LDT 700012, a permanent power switch unit, offers versatile control options for model railway enthusiasts. With its bistable relay and two switch contacts, it enables switching of turnout, street, and building illumination. Additionally, when paired with the Turntable-Decoder TT-DEC, it facilitates automatic polarity changes for 2-conductor turntable bridges. Each output can handle a maximum load of 1 Ampere, providing ample power for various applications.
LDT 700012, a permanent power switch unit, offers versatile control options for model railway enthusiasts. With its bistable relay and two switch contacts, it enables switching of turnout, street, and building illumination. Additionally, when paired with the Turntable-Decoder TT-DEC, it facilitates automatic polarity changes for 2-conductor turntable bridges. Each output can handle a maximum load of 1 Ampere, providing ample power for various applications.
L
ittfinski
D
aten
T
echnik (
LDT
)
Operating Instruction
Permanent-Power-
Switch-Unit DSU
Part-No.:
700012
For the Turnout-Decoder
S-DEC-4 and for the TurnTable-Decoder
TT-DEC
from the Digital-Professional-Series !
>> finished module <<
⇒
Bistable relay with two switch contacts for a
maximum current load of 2 * 1 Ampere.
⇒
Suitable for the switching of turnout-, street-
and building illumination on each output of
the Turnout-Decoder S-DEC-4.
⇒
Changes the polarity of the turntable bridge
on a 2-conductor turntable in conjunction
with the TurnTable-Decoder TT-DEC.
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 instruction:
You have purchased the Permanent-Power-Switch-Unit DSU for
your model railway.
The Permanent-Power-Switch-Unit DSU is a high quality product
that is supplied within the
Digital-Professional-Series
of
Littfinski DatenTechnik (LDT).
We wish you having a good time using this product.
The Permanent-Power-Switch-Unit DSU comes with a
24 month warranty.
• Please read the following instructions carefully. Warranty will
expire due to damages caused by disregarding the operating
instructions. LDT will also not be liable for any consequential
damages caused by improper use or installation.
• We designed our devices for indoor use only.
Function:
Information for switching the digital systems are active as long as
the respective key of the keyboard will be pressed.
On this way is it possible to operate turnouts, signals or
uncoupling devices by repeated pressing the key.
If a standard mono-stable relay has been connected to the
decoder output this relay will be activated for the duration of
pressing the key only. Such a relay can not be used for street-,
building- or turnout illumination.
For such applications is it suitable to use the Permanent-Power-
Switch-Unit DSU because this unit includes a bistable relay.
A short impulse will switch-over this relay into the secondary
switch position and remains there even without voltage at the
switch contacts.
If the permanent power switch DSU will be combined with the
TurnTable-Decoder TT-DEC the polarity of a 2-conductor
turntable bridge will be automatically changed on every 180
degree turning.
Connecting the Permanent-Power-Switch
DSU to the Turnout-Decoder:
Attention: Before starting the installation switch off the
voltage of the layout (switch-off the transformers or
disconnect the mains supply).
Connect the Permanent-Power-Switch Unit DSU to an output of
a Turnout-Decoder S-DEC-4 or to the Turntable-Decoder
TT-DEC as per advice on the backside of this instruction.
The clamp KL1 on the left side of the DSU marked “G”, “COM”
and “R” shall be used for this connection.
The output clamps of the Turnout-Decoder S-DEC-4 are as well
identified by the letters “G” and “R”.
The connection at the DSU marked with ”COM” shall be
connected to the middle connection of the decoder output.
The clamps of the Turntable-Decoder TT-DEC are
corresponding marked with “G”, “Com” and “R”.
The bistable relay of the Permanent-Power-Switch-Unit DSU
contains two switches over contacts at the clamps KL2 and KL3
(upper and lower position). Each switch contact can cover a
maximum load of 1 Ampere.
The common contact of the switch (block pole) is always the
middle contact of the DSU output clamps.
With respect to the required power load of the consumers the
output can be connected to one or to both clamps.
Further products within the
Digital-Professional-Series
:
M-DEC
4-fold decoder for motor driven turnouts (Conrad, Hoffmann,
Fulgurex etc.) With free programmable decoder addresses and
possible external power supply.
SA-DEC-4
4-fold switch decoder with 4 bistable relays of 2 Ampere
switching load each. With free programmable decoder
addresses.
RM-88-N / RM-88-N-O
16-fold feedback module (also with integrated opto coupling)
for the s88-feedback bus for the connection to Memory und
Interface (Märklin-Digital), Intellibox, TWIN-CENTER, Märklin
Central Station 1 and 2, EasyControl, ECoS, High Speed
Interface HSI-88(-USB) and DiCoStation.
RM-GB-8-N
8-fold feedback module with integrated track occupancy
detectors for the s88-feedback bus.
All components are available as kits (-B), as finished modules
(-F) or as finished modules in a case (-G).
Picture 1: Permanent-Power-Switch-Unit DSU at output 2 of the Turnout-Decoder S-DEC-4 for the switching the turnout illumination.
Picture 2: Permanent-Power-Switch-Unit DSU in interaction with the Turntable-Decoder TT-DEC for the polarity switching of the
turntable bridge.
Made in Europe by
Littfinski DatenTechnik (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. 09/2022 by LDT
rot
red
braun
brown
Modellbahntrafo
transformer
Von Steuereinheit
oder Booster
From command station
or booster
Dauer Strom Umschalter
DSU
Permanent power switch unit
DSU
KL1
KL2
15 ... 24V=
Littfinski DatenTechnik (LDT)
1 2
3
RG
4
R G
red brown
4-fach Magnetartikeldecoder
4-fold turnout decoder
S-DEC-4
Rev. 2.3
+ ~ ~ -
12 ... 18V~
GR R G
K J
S1
Multi-Digital
Für 4 Doppelspulenantriebe für DCC Digitalsysteme.
Schaltstrom: 1 Ampere pro Ausgang.
Magnetartikel-Decoder
S-DEC-4-DC
Digital-Profi werden!
www.ldt-infocenter.com
Littfinski DatenTechnik (LDT)
12 ...18V~
Com R
G
DSU
Rev. 3.0
Littfinski DatenTechnik
KL2
KL1
KL3
Relais
Von Digitalzentrale
oder Booster
Ringleitung "Schalten"
From command station
or booster
Ring conductor "switching"
braun
brown
Vom Modellbahntrafo
From transformer
gelb
yellow
rot
red
braun
brown
Fleischmann Drehscheibe
Fleischmann Turntable
Dauer Strom Umschalter
DSU
Permanent power switch unit
DSU
Von Digitalzentrale
oder Booster
Ringleitung "Fahren"
From command station
or booster
Ring conductor "driving"
Com R
G
DSU
Rev. 3.0
Littfinski DatenTechnik
KL2
KL1
KL3
Relais
Z805 LM317
Littfinski DatenTechnik (LDT)
K J
LED1
red brown
ST4
IC3
LED2 LED3
grey yellowred brown
Rev. 1.3
16...18V~
G COM R
TT-DEC
1
A
Rückmeldg.
Feedback
Speed
P2
IC4
S1
JP1123
Multi-Digital
Für Fleischmann-Drehscheiben 6052, 6152, 6154,
6651, 9152, 6680 (mit und ohne "C"), 6652
(mit 3-Leiter Gleis), Roco 35900 und Märklin 7286.
Drehscheiben-Decoder
TT-DEC
(DCC und Märklin-Motorola)
Digital-Profi werden!
Littfinski DatenTechnik (LDT)
www.ldt-infocenter.com
-
1
-
2
LDT 700012, a permanent power switch unit, offers versatile control options for model railway enthusiasts. With its bistable relay and two switch contacts, it enables switching of turnout, street, and building illumination. Additionally, when paired with the Turntable-Decoder TT-DEC, it facilitates automatic polarity changes for 2-conductor turntable bridges. Each output can handle a maximum load of 1 Ampere, providing ample power for various applications.
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