Assigning addresses of the feedback module
RS-8:
Addresses
for feedback tasks at the Digital plus System are
located in the
area
from
1
to
128.
To assure a definite feedback
each address can only be assigned once.
In addition the feedback address area is subdivided. Area
1
to
64
is reserved for
turnout decoders with feedback function
.
Feedback modules like the
RS-8
should therefore be addressed
in the area between
65 and 128
to avoid overlapping.
Therefore the LDT
RS-8
feedback module is delivered with the
default address
65
.
To change the address the RS-8 is equipped with a
programming key S1
and a
red light diode
. By pushing the
programming key
once the diode will
flash
which means that
the
RS-8
is
ready for programming
.
Programming mode will only work, if the
J
and
K
clamps at
IN1
and
IN2
of the 20 pole clamp
are properly connected to the
digital circuit
(see description above).
While the diode is flashing, you can assign the feedback address
with the hand controller
LH100
. Press the keys >
F
< and >
5
< to
get into the mode “magnet accessories”. Enter the requested
feedback address
now (e.g. >
7
< >
4
< for 74) and press
>
ENTER
<. By pressing key >
+
< or >
-
< the feedback address
input will be saved. The diode will switch off if the module has
accepted the address. The
RS-8
is now in operation mode again.
By pressing the keys >
ESC
<, >
F
< and >
6
< on the LH100 you will
get into the mode “feedback”. Enter the previously assigned
address (e.g. >
7
< and >
4
< for 74) and press >
ENTER
<.
If the
RS-8
was connected properly to the RS-feedback bus, the
display of the hand control
LH100
will show a “
b
” left below the
assigned feedback address.
When there was no feedback information received from the
RS-8
the display of the
LH100
shows a hyphen behind the
feedback address. Check the connection of your
RS-8
and
repeat programming as described above.
If you wish to control the module with a renewed model of the
manual controller or with another central unit with R/S interface,
you should read the respective operation manual at the section
“Turnout / Signal settings” respectively “Feedback reports”.
Connecting a track section:
Following figure shows how to connect the feedback module
RS-8
with a track.
The monitored
isolated track sections
will get the digital current
supply via
clamp 1 to 8
. It is required that one rail is isolated.
Detailed
Sample Connections
are
available on our web site
(www.ldt-infocenter.com) under “
Downloads
”.
For
assembling 2 different
power booster (LZV100 / LV101 /
LV102 / LV200)
the
RS-8
is divided into
2 x 4 track occupancy
controller
. The
output 1 to 4
gets the supply via the input
clamps
IN1
and the
output 5 to 8
via
IN2.
Therefore it is simply
possible to monitor up to 4 track sections in a
reversing loop
.
For this application a
reverse loop module
(e.g. LK100) has to
be assembled
between
the power booster
and the input clamp
IN1.
Please pay attention to the identification
J
and
K
at the clamps
IN1
and
IN2
as well as on the power booster.
To avoid short circuits when locomotives are crossing the
transitions of each detected track, the sequence of connecting
the tracks has to be always strictly followed.
digital current from
command station
or booster
Digitalstrom von
Steuereinheit oder
Booster
Normalgleis
standard track
Überwachte Gleisbereiche
monitored track areas
Vom Modellbahntrafo
RS-Rückmeldebus
RS-feedback bus
From transformer
8-fach Rückmeldemodul
mit Gleisbesetztmeldern
8-fold feedback module
with occupancy detectors
RS-8
Rev. 3.2
1
2
3
4
5
6
7
8
IN
1
IN
2
LED1
J
K
J
K
Littfinski DatenTechnik (LDT)
R S
14 ..18V~
S1
KL7
KL8
8-fach Rückmeldemodul mit integrierten Gleisbelegtmeldern
für den RS-Rückmeldebus.
8-fold feedback module with occupancy detectors for
RS-feedback bus.
RS-8
Rückmeldemodul / Feedback module
Digital-Profi werden!
Littfinski DatenTechnik (LDT)
www.ldt-infocenter.com
Therefore, the OUTPUT clips are marked with a continuous and
a non-continuous line. Cables marked with
J
always connected
to the clips with a continuous line.
In case of a short circuit when crossing the transition (control unit
will switch to STOP) please change the cables at the respective
OUTPUT clamps of the monitored section.
Anti-interference capacitor
can lead to an erroneous occupied
detection of the track and should therefore not be used within the
monitored track sections.
If you apply
electrical resistant coating
to the
axles
of your
trains you should measure the resistance value with a Multi-
meter after complete drying.
A resistance between
5
and
10 KOhm
will guarantee a safe
monitoring by the occupied track detection of the feedback
modules
RS-8.
Customary used
resistance axles
with a resistance value of
18 k-Ohm
will just be monitored, provided that the rails
are
very clean
and the railway coaches have a sufficient contact to
the rails. In such case it will be recommended, to fit
two
resistance
axles
to the coach to receive a total resistance
value of about
9KOhm
. This will assure a save monitoring even
when the rails are not perfect clean.
Trouble shooting:
What to do if something is not working as described above?
If you have purchased the
RS-8
as a kit, please carefully check
all parts and all soldered joints.
Important
for a
correct feedback report
is: It is absolutely
required that both inputs (IN1 and IN2) will receive the supply of
digital current.
Please test the detecting function of the modules first before
connecting it to the tracks.
To do this you can use a resistor (several of hundred Ohms) or a
model railway lamp which will simulate the occupied situation on
each clamp.
Without resistor or lamp the detection of the input should be
identified as “free”. With a resistor or lamp your digital control unit
or PC should show an “occupied” situation.
Made in Europe by
L
ittfinski
D
aten
T
echnik (
LDT
)
Bühler electronic GmbH
Ulmenstraße 43
15370 Fredersdorf / Germany
Phone: +49 (0) 33439 / 867-0
Internet: www.
ldt-infocenter
.com
Subject to technical changes and errors.
04/2022 by LDT
Lenz and Digital plus are registered trademarks.
