LDT S-DEC-4-MM-B User manual

Littfinski DatenTechnik (LDT)
Assembly Instruction
Instructionanleit ung
4-fold turnout decoder
from the Digital-Professional-Series !
S-DEC-4-MM-B Part.-No.: 910311
(With possible external power supply)
>> kit <<
Compatible to Märklin-Motorola Format:
(e.g. Märklin-Digital∼[Control Unit, Central Station 1
und 2], Intellibox, EasyControl, ECoS, KeyCom-MM,
DiCoStation, EDiTS, EDiTS pro and others)
For digital control of:
⇒up to 4 twin-coil magnetic accessories
(e.g. turnouts or signals).
⇒up to 8 single-coil magnetic accessories
(e.g. uncoupling tracks).
⇒up to 4 permanent power switch units [DSU]
(e.g. illumination or power less tracks).
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.
CE Part-No.:
21 20 91
red point
Introduction:
You have purchased the 4 fold turnout decoder kit
S-DEC-4-MM for your model railway supplied within the
assortment of Littfinski DatenTechnik (LDT). The S-DEC-4-MM
kit is a high quality product which is easy to assemble.
We are wishing you having a good time for assembling and
using this product.
General:
Tools required for the assembly
Please assure that the following tools are available:
•a small side cutter
•a mini soldering iron with a small tip
•solder tin (if possible 0,5mm diameter)
Safety Instructions
•All electrical and electronic components included in this kit
shall be used on low voltage only by using a tested and
approved voltage transducer (transformer). All components
are sensitive to heat. During soldering the heat shall be
applied for a very short period only.
•The soldering iron develops a heat up to 400°C. Please keep
continual attention to this tool. Keep sufficient distance to
combustible material. Use a heat resistant pad for this work.
•This kit consist of small parts which can possibly be
swallowed from children. Children (especially under 3 years)
shall not participate on the assembly without supervision.
Set-Up:
For the board assembly please follow exact the sequence of the
below assembly list. Cross each line off as done after
completing the insertion and the soldering of the respective
part.
For the diodes and the zener diodes please keep special
attention to the correct polarity (marked line for the
cathode).The zener diode D4 has a thicker connection wire
suitable for position D4 only.
With reason to different makes of electrolytic capacitors you
will find different markings of the polarity. Some are marked with
"+" and some are marked with "-". Each capacitor has to be
assembled to the board that the marking on the capacitor is in
correspondence with the marking on the pc-board.
Integrated circuits (ICs) are either marked with a half round
notch on one end or a printed point for the correct mounting
position. Push the ICs into the socket assuring that the notch or
the point is corresponding with the triangular marking on the pc-
board.
Please attend to the sensitivity of the ICs to electrostatic
discharge which will cause immediate damage of the IC.
Before touching those components please discharge yourself
by contacting an earthed metal ( e.g. earthed radiator ) or work
with an electrostatic safety pad.
Please attend to the mark "+" of the rectifiers. Some
manufacturers mark the "+" connections additionally with a
longer connection wire. If the rectifier shows as marking a
flattened side this side has to correspond with the marking on
the pc-board.
Assembly List:
Pos.
Qty.
Component
Remarks
Ref.
Done
1 1 Printed Circuit Board
2 1 Z-Diode BZX ... 5V1 attend to the polarity! D1
3 2 Diodes 1N4003 attend to the polarity! D2, D3
4 1 Z-Diode BZX ... 30V attend to the polarity! D4
5 4 Resistors 1,5kOhm brown-green-black-brown R1..R4
6 1 Resistor 18kOhm brown-grey-black-red R5
7 1 Resistor 220kOhm red-red-black-orange R6
8 1 Resistor 1MOhm brown-black-black-yellow R7
9 3 Capacitors 100nF 100nF = 104 C3..C5
10 3IC-Sockets 18poles IC1..IC3
11 1IC-Socket 8poles IC4
12 1IC-Socket 6poles IC5
13 1Resonator 8MHz CR1
14 1Electrolytic-cap. 100uF/25V attend to the polarity! C6
15 1Electrolytic-cap. 470uF/35V attend to the polarity! C7
16 1Rectifier attend to the polarity! GL1
17 2Multi-Fuse R050 MF1, MF2
18 1Push Button S1
19 1Clamp 2poles KL1
20 5Clamps 3poles KL2..KL6
21 1IC: Z86E0...PSG attend to the polarity! IC1
22 2IC: ULN2803A attend to the polarity! IC2, IC3
23 1IC: 93C46 attend to the polarity! IC4
24 1IC: CNY17 attend to the polarity! IC5
25 Final Control
Made in Europe by
Littfinski DatenTechnik (LDT)
Kleiner Ring 9
D-25492 Heist/Germany
Phone: [phone] / 977 381
Fax: [phone] / 977 382
Internet: http://www.ldt-infocenter.com
Subject to technical changes and errors. 03/2014 by LDT
Märklin and Arnold are registered trade marks.

Soldering instruction
Provided you have no special experience in soldering electronic
components please read first this soldering instruction before starting
the job. Soldering has to be trained!
1. Never use additional fluxes for soldering electronic circuits which
contain acids (e.g. zinc chloride or ammonium chloride). Those can
destroy components and printed circuits when not washed off
completely.
2. As soldering material only lead free soldering tin with a rosin core
for fluxing should be used.
3. Use a small soldering iron with max 30 Watt heating power. The
solder tip shall be free from scale to assure an excellent heat
transfer to the area to be soldered.
4. The soldering shall be performed on a speedy way because a long
heat transfer can destroy the components. To much or to long
heating can take off the copper pads and copper tracks from the
board.
5. For a good soldering a well tinned solder-tip has to be brought in
contact to the copper-pad and the component wire at the same
time. Simultaneous a little solder-tin shall be applied for heating up.
As soon as the solder-tin starts melting the tin wire has to be taken
away. Just wait until the tin has well wetted the pad and the wire
and take the soldering iron away from the soldering area.
6. Make sure not to move the just soldered component for about 5
seconds after removing the soldering iron. This should create a
silver shining faultless soldering joint.
7. For a faultless soldering joint and well done soldering is a clean
non-oxidized soldering-tip absolutely required. It is not possible to
perform a sufficient soldering joint with a dirty soldering tip.
Therefore please clean the soldering tip from excessive solder-tin
and dirt by using a wet sponge or a silicone cleaning pad after each
soldering process.
8. After completion of the soldering all connection wires have to be
cutted off directly above the soldering joint by using a side cutter.
9. By soldering semiconductors (transistors, diodes), LED`s and IC`s
is it very important never to exceed the soldering time of 5 seconds
to prevent the destruction of the component. It is absolutely
required to attend to the correct polarity of the component before
starting the soldering process.
10. After the board assembly carefully control the pc-board about
correct insertion of the components and the correct polarity. Please
check if no connections or copper tracks are accidentally short
circuited by soldering tin. This can not only result to malfunction of
the module but also result to a destruction of expensive
components.
11. Please take into account that improper soldering joints, wrong
connections, faulty operation or wrong board assembly is not a
matter within our sphere of influence.
General installation information
The contact-wires of resistors and diodes to be assembled in a lying
position shall be bended in accordance to the raster distance into a right
angular position and assembled into the specified bores (in accordance
to the board assembly plan or the assembly markings). To prevent that
the components will not fall out by turn-over the pc-board please bend
the connection wires about 45° apart and solder them carefully to the
copper pads on the rear side of the board. Finally the excessive wires
shall be cutted off with a small side cutter.
The resistors in the supplied kits are metal-foil resistors. Those have a
tolerance of 1% and are marked with a brown “tolerance-ring”. The
tolerance ring can be identified by the larger margin distance
respectively the larger distance to the other four marking rings.
Normally there are five color rings on the metal-foil resistors. To read
the color code you have to locate the resistor that way that the brown
tolerance ring will be on the right side. The color rings will be red now
from left to right!
Please take care to assemble diodes with the correct polarity (position
of the cathode marking). Take care about a very short soldering time!
The same will apply to the transistors and the integrated circuits (IC`s).
The flat side of the transistors has to correspond with the marking on
the pc-board.
The transistor legs should never be assembled in a crossed position.
Further those components should have a distance of about 5mm to the
board. Attend to the short soldering time to prevent the damage of the
component by excessive heat.
Capacitors shall be assembled into the respective marked bores, the
wires to be bent a little apart and careful soldered to the copper pad. By
the assembly of electrolytic capacitors (electrolytic cap) it has to be
attended to the correct polarity (+,-)! Wrong-way soldered electrolytic
capacitors can explode during the application! Therefore is it very
important to check the correct polarity two-or even better three-times.
In addition it has to be attended to the correct capacitor values, e.g. n10
= 100pF (not 10nF!).
A careful and clean assembly will drastically reduce the possibility that
anything will not be in correct function. Check every step and every
soldering joint two times before carrying on! Attend closely to the
assembly list! Perform the described step not different and do not skip
any step! Mark each step as done at the foreseen column after
assembly and careful check.
Take your time. Private work is no piece-work because the time for
careful assembly work is much less than an extensive fault diagnosis.
Final assembly
Sockets and integrated circuits (IC´s) of the kits will be supplied on a
piece of foam to assure safe transport.
This foam shall never be used below or between components as this
foam is electrical conductive.
In case the kit will be taken into operation the conductive foam can
produce a short circuitry and destroy the complete kit. Anyhow the
function of the module will not be as expected.
Warranty
As we have no influence to the proper and correct assembly we have to
limit our warranty to the complete supply and the faultless quality of the
components.
We guarantee the function of the components in accordance to the
identified values within a non-assembled condition of the parts and the
compliance of the technical data of the circuit by attending to the
respective soldering instruction and the specified start of operation of
the module including connection and operation.
Further demands are not accepted.
We are not taking over any warranty nor any liability for any harm or
sequential damage connected to this product.
We reserve our right for a repair, rework, supply of replacement or
refund of the purchase price.
The following criteria will result to a non-repair respectively to a lost of
right to claim under guarantee:
•if acid-containing soldering tin or fluxes with corrosive content and
others have been used
•if the kit has been improper soldered or assembled
•by alterations or repair-trials on the device
•by own circuit amendments
•by construction of non-intended improper displacement of
components, free wiring of components etc.
•application of other non-original kit-components
•by damaging of copper tracks or soldering copper pads on the
board
•by wrong assembly and the sub sequential damages
•overloading the module
•by damages caused by intervention of foreign persons
•by damages caused by disregarding the operation manual
respectively the connection plan
•by connecting a wrong voltage respectively a wrong current
•by wrong polarity connection of the module
•by wrong operation or damages caused by negligent usage or
abuse
•by defects caused by bridged or wrong fuses.
All such cases will result to a return of the kit to your expenses.
Subject to technical changes and errors. 05/2013 by LDT

Littfinski DatenTechnik (LDT)
Operating Instruction
4-fold turnout decoder
from the Digital-Professional-Series !
S-DEC-4-MM-F Part-No.: 910312
(With possible external power supply)
>> finished module <<
Compatible to Märklin-Motorola-Format:
(e.g. Märklin-Digital∼[Control Unit, Central Station 1
und 2], Intellibox, EasyControl, ECoS, KeyCom-MM,
DiCoStation, EDiTS, EDiTS pro and others)
For digital control of:
⇒up to 4 twin-coil magnet accessories
(e.g. turnouts or signals).
⇒up to 8 single-coil magnet accessories
(e.g. uncoupling tracks).
⇒up to 4 permanent power switch units [DSU]
(e.g. illumination).
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.
CE Part-No.:
21 21 05
red point
Introduction/Safety instruction:
You have purchased the 4-fold turnout decoder S-DEC-4for
your model railway as a kit or as finished module.
The S-DEC-4is a high quality product that is supplied within the
assortment of Littfinski DatenTechnik (LDT).
We wish you having a good time using this product.
The turnout decoder S-DEC-4of the Digital-Professional-
Series can be easily installed and used on your digital railway.
The colored point on the receiver device indicates to which
digital system the decoder can be adapted.
In case the receiver device is marked red the decoder is
suitable for Märklin-Digital~ respectively for Märklin-Motorola
layouts.
In case the receiver device is marked yellow the S-DEC-4will
be suitable for the DCC Data format, used for instance at the
systems of Lenz-Digital Plus, Arnold-, Märklin-Digital=,
Intellibox, TWIN-CENTER, Roco-Digital, EasyControl, ECoS,
KeyCom-DC, Digitrax, DiCoStation and Zimo.
The decoder S-DEC-4is multi digital and can be installed to
the Intellibox without any problems.
The finished module comes with 24 month warranty.
•Please read the following instructions carefully. Warranty will
expire due to damages caused by disregarding the operating
instructions. LDT will also be not liable for any consequential
damages caused by improper use or installation.
Connecting the decoder to your digital
model railway layout:
•Attention: Before starting the installation switch off the
drive voltage by pushing the stop button from the
command station or disconnect the main supply.
The decoder receives the digital information via the clamp
KL1. Connect the clamp with a rail or even better connect the
clamp directly to the command station or to a booster assuring
supply of digital information free from any interference.
Pay attention to the mark at clamp KL1. The color markings
'Black/Schwarz' and 'Red/Rot' next to the clamp are used for
Arnold-Digital (old) and Märklin-Digital=.
Other systems are using the letters 'J' and 'K'.
If you use the decoder for a Märklin-Digital~ respectively
Märklin-Motorola installation please attend to the colors marks
'red/rot' and 'brown/braun'.
The decoder receives the power supply via clamp KL2 (middle
and left clamp marked with ~). Voltage in the range of 12 to
18V~ is acceptable (alternate current output of a model railway
transformer).
If you do not want to supply power to the decoder S-DEC-4
from an external transformer you can connect the clamp
KL1 to KL2 with two wires. In this case the decoder will get the
power supply complete from the digital system.
Now connect turnouts, signals, uncoupling tracks or the
permanent power switch unit [DSU] to the 3-pole clamp marked
1 to 4.
The common conductor of a double coil (turnout or signal) has
to be connected to the middle clamp of the relevant decoder
output clamp. The two remaining cables mostly marked with red
(turnout round) and green (turnout straight) shall be connected
to the clamps marked ‚G‘ and ‚R‘ accordingly.
Programming the decoder address:
To program the decoder address a turnout has to be connected
to the output 1 of the decoder.
•Switch on the power supply of your model rail way.
•Press the programming key S1. Do not touch the integrated
circuits of the pc-board because any electrostatic discharge
can destroy the IC`s.
•The turnout connected to output 1 will move now
automatically every 1,5 seconds. This indicates that the
decoder is in the programming mode.

•Switch now one turnout of the group of four assigned to
the decoder via the keyboard of the control unit or via a
remote control. For programming the decoder address you
can also release a turnout switch signal via a personal
computer.
Remarks: The decoder addresses for magnet accessories
are combined in groups of four. The address 1 to 4 build
the first group. The address 5 to 8 build the second group
etc. Each S-DEC-4decoder can be assigned to any of these
groups. Which turnout of a group will be activated for the
addressing does not matter.
•If the decoder has recognized the assignment correctly the
connected turnout will move a little faster. Afterwards the
movement slows down to the initial 1,5 seconds again.
In case the decoder will not recognize the address it could
be that the two digital information connections (clamp1) are
wrong connected. For testing this, switch the power supply
off, exchange the connection on KL1 and start addressing
again.
•Leave the programming mode by pressing the programming
key S1 again. The decoder address is now permanently
stored but it can be changed at any time by repeating the
programming as described above.
•If you press the first key of the programmed group of keys or
you send a switch signal for this turnout from a PC the
addressed turnout should move into the called direction
either into round or into straight. In case the movement goes
the wrong way please exchange the two turnout connection
cables at the ‚G‘reen (straight) and ‚R‘ed (round) marked
connection clamps of the decoder output 1.
Please attend to the following:
•All 4 decoder outputs can switch a current of 1 Ampere
peak. Modern turnout drives need about 0,25 up to 0,5
Ampere. Older drives which are not free moving or which
are dirty need more Ampere. The S-DEC-4 Decoder is
protected against overload caused by drives which are
not switching off at the end movement. The protector is an
automatic fuse which will switch back into normal operation
a few seconds after the load current is below maximum
value.
•Turnouts with integrated end-switch can create
considerable electromagnetic interference. Normally the
decoder S-DEC-4will not be influenced by this interference.
In case the decoder will be influenced please check the
turnout installation cables. Those cables should not wrap
or cross the decoder closely. Install the cables that way that
they go straight away from the clamps of the decoder. If
limited space requires a bad installation layout and the
function of the decoder will be disturbed please disconnect
the middle cable of each turnout connection and push about
5 to 10 ferrous pearls onto this cable before connecting to
the clamp again.
•These ferrous pearls are available at electronic shops or at
LDT with the order code `FP`.
•Turnout illumination: If you want to have a realistic
switching of the turnout lights you can use the LDT
permanent power switch unit [DSU] or our switch
decoder SA-DEC-4.
Decoder application:
The below draft provides examples of the multipurpose
application of the decoder S-DEC-4.
Besides the typical application of turnout control the decoder
can also be used for uncoupling tracks and signals.
12..18V~
1
23
4
S-DEC-4
Com R
G
DSU
Rev. 3.0
LittfinskiDatenTechnik
KL2 KL1
KL3
Relais
turnouts
transformer
uncoupler
signals
lights
from
transformer
permanent power switch unit (DSU)
for lights or other consumers up to 2x 2A
With our permanent power switch unit [DSU], which is
equipped with a bi-stable relay is it possible to switch lights or
other consumers up to 4A digital on or off.
Further application and circuit examples can be found in the
Internet on our Web-Site (www.ldt-infocenter.com) at the
section downloads.
Under LDT-01 you can purchase a low priced durable suitable
case for the decoder S-DEC-4.
Please consult our Web-Site for further details.
Trouble shooting:
What to do if something is not working as described above?
If you have purchased the decoder as a kit please carefully
check all parts and soldered joints.
Here some possible functional errors and possible solutions:
1. During programming of the decoder addresses the turnout
moves within 1,5 seconds, but does not confirm the
programming with faster movement by pressing any key.
•Change cable connections at KL1.
•Interfered digital information at KL1 respectively lost of
voltage at the tracks or at the installation!
Connect the decoder directly with cables to the digital
control unit or to the booster instead to the tracks. Increase
the cable diameter for long distances.
•Eventually the clamps have been tightened to strong and
therefore the clamps got loose at the soldering to the pc
board. Check the soldering connection of the clamps at
the lower side of the pc-board and re-solder them if
required.
•For kits: Is IC5 correct inserted into the socket? Has
resistor R6 actually 220 kOhm or has this resistor been
mixed-up with the 18kOhm resistor R5 respectively with the
1MOhm resistor R7?
2. The programming of the decoder address functions as
described, nevertheless the turnouts will not be activated.
•Interfered digital information on KL1 respectively larger
lost of voltage at the tracks or the installation result to
unsafe data transfer! Connect the decoder directly to the
command station or the booster. Increase the cable
diameter of long distance connection cables.
•For the kit: Is IC4 correct inserted into the socket?
Made in Europe by
Littfinski DatenTechnik (LDT)
Kleiner Ring 9
D-25492 Heist/Germany
Phone: [phone] / 977 381
Fax: [phone] / 977 382
Internet: http://www.ldt-infocenter.com
Subject to technical changes and errors. 03/2014 by LDT
Arnold, Digitrax, Lenz, Märklin, Motorola, Roco and Zimo are
registered trade marks.