105 shows a block equipped with three occupancy sensors. Each of these sensors
is associated with a contact indicator in the software called A, B and C. All indicators
are assigned to the same block in the software. The block is indicated as occupied
as soon as a train enters section A from the left or section C from the right. The block
remains occupied until the train leaves the opposite section. A stop marker has been defined
for indicator A for trains running to the left, C is marked with a stop marker for
trains running to the right. The trains are stopped at the boundary between B and A or
C, respectively. The indicator B is associated with two brake markers for both directions.
Trains begin to slow down when entering B from either direction. The sections A
and C should be long enough such that each train is safely stopped before touching one
of the turnouts. On the other side the longest train should completely fit into the block
when being stopped. For this reason the boundaries between B and A or C, respectively,
where trains are stopped, must be located close enough to the boundaries of the
complete block.
The configuration displayed in Diagram 105 is the optimal and recommended solution.
The block is indicated as occupied as long as a train is located in one of the three occupancy
sections. Additionally it would be even possible to distinguish in which of the
three sections A, B or C a train is located. Lost or parked cars can be detected, too, if
they cause an occupancy indication. Pushed trains can also be treated, too, if the first
pushed car generates an occupancy indication. This method requires the effort, however,
of cutting the rails at the boundaries of each occupancy section.
Diagram 106: Block with an occupancy and two momentary sensors
161