tams elektronik SD-34 User manual

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SD-34 n
Schaltdecoder
Accessory Decoder n
Décodeur de commutation
Schakeldecoder n
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Art.-Nr. 44-01345 / 44-01346 / 44-01347 n
nAnleitung
nManual
nMode d´emploi
WD-34 nHandleiding
Weichendecoder
Point decoder n
Décodeur d’aiguillage
Wisseldecoder n
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Art.-Nr. 44-02345 / 44-02346 / 44-02347 n
DCC
MM
DCC
MM

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nDeutsch 3
nEnglish 27
nFrançais 51
nNederlands 75
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© 09/2008 Tams Elektronik GmbH
Alle Rechte, insbesondere das Recht
der Vervielfältigung und Verbreitung
sowie der Übersetzung vorbehalten.
Vervielfältigungen und Reproduktionen
in jeglicher Form bedürfen der
schriftlichen Genehmigung durch die
Tams Elektronik GmbH.
Technische Änderungen vorbehalten.
© 09/2008 Tams Elektronik GmbH
All rights reserved. No part of this
publication may be reproduced or
transmitted in any form or by any
means, electronic or mechanical,
including photocopying, without prior
permission in writing from Tams
Elektronik GmbH.
Subject to technical modification.
© 09/2008 Tams Elektronik GmbH
Tout droits réservés, en particulier les
droits de reproduction et de diffusion
ainsi que le traduction. Toute
duplication ou reproduction sous
quelque forme que ce soit nécessite
l´accord écrit de la societé Tams
Elektronik GmbH.
Sous réserve de modifications
techniques.
© 09/2008 Tams Elektronik GmbH
Alle rechten voorbehouden. Niets uit
deze publicatie mag worden
vermenigvuldigd opgeslagen of
openbaar gemaakt, zonder
voorafgaande schriftelijke toestemming
van Tams Elektronik GmbH.
Technische wijzigingen voorbehouden.
n

SD-34 / WD-34 English
Page 27
Table of contents
1. Getting started 28
2. Safety instructions 29
3. Safe and correct soldering 32
4. Operation overview 33
5. Technical specifications 34
6. Assembling the kit 35
7. Connecting the decoder 41
8. Programming the decoder 44
9. Check list for troubleshooting 47
10. Manufacturer's note, CE and Warranty 48
Parts list SD-34 I.1
Printed Circuit Board (PCB) layout SD-34 I.2
Circuit Diagram SD-34 II
Parts list WD-34 III.1
Printed Circuit Board (PCB) layout WD-34 III.2
Circuit Diagram WD-34 IV
(Pages I to IV in the centre of this handbook are removable.)
Remark: RailCom®is the registered trademark of the Lenz Elektronik
GmbH, Hüttenbergstraße 29, D-35398 Gießen. To increase the text´s
readabiliy we have refrained from refering to this point in each
instance.

English SD-34 / WD-34
Page 28
!
1. Getting started
How to use this manual
This manual gives step-by-step instructions for safe and correct
assembly of the kit and fitting of the ready-built module, and operation.
Before you start, we advise you to read the whole manual, particularly
the chapter on safety instructions and the FAQ chapter. You will then
know where to take care and how to prevent mistakes which take a lot
of effort to correct.
Keep this manual safely so that you can solve problems in the future. If
you pass the kit or the ready-built module on to another person, please
pass on the manual with it.
Intended use
The kit or the ready-built module can be assembled and operated with
a digital model railway run in DCC or Motorola format to operate
solenoid accessories (point decoder WD-34) or other accessories
(accessory decoder SD-34), using this manual.
Any other use is inappropriate and invalidates any guarantees.
The kit and the ready-built module should not be assembled or fitted by
children under the age of 14.
Reading, understanding and following the instructions in this manual
are mandatory for the user.
Caution:
The circuit contains integrated circuits. These are very sensitive to static
electricity. Do not touch components without first discharging yourself.
Touching a radiator or other grounded metal part will discharge you.

SD-34 / WD-34 English
Page 29
Checking the package contents
Please make sure that your package contains:
§one kit, containing the components listed in the parts and one PCB
or one ready-built module,
§one jumper for programming the address,
§one manual.
Required materials
For assembling the kit you need:
§an electronic soldering iron (max. 30 Watt) with a fine tip,
§a soldering iron stand,
§a tip-cleaning sponge,
§a heat-resistant mat,
§a small side cutter and wire stripper,
§a pair of tweezers and long nose pliers,
§tin solder (0,5 mm. diameter),
In order to connect the module you need wire. Recommended
diameters: >0,25 mm² for all connections.
2. Safety instructions
Mechanical hazards
Cut wires can have sharp ends and can cause serious injuries. Watch
out for sharp edges when you pick up the PCB.
Visibly damaged parts can cause unpredictable danger. Do not use
damaged parts: recycle and replace them with new ones.
Electrical hazards
§Touching powered, live components,
§touching conducting components which are live due to malfunction,
§short circuits,
§connecting the circuit to another voltage than specified,

English SD-34 / WD-34
Page 30
§impermissibly high humidity,
§condensation build up
can cause serious injury due to electrical shock. Take the following
precautions to prevent this danger:
§Never perform wiring on a powered module.
§Assembling and mounting the kit should only be done in closed,
clean, dry rooms. Beware of humidity.
§Only use low power for this module as described in this manual and
only use certified transformers.
§Connect transformers and soldering irons only in approved mains
sockets installed by an authorised electrician.
§Observe cable diameter requirements.
§After condensation build up, allow a minimum of 2 hours for dispersion.
§Use only original spare parts if you have to repair the kit or the
ready-built module.
Fire risk
Touching flammable material with a hot soldering iron can cause fire,
which can result in injury or death through burns or suffocation.
Connect your soldering iron or soldering station only when actually
needed. Always keep the soldering iron away from inflammable
materials. Use a suitable soldering iron stand. Never leave a hot
soldering iron or station unattended.
Thermal danger
A hot soldering iron or liquid solder accidentally touching your skin can
cause skin burns. As a precaution:
§use a heat-resistant mat during soldering,
§always put the hot soldering iron in the soldering iron stand,
§point the soldering iron tip carefully when soldering, and
§remove liquid solder with a thick wet rag or wet sponge from the
soldering tip.

SD-34 / WD-34 English
Page 31
Dangerous environments
A working area that is too small or cramped is unsuitable and can cause
accidents, fires and injury. Prevent this by working in a clean, dry room
with enough freedom of movement.
Other dangers
Children can cause any of the accidents mentioned above because they
are inattentive and not responsible enough. Children under the age of 14
should not be allowed to work with this kit or the ready-built module.
Little children can swallow small components with sharp edges, with
fatal results! Do not allow components to reach small children.
In schools, training centres, clubs and workshops, assembly must be
supervised by qualified personnel.
In industrial institutions, health and safety regulations applying to
electronic work must be adhered to.

English SD-34 / WD-34
Page 32
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3. Safe and correct soldering
Caution:
Incorrect soldering can cause dangers through fires and heat. Avoid
these dangers by reading and following the directions given in the
chapter Safety instructions.
§Use a small soldering iron with max. 30 Watt. Keep the soldering tip
clean so the heat of the soldering iron is applied to the solder point
effectively.
§Only use electronic tin solder with flux.
§When soldering electronic circuits never use soldering-water or
soldering grease. They contain acids that can corrode components
and copper tracks.
§Solder quickly: holding the iron on the joints longer than necessary
can destroy components and can damage copper tracks or
soldering eyes.
§Observe correct polarity orientation of semi-conductors, LEDs
electrolytic capacitors and integrated circuits before soldering and
ensure that the solder time does not exceed 5 seconds, otherwise
components can be damaged.
§Apply the soldering tip to the soldering spot in such a way that the part
and the soldering eye are heated at the same time. Simultaneously add
solder (not too much). As soon as the solder becomes liquid take it
away. Hold the soldering tip at the spot for a few seconds so that the
solder flows into the joint, then remove the soldering iron.
§Do not move the component for about 5 seconds after soldering.
§To make a good soldering joint you must use a clean and
unoxidised soldering tip. Clean the soldering tip with a damp piece
of cloth, a damp sponge or a piece of silicon cloth.
§Cut the wires after soldering directly above the PCB solder side with
a side cutter.

SD-34 / WD-34 English
Page 33
§After placing the parts, please double check for correct polarity.
Check the PCB tracks for solder bridges and short circuits created
by accident. This would cause faulty operation or, in the worst
case, damage. You can remove excess solder by putting a clean
soldering tip on the spot. The solder will become liquid again and
flow from the soldering spot to the soldering tip.
4. Operation overview
Driving the decoder
The decoder´s outputs are operated via accessory decoder commands
in DCC or Motorola format, sent from the central unit to one of the four
accessory decoder´s addresses. The decoder automatically recognizes
the commands´data format. It is possible to switch the outputs via
mixed DCC and Motorola commands as well as to operate one output
alternately in DCC and Motorola format.
Use
The point decoder WD-34 activates up to four connected points or up
to eight other solenoid accessories. Application areas are coil driven
points, semaphore type signals and decouplers.
The accessory decoder SD-34 has four integrated change-over relays to
operate connected accessories. Application areas are lightings of all
kind, light signals and motor-run points with tape shut-off.
Programming
Using a DCC central unit the decoder´s features can be defined by
programming the configuration variables (CV). It is also possible to set the
address by using a programming jumper.
When using a Motorola central unit the decoder address has to be set
with aprogramming jumper. Changing the other decoder´s features is
neither necessary nor possible in layouts run in Motorola format only.

English SD-34 / WD-34
Page 34
Feedback
The SD-34 and the WD-34 are RailCom compatible, i.e. the decoders
are able to pass the RailCom messages via the rails to special RailCom
detectors. This allows e.g. to feedback the correct performance of
setting and switching commands or the actual setting of points.
Power supply
The decoder can either be supplied by the central unit or a booster. In
order to release the digital electric circuit it is also possible to supply the
decoder by a transformer of it´s own.
5. Technical specifications
Data format DCC, Motorola
Feedback log RailCom
Supply voltage digital voltage of the central unit
or 14 – 20 V alternating voltage
Current consumption
(without connected loads) approx. 40 mA
Max. total current 1.500 mA
Max. current of the function outputs
(up to 2 Sek.) 1.500 mA each
Max. constant current
of the function outputs 800 mA each
Protected to IP 00
Ambient temperature in use 0 - + 60 °C
Ambient temperature in storage -10 - + 80 °C
Comparative humidity allowed max. 85 %
Dimensions approx. 73 x 83 mm
Weight (SD-34) approx. 67 g
Weight (WD-34) approx. 58 g

SD-34 / WD-34 English
Page 35
6. Assembling the kit
You can skip this part if you have purchased a ready-built module.
Preparation
Put the sorted components in front of you on your workbench. The
separate electronic components have the following special features you
should take into account to prevent mistakes in assembling:
Resistors
Resistors reduce current. Their mounting orientation is of no
importance. The value of resistors for smaller power ratings
(under 5 W) is indicated through colour rings. Every colour
stands for another figure. The colour ring in brackets indicates
the tolerance of the resistor which here is of no importance.
Value Colour rings
0,27 Ω / 1 W red - violet - silver (gold)
33 Ω / 0,25 W orange - orange - black (gold)
100 Ω / 0,25 W brown - black - brown (gold)
220 Ω / 0,25 W red - red - brown (gold)
1 kΩ / 0,25 W brown - black - red (gold)
1,5 kΩ / 0,25 W brown - green - red (gold)
2,2 kΩ / 0,25 W red - red - red (gold)
4,7 kΩ / 0,25 W yellow - violet - red (gold)
10 kΩ / 0,25 W brown - black - orange (gold)

English SD-34 / WD-34
Page 36
Diodes
Diodes allow the current to pass through in one direction only
(forward direction), simultaneously the voltage is reduced by
0,3 to 0,8 V. Exceeding of the limit voltage always will destroy
the diode, and allow current to flow in the reverse direction.
The diode type is printed on the body.
Diodes must be mounted in a given direction. The negative
end is marked with a ring. This is shown in the PCB layout.
Zener diodes
Zener diodes are used for limiting voltages. In contrast to
"normal" diodes they are not destroyed when the limit voltage
is exceeded.
Light emitting diodes (LEDs)
When operated in the forward direction the LEDs light. They
are available in several different versions (differing in colour,
size, form, luminosity, maximum current, voltage limits). The
longer lead of wired LEDs is always the anode (positive pole).
Light emitting diodes should always be connected via a series
resistor which limits the current and prevents failure.

SD-34 / WD-34 English
Page 37
Capacitors
Among other things capacitors are used for filtering
interference voltages or as frequency determining parts.
Ceramic capacitors are not polarized, for that reason their
mounting orientation is of no importance. Normally they are
marked with a three-digit number which indicates the value
coded.
Value Number
100 nF 104
Electrolytic capacitors
Electrolytic capacitors are often used to store energy. In
contrast to ceramic capacitors they are polarized. One of the
two leads is marked with a minus sign which indicates the
mounting orientation. The value is given on the casing.
Electrolytic capacitors are available with different voltage
sustaining capabilities. Using an electrolytic capacitor with a
voltage sustaining capability higher than required is always
possible.
Transistors
Transistors are current amplifiers which convert low signals
into stronger ones. They have three contacts. As they are
polarized, they have to be mounted in a certain direction.
BC-Types have a housing in form of a half cylinder (SOT-
housing). The cross section is shown in the PCB Layout which
determines the mounting orientation.
The BD types have a flat housing (TO-housing) with the type
designation printed on the front side. The metallic rear is
unlabelled, on the PCB layout the rear is marked by a thick
line.

English SD-34 / WD-34
Page 38
Integrated circuits (ICs)
Depending on the type, ICs fulfil various tasks. They are
polarized and therefore have to be mounted in a certain
direction. The most common housing form is the so-called
"DIL"-housing, from which 4, 6, 8, 14, 16, 18 or more "legs"
(pins) are arranged along the long sides. The mounting orientation is
shown by a semicircular or circular marking at the end of the housing,
which is also shown on the PCB layout.
ICs are sensitive to damage during soldering (heat, electrostatic
charging). For that reason in the place of the ICs IC sockets are
soldered in, in which the ICs are inserted later. The mounting
orientation of the sockets is preset as well. The markings on the PCB,
the socket and the IC must lie on top of each other after mounting.
Opto couplers
Opto couplers are ICs, which work similar to laser beam switches. They
combine in one housing a light emitting diode and a photo transistor.
Their task is the transmittion of information without galvanic
connection. Normally they are in a DIL-housing with 4, 6 or 8 pins.
Relays
Relays are electronic switches, depending on their position the one or
other (internal) connection is closed. Their mode of operation can be
compared to that of a push-button switch, i.e. the connection is only
closed as long as the voltage is applicated. Bistable relays keep their
status after switching – comparable to a switch.
Relays which combine two switches in one housing are common as well
(shortly 2xUM). The switching between the two connections can be
heard clearly because of the resulting clicking sound.
The mounting orientation of the relays which are put in a rectangular
box shaped housing is given by the layout of the pins.

SD-34 / WD-34 English
Page 39
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Terminal strips
Terminal strips are solder-in screw-type terminals. They provide a
solder-free and safe connection of the cables to the circuit, which can
still be seperated any time. When several terminal strips have to be
mounted side by side, they have to be put together before mounting.
Assembling the kit
Start the assembly with the resistors, the diodes and the zener diodes.
First solder the components on the solder side of the PCB and then cut
the excess wires with the side cutter, as short as possible.
Next solder in the capacitors, the transistors and the IC-sockets. The
sockets have to be mounted according to the marking on the PCB.
Continue the assembly with the electrolytic capacitors. The WD-34´s
PCB has to be inserted either with two radial electrolytic capacitors 220
µF (C2 and C3) or with two axial electrolytic capacitors 220 µF (C4 and
C5) depending on the package contents.
Next solder in the solder pins, the LED, for the SD-34 the relays, and the
terminal strips. Put together the terminal strips before mounting them.
Finally, insert the ICs into the soldered IC-sockets.
Caution:
Diodes, zener diodes, transistors, ICs, electrolytic capacitor and LEDs
must be placed in the right direction! If you solder them the wrong way the
affected parts can be damaged when you connect the power. In the worst
case the whole circuit can be damaged. In any case, a wrongly connected
part will not function.

English SD-34 / WD-34
Page 40
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Caution:
Do not touch the ICs without first discharging yourself by touching a
radiator or other grounded metal parts. Do not bend the "legs" of the
ICs when inserting them into the sockets. Check that the markings on
the PCB, the socket and the IC show to the same direction.
Performing a visual check
Perform a visual check after the assembly of the module and remove
faults if necessary:
§Remove all loose parts, wire ends or drops of solder from the PCB.
Remove all sharp wire ends.
§Check that solder contacts which are close to each other are not
unintentionally connected to each other. Risk of short circuit!
§Check that all components are polarised correctly.
When you have remedied all faults, go on to the next part.

SD-34 / WD-34 English
Page 41
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!
7. Connecting the decoder
The decoder has terminal strips inserted to plug in and screw on the
connecting wires. You will find the proper arrangement of the
connections in the following pin connections (seperate for points
decoder WD-34 and accessory decoder SD-34). Make the connections
to the accessories, the central unit and the power supply.
Power supply
You can supply the decoder either via the central unit or via a seperate
transformer according to the two following diagrams.
Power supply via central unit. Power supply via separate transformer.
Caution:
Switch off the central unit before connecting the decoder.
Caution:
If a component gets too hot, disconnect the decoder and the power
supply from the mains immediately. Possible short circuit! Check the
assembly!
Central
Unit Central
Unit
Transformer

English SD-34 / WD-34
Page 42
Pin connections points decoder WD-34
Connection points decoder WD-34
JP1 Programming jumper
X1 Solenoid accessory / points 2 "straight on"
X2 Solenoid accessory / points 2 return conductor
X3 Solenoid accessory / points 2 "branching"
X4 Solenoid accessory / points 4 "straight on"
X5 Solenoid accessory / points 4 return conductor
X6 Solenoid accessory / points 4 "branching"
X7 not in use
X8 Power supply / transformer
X9 Input DCC signal / central unit
X10 Solenoid accessory / points 1 "straight on"
X11 Solenoid accessory / points 1 return conductor
X12 Solenoid accessory / points 1 "branching"
X13 Solenoid accessory / points 3 "straight on"
X14 Solenoid accessory / points 3 return conductor
X15 Solenoid accessory / points 3 "branching"
X16 not in use
X17 Power supply / transformer
X18 Input DCC signal / central unit

SD-34 / WD-34 English
Page 43
Pin connections accessory decoder SD-34
Connection accessory decoder WD-34
JP1 Programming jumper
X1 Switching contact 2, to be switched with "straight on"
X2 Switching contact 2, return conductor
X3 Switching contact 2, to be switched with "branching"
X4 Switching contact 4, to be switched with "straight on"
X5 Switching contact 4, return conductor
X6 Switching contact 4, to be switched with "branching"
X7 not in use
X8 Power supply / transformer
X9 Input DCC signal / central unit
X10 Switching contact 1, to be switched with "straight on"
X11 Switching contact 1, return conductor
X12 Switching contact 1, to be switched with "branching"
X13 Switching contact 3, to be switched with "straight on"
X14 Switching contact 3, return conductor
X15 Switching contact 3, to be switched with "branching"
X16 not in use
X17 Power supply / transformer
X18 Input DCC signal / central unit

English SD-34 / WD-34
Page 44
8. Programming the decoder
You can programm the configuration variables (CV) of the accessory
decoder WD-34 and the switching decoder SD-34 using a DCC digital
central unit. See the chapter in the manual of your central unit where the
byte wise programming of configuration variables (CVs) is explained.
When using a Motorola central unit you can set the decoder address
with aprogramming jumper. Changing the other decoder´s features is
neither necessary in layouts run in Motorola format only nor possible
with Motorola central units.
Programming decoder and accessory decoder addresses
The decoder address is set in the configuration variables (CV) or by
using the programming jumper. The accessory decoder address used to
send the switching commands result from:
Decoder address x 4 = highest address of the quadruple accessory
decoder address block
Name of CVs CV-
no.
Input value
(Default)
Remarks and tips
Decoder
address
1 to 63
11, 2, 3, ... 63
(1)
NB: In addition, you have to
input the value "0" in CV#9.
Decoder
address
(64 to 510)
90, 1, 2, 3 ... 7 Please notice: You have to input
a value in CV#1 as well.
Determining the input values for addresses higher than 64:
1. Divide the chosen address by 64. Round down the result to a whole number.
Input this value in CV#9.
2. Multiply the value set for CV#9 multiply by 64. Subtract this result from the
chosen address. Enter this value in CV#1.
Example: address 415:
1. 415 / 64 = 6,45 àCV#9 = 6
2. 415 – (6 x 64) = 31 àCV#1 = 31