Connecting The Track Busy Indicator - tams elektronik GBM-1 Manual

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!
Caution:
If a component gets too hot, disconnect the booster and transformer
from the mains immediately. Possible short circuit! Check the assembly
again.
After performing a successful function test, disconnect the track busy
indicator from the voltage supply and continue with the connection of
the module.

Connecting the track busy indicator

Follow the connections diagram fig. 3. First connect the inputs E1 to E4
with the mass connection of the four track sections to be monitored.
Next connect the power supply cables of the track-busy indicator to the
transformer. If not already done, connect ground of the light
transormer with ground of the driving transformer.
!
Caution:
The ground of the driving transformer must not be connected to any of
the four track sections to be monitored.
You can now connect lamps, LEDs or relays directly to the outputs of
the track-busy indicator. As the outputs switch against ground, it is also
possible to connect digital check-back decoders. In this case follow the
manual for the decoder concerned.
Monitoring of cut off track sections
Track sections to be cut off in operation (e.g. in a shadow station) can
also be monitored with the track busy indicator. For that purpose a
resistor with a value between 1 kΩ und 4,7 kΩ has to be mounted in
the wire leading to the concerned track section so that it shunts the
switch when the track section is cut off (s. fig. 3 connection to E4).
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