tams elektronik S88-3 User manual

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S88-3
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s88-Rückmelder n
s88-Feedback Module n
Décodeur s88 n
s88-Terugmelder n
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nAnleitung
nManual
nMode d´emploi
nHandleiding
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Art.-Nr. 44-01305 / 44-01306 / 44-01307 n
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nDeutsch 3
nEnglish 18
nFrançais 33
nNederlands 48
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© 06/2008 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.
© 06/2008 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.
© 06/2008 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.
© 06/2008 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.
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English S88-3
Page 18
Table of contents
1. Getting started 19
2. Safety instructions 20
3. Safe and correct soldering 23
4. Operation overview 24
5. Technical specifications 25
6. Assembling the S88-3 25
7. Connecting the S88-3 29
8. Check list for troubleshooting 30
9. Manufacturer's note, CE and Warranty 30
Parts list I.1
Printed Circuit Board (PCB) layout (Fig. 1) I.2
Circuit Diagram (Fig. 2) II
Connections diagram (Fig. 3) III
(Pages I to III in the centre of this handbook are removable.)

S88-3 English
Page 19
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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 to feedback data via the s88 bus 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.

English S88-3
Page 20
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,
§an Ethernet patch cable (length: 0,5 m),
§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 the connections to the rails.
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,

S88-3 English
Page 21
§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.

English S88-3
Page 22
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.

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Page 23
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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.

English S88-3
Page 24
§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
The module is compatible with all components working with the s88-
bus developed by the company Märklin**. It can read in 16 earthed
contacts. This information is transferred via the s88-bus to the next
module or to the connected digital unit (interface, memory or central
unit). The data transfer from one feedback module to the next one
works on the principle of the bucket brigade device.
To each memory unit of Märklin* can be connected in series up to three
and to an interface unit up to 31 feed back modules. If connected
directly to the central unit up to 52 feed back modules can be
connected depending on the type of central unit.
Standard s88-N
The S88-3 has RJ-45 connections according to the standard s88-N,
which regulates the assignment of commercial Ethernet patch-cables
for use in s88 feedback systems. Unlike the 6-conductor connecting
cables frequently used so far, the patch-cables used in computer
networks are screened against outside electric signals. Thus using
patch-cables reduces the liability to interference considerably.
For the connection of digital devices or customary feedback modules
the module has an additional connector for a 6-conductor connecting
cable. Alternatively, the module´s RJ45 connector can be connected to
a 6-pole connector of digital devices or customary feedback modules via
a special adapter (optional extra).

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Page 25
5. Technical specifications
Number of contacts 16
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 approx. 71 g
6. Assembling the S88-3
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
1 kΩbrown - black - red (gold)
4,7 kΩyellow - violet - red (gold)
100 kΩbrown - black - yellow (gold)

English S88-3
Page 26
Resistance networks
In resistance networks several resistors are integrated. The
number of the integrated resistors varies depending on the
design. One side of the resistors is commonly taken out of the
network, the other side seperately for every resistor. The
common connection of the resistors is marked which is also
shown on the PCB print.
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
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.

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Page 27
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.
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.
RJ-45 sockets
The RJ-45 sockets are standardized and are made to connect
commercial Ethernet patch-cables (or RJ-45 cables).
Assembling the kit
Start the assembly with the lateral resistors. 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 IC-sockets. They have to be mounted according to
the marking on the PCB.
Continue the assembly with the vertical resistors, the resistance
networks, the capacitors and the transistor.

English S88-3
Page 28
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Caution:
Resistance networks, transistors and ICs 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.
Next solder in the solder pins, the terminal strips and the RJ-45 sockets.
Put together the terminal strips before mounting them.
Finally, insert the ICs into the soldered IC-sockets.
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.

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Page 29
7. Connecting the S88-3
The S88-3 has two RJ45 sockets to connect commercial Ethernet patch-
cables (RJ45 cables), which allow an interference free connection to
other feedback modules or digital devices.
Use a 6-conductor connecting cable for the connection of digital devices
or customary feedback modules which you connect to the 6-pole
connector of the S88-3. Alternatively you can use a special adapter
(optional extra) for the connection via a patch-cable.
Follow the connections diagram fig. 3.
First connect the s88 feedback module to the central unit / the
memory / the interface for a functional test. Afterwards connect all
inputs of the feedback module one after the to the module´s earth
connector X2 by inserting the connecting cable into the terminal strips
and screw it down. Check if the correct status message is shown for all
inputs.
After performing a successful functional test install the s88-feedback
module at the desired place on your model railway. Connect the inputs
1 to 16 to the rail contacts and connect the module to the central unit /
the memory unit / the interface unit or to another feedback module.

English S88-3
Page 30
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8. Check list for troubleshooting
§Parts are getting too hot and/or start to smoke.
Switch off the digital system immediately !
Possible cause: one or more components are soldered incorrectly.
àPerform a visual check.
§The central unit / the memory unit / the interface unit do not show
the proper status.
Possible cause: The connection(s) between the feedback module
and feedback modules connected in series / the digital device is /
are interrupted. àCheck the connections. When using a ribbon
cable, check as well, if the connecting socket of the ribbon cable
are put on in the right direction.
Possible cause: The connection between the input and the rail
contact is interrupted. àCheck the connections.
Hotline
If problems with your module occur, our hotline is pleased to help you.
(address on the cover page).
9. Manufacturer's note, CE and Warranty
Manufacturer's note
The person who builds this kit or brings the circuit into operation is the
manufacturer of the product. If he sells the product to another person
he is responsible for passing on all the relevant papers. Domestic
appliances assembled from a kit are deemed industrial products and
must comply with health and safety regulations.

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Page 31
Certification (CE)
This product is developed and tested in accordance with the European
standards EN 55014-1 and EN 61000-6-3. This product conforms with
the EC- directive 2004/108/EG on electromagnetic radiation and is
therefore CE certified.
To guarantee the electromagnetic tolerance in operation you must take
the following precautions:
§Connect the transformer only to an approved mains socket installed
by an authorised electrician.
§Make no changes to the original parts and accurately follow the
instructions, circuit diagram and PCB layout included with this
manual.
§Use only original spare parts if you have to repair the kit or the
ready-built module.
Conditions of warranty
This product is guaranteed for two years. The warranty includes the
correction of faults which can be proved to be due to material failure or
factory flaw. As we have no control over the correct and proper
assembly and mounting we can only guarantee the quality of the
components and the completeness of kits. We guarantee the function
of the parts according to the parameters in not mounted state as well
as the adherence to the technical specifications of the circuit when
assembled and connected according to the manual.
Other claims are excluded. By law, we are not responsible for damages
or secondary damages in connection with this product. We retain the
right to repair, make improvements, supply spare parts or return the
purchase price.
The following invalidate the warranty:
§using an unsuitable soldering iron, solder containing liquid acids or
similar,

English S88-3
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§if the kit is assembled and soldered poorly, or if damage is caused
by not following the instructions in this manual,
§if the ready-built module has been altered and repair attempts have
failed,
§if arbitrary changes in the circuit are made,
§if components are removed or swapped, or wiring is added or
removed in any other way as layed down in the original design,
§if parts other than the originals delivered with this kit are used,
§if the copper tracks or soldering eyes are damaged,
§when components are mounted incorrectly, or if the components or
the circuit are poled incorrectly, also subsequent damage resulting
from these faults,
§if damage occurs due to an overload of the module,
§if connected to a incorrect voltage or current,
§if damaged by other persons,
§if damaged by faulty operation or if damaged by careless use or
abuse,
§if damaged by touching components before electrostatic
discharging of the hands.
The asterisks **
This manual mentions the following company:
Gebr. MÄRKLIN** & Cie. GmbH
Postfach 8 60, D-73008 Göppingen

S88-3
Seite - Page - Page - Pagina I.1
Stückliste - Parts list - Nomenclature - Stuklijst
R4, R5, R6, R7, R8,
R9, R10, R11, R12,
R13, R14, R15, R16,
R17, R18, R19
1 kΩ
R2 4,7 kΩ
Widerstände
Resistors
Résistances
Weerstanden
R1, R3 100 kΩ
Widerstandsnetzwerke
Resistance networks
Réseaux de résistances
Weerstandsnetwerken
RN1, RN2 47 kΩ
Kondensatoren
Condensers
Condensateurs
Condensatoren
C1, C2, C3, C4, C5,
C6, C7, C8, C9, C10,
C11, C12, C13, C14,
C15, C16, C17, C18
100 nF
Transistoren - Transitors Q1 BC547B
IC1, IC2 4014NICs - ICs - CI´s - ICs IC3, IC4, IC5, IC6 4044N
IC-Sockel - IC-socket
Soquet IC - IC-voetje IC1, IC2 , IC3, IC4, IC5, IC6 16-pol.
JP1 nicht bestücktStiftleisten - Solder pins
Fiches - Pinstrips JP2 6-pol.
Anreihklemmen - Terminal strips
Borniers - Printkroonstenen X2 2-pol.
Doppel-Anreihklemmen
Double terminal strips
Borniers double
Dubbele printkroonstenen
X1 8-pol.
RJ-45 Buchsen – RJ-45 socket
Ports RJ45 – RJ-45 bus IN, OUT

S88-3
Seite - Page - Page - Pagina I.2
Fig. 1: Bestückungsplan - PCB layout
Plan d´implantation – Printplan

S88-3 S88-3
Seite - Page - Page - Pagina II Seite - Page - Page - Pagina II
Fig. 2:
Schaltplan
Circuit Diagram
Schéma de principe
Schakelschema