L
ittfinski
D
aten
T
echnik
(
LDT
)
Multi-Digital
feedback module
with integrated
8-fold
occupancy detectors
for the RS-feedback bus
from the
Digital-Professional-Series
!
RS-8-G
Part-No.:
300213
>> finished module in a case <<
⇒
monitors up to 8 different track sections
(current detection from 0,001[1mA] up to 3 ampere)
⇒
integrated voltage control
(avoiding “track free” feedback in case of power failures)
⇒
separated by opto coupler
(between track- power supply voltage and feedback bus)
⇒
compatible to RS-feedback bus)
(can be operated together with RS-16-O, LR101, LS100 etc.)
⇒
suitable for digital control:
Digital Plus
from Lenz.
This product is not a toy! Not suitable for children under 14 years of age! The kit
contains small parts, which should be kept away from children under 3! Improper
use will imply danger of injuring due to sharp edges and tips! Please store this
instruction carefully.
Introduction / Safety Information:
You have purchased the 8-fold feedback module
RS-8
with
integrated detection of track occupancy for your model railway.
The
RS-8
is a high quality product that is supplied within the
assortment of
L
ittfinski
D
aten
T
echnik (
LDT
).
We wish you having a good time using this product.
Our products are either available as kits or as finished modules.
The finished modules come with
24 month warranty
.
•
Please read the following instructions carefully. Warranty will
expire due to damages caused by disregarding the operating
instruction.
LDT
will also be not liable for any consequential
damages caused by improper use or installation.
Connection of the RS-8 with your digital model
railway:
•
Attention: Please switch off your digital control unit and
unplug the transformers from AC-current before starting
connecting the unit.
•
Power Supply: Connect the feedback module at the 4-
poles clamp with your model train transformer (14 to 18V
AC). It is also possible to connect the RS-8 module directly
to the digital circuit. In this case connect both clamps of
KL7 to clamp J and K of a power booster (LZV100 / LV101
/ LV102 / LV200).
Feedback bus: Connect the input R and S at the 4-pole
clamp to the identically marked clamps of the command
station LZ100 or LZV100. Further feedback modules (RS-8,
RS-16-O, LR101, LS100 etc.) have to be simply connected
in parallel.
Digital Current: Connect the clamps J and K at IN1 and IN2
of the 20-pole clamp with the identically marked clamps on
the power booster LZV100 / LV101 / LV102 / LV200).
General Functions:
The feedback module
RS-8
combines the
occupied track
detection
and the
feedback functi
on. The
8 detectors for
occupied tracks
work by
detection of curren
t. In cases a
connected track is occupied by an object with a minimum of
0,001 Ampere (1mA) consuming current, the track will be
detected as occupied.
Locomotive decoder
,
coach lights
or
resistance axles
are
consuming electrical power
and therefore induce the detection
of an occupied track.
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
The
max. track current per output
shall not exceed
3
Ampere
. A
peak current
of up to
7 Ampere
is acceptable. The
supply
booster
has to identify the
overload
or
short circuit
and has to
switch off
.
The
track
voltage
(digital current circuit), the
power supply
and
the
feedback
bus
are separated by opto galvanic
.
The current for the tracks can therefore safely be supplied from
different transformers without having a negative effect on the
power booster (LZV100 / LV101 / LV102 / LV200).
The
modular concept
of
occupied track detectors
and
feedback decoders
implements a considerable problem: As
soon as there is no electrical power on the tracks, all tracks are
detected as free because no consuming current is detected.
There are track occupied detectors available on the market which
use an auxiliary voltage to solve this problem, but this can
influence sometimes the locomotive decoder causing
disturbances and is therefore no suitable solution.
As the feedback module
RS-8
has a build-in intelligence
(microprocessor Z86... [IC1], we have integrated a solution called
voltage-monitor
. In case of voltage drop or short circuit there is
no inaccurate “free track” detection reported back via the
feedback bus to the digital control unit or the PC. All track
occupancies will be “frozen” during this phase of voltage
interruption.
As soon as there is current on the tracks again the actual
situations on the tracks will be detected and reported back via
the feedback bus.
The feedback modules
RS-8
are suitable for decentralize
installation underneath the model railway installation. There are
4-bores on the edges of the modules for quick and easy
installation.
The modules are connected with each other’s via the
RS-
feedback bus
(cables to the connecting clamps R and S).
Therefore each feedback module gets it’s own individual address
which is unique and cannot be allocated a second time by
another module.
Operating Instruction
