tams elektronik WD-1 User manual

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WD-1 n
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Weichendecoder
Motorola-Format n
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Points decoder
Motorola format n
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Décodeur d’aiguillage
Format Motorola n
nAnleitung
Wisseldecoder
Motorola-Format nManual
nMode d´emploi
Handleiding
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Art.-Nr. 21-01-028 / 22-01-028 n

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nDeutsch 3
nEnglish 18
nFrançais 32
nNederlands 46
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© 01/2007 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.
© 01/2007 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.
© 01/2007 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.
© 01/2007 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

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Page 18
Table of contents
How to use this manual 19
Intended use 19
Safety instructions 19
EMC declaration 21
Operation overview 22
Technical specifications 22
Checking the package contents 23
Required tools and consumables 23
Safe and correct soldering 23
Assembling the kit 24
Performing a visual check 28
Connecting the points decoder 29
FAQ 29
Manufacturer's note 30
Certification 30
Conditional warranty 30
Adjusting the digital address 61
Parts list I.1
Printed Circuit Board (PCB) layout (Fig. 1) I.2
Circuit Diagram (Fig. 2) II
Connections (Fig. 3) III
(Pages I to III in the centre of this handbook are removeable.)

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How to use this manual
If you have no specialist technical training, 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
Caution:
Integrated circuits 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.
The kit or the ready-built module can be assembled or operated in
model railways using this manual. It analyzes the digital data in
motorola format sent by the central unit and switches up to four points
or other solenoid accessories.
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. Any other use is
inappropriate and invalidates any guarantees.
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.

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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,
§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.

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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.
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.
EMC declaration
This product is developed in accordance with the European standards
EN 55014 and EN 50082-1, tested corresponding to the EC - directive
89/336/EWG (EMVG of 09/11/1992, electromagnetic tolerance) and
meets legal requirements.
To guarantee the electromagnetic tolerance you must take the
following precautions:

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Page 22
§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 layut included with this manual.
§Use only original spare parts if you have to repair the kit or the
ready-built module.
Operation overview
The central unit sends digital data in motorola format for one of four
points or other solenoid accessories numbered in succession (e.g. 1 to
4, 5 to 8, 9 to 12 etc.) to the points decoder which analyzes the data
and switches the appropriate points. Jumpers are used to select
addresses.
The data flow in the points decoder is as follows: When the central unit
sends data, IC2 on the points decoder checks if the data is assigned to its
address. If so, the data is transmitted to IC1, which chooses the right
points and drives the relevant power transistor to switch the points.
Technical specifications
Supply voltage Digital voltage of the central unit
or 14 – 20 V alternating voltage
Current consumption
(without connected loads) approx. 20 mA
Max. current per output 1.500 mA
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 80 mm
Weight approx. 47 g

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Checking the package contents
Check the contents of the package for completeness after unpacking:
§one kit, containing the components listed in the parts list (see page
I) and one PCB or one ready-built module,
§one manaul.
Required tools and consumables
Make sure you have the following tools and materials ready for use:
§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 (not necessary for the
ready-built module),
§tin solder (0,5 mm diameter),
§wire (diameter: >0,22 mm² for all connections).
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. If you have had training in soldering you can skip this chapter.
§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.

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§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.
§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.
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:

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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
1,5 kΩ brown - green - red (gold)
4,7 kΩyellow - violet - red (gold)
22 kΩred - red - orange (gold)
47 kΩyellow - violet - orange (gold)
100 kΩbrown - black - yellow (gold)
220 kΩred - red - yellow (gold)
330 kΩorange - orange - yellow (gold)
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
1,8 nF 182
3,9 nF 392
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

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voltage sustaining capability higher than required is always
possible.
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.
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.

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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.
Assembling the kit
Start the assembly with the 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. Insert the wire bridges Br1 to Br4, using
the off-cut wires of the resistors.
Continue the assembly with the diodes. Then insert and solder in the
IC-sockets. The sockets must be mounted according to the marking on
the PCB. Continue the assembly with the diodes. Next solder the
capacitors and the transistors.

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!
!
Caution:
Diodes, ICs, electrolytic capacitors and transistors 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.
Then solder the terminal strips X1 to X3 and the solder pins JP1 and
JP7 to JP10. Before mounting, assemble the terminal strips. 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
Due to material defects and/or improper assembly there may be risks of
injury. Transport damage to ready-built modules is also possible. So
you must perform a visual check after the assembly or after unpacking
the module.
Caution:
Do not power up the module yet.
Check all nuts, pins and connections as well as the mechanical
connections for correct assembly. The following points are inapplicable
if you have purchased a ready-built module.
§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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!
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Connecting the points decoder
Caution:
Switch off the central unit before connecting the points decoder!
There are terminal strips soldered to the in- and outputs. Insert the
connecting cables into the relevant terminals and fasten the screws.
The connections diagram (figure 3) shows the correct assembly.
Start by connecting the points with the relevant outputs of the points
decoder. Continue by connecting the central unit to the points decoder,
which has interconnected connection points on two sides. This offers
the possibility of connecting further decoders. It is irrelevant which side
of the decoder you connect to the central unit.
Caution:
Take care to connect the red and the brown wire of the central unit
correctly.
Set how the decoder and the points are supplied with current by setting
a jumper:
connection between 1 and 2: Power supply via the central unit,
connection between 2 and 3: Power supply via a transformer of their own.
Next adjust the required address on the decoder. The table on page 61
shows how to assemble the short-circuit terminations. Then turn on the
central unit and switch the four points to check that they switch
correctly.
FAQ
§Parts are getting too hot and/or start to smoke.
Disconnect the system from the mains immediately!
Possible cause: one or more components are soldered incorrectly.
àPerform a visual check.

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§The points decoder does not work.
Possible cause: The connection of the decoder to the points or to
the central unit is interrupted. àCheck the connections.
Possible cause: The wires from the central unit to the points
decoder are incorrectly connected. àCheck the wiring against the
connections diagram (fig. 3).
Possible cause: The central unit is not operating. àCheck if the
central unit is ready for operation.
Possible cause: The points are defective. àCheck the points.
§The points only work in one direction.
Possible cause: The relevant power transistor (Q2 to Q9) is
defective or mounted in the wrong way. àCheck the transistor.
If you cannot find the problem, please return the module for repair
(address on the cover page).
Manufacturer's note
According to DIN VDE 0869, 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.
Certification
This product conforms with the EC-directive 89/336/EWG on
electromagnetic radiation and is therefore CE certified.
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

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Page 31
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,
§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 the circuitry is changed in any way, through adding or omitting
wiring or components, or through modifying the circuit board,
§if parts other then the original ones 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.

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Einstellung der Adresse / Adjusting the address
Réglage de l’adresse / Instellen van het adres
Beispiel:
Einstellung der Adresse "1"
Example:
Adjusting the address "1"
Exemple:
Réglage de l´adresse "1"
Voorbeeld:
Instellen van adres "1"
Adresse
Address
Adresse
Adres
Weiche
Points
Aiguillage
Wissel
JP7 JP8 JP9 JP10
11 – 4 2 – 3 1 – 2 1 – 2 1 – 2
25 – 8 -- 1 – 2 1 – 2 1 – 2
39 – 12 1 – 2 2 – 3 1 – 2 1 – 2
413 – 16 2 – 3 2 – 3 1 – 2 1 – 2
517 – 20 -- 2 – 3 1 – 2 1 – 2
621 – 24 1 – 2 -- 1 – 2 1 – 2
725 – 28 2 – 3 -- 1 – 2 1 – 2
829 – 32 -- -- 1 – 2 1 – 2
933 – 36 1 – 2 1 – 2 2 – 3 1 – 2
10 37 – 40 2 – 3 1 – 2 2 – 3 1 – 2
11 41 – 44 -- 1 – 2 2 – 3 1 – 2
12 45 – 48 1 – 2 2 – 3 2 – 3 1 – 2
13 49 – 52 2 – 3 2 – 3 2 – 3 1 – 2
14 53 – 56 -- 2 – 3 2 – 3 1 – 2
15 57 – 60 1 – 2 -- 2 – 3 1 – 2
16 61 – 64 2 – 3 -- 2 – 3 1 – 2
17 65 – 68 -- -- 2 – 3 1 – 2
18 69 – 72 1 – 2 1 – 2 -- 1 – 2

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Adresse
Address
Adresse
Adres
Weiche
Points
Aiguillage
Wissel
JP7 JP8 JP9 JP10
19 73 – 76 2 – 3 1 – 2 -- 1 – 2
20 77 – 80 -- 1 – 2 -- 1 – 2
21 81 – 84 1 – 2 2 – 3 -- 1 – 2
22 85 – 88 2 – 3 2 – 3 -- 1 – 2
23 89 – 92 -- 2 – 3 -- 1 – 2
24 93 – 96 1 – 2 -- -- 1 – 2
25 97 – 100 2 – 3 -- -- 1 – 2
26 101 – 104 -- -- -- 1 – 2
27 105 – 108 1 – 2 1 – 2 1 – 2 2 – 3
28 109 – 112 2 – 3 1 – 2 1 – 2 2 – 3
29 113 – 116 -- 1 – 2 1 – 2 2 – 3
30 117 – 120 1 – 2 2 – 3 1 – 2 2 – 3
31 121 – 124 2 – 3 2 – 3 1 – 2 2 – 3
32 125 – 128 -- 2 – 3 1 – 2 2 – 3
33 129 – 132 1 – 2 -- 1 – 2 2 – 3
34 133 – 136 2 – 3 -- 1 – 2 2 – 3
35 137 – 140 -- -- 1 – 2 2 – 3
36 141 – 144 1 – 2 1 – 2 2 – 3 2 – 3
37 145 – 148 2 – 3 1 – 2 2 – 3 2 – 3
38 149 – 152 -- 1 – 2 2 – 3 2 – 3
39 153 – 156 1 – 2 2 – 3 2 – 3 2 – 3
40 157 – 160 2 – 3 2 – 3 2 – 3 2 – 3
41 161 – 164 -- 2 – 3 2 – 3 2 – 3
42 165 – 168 1 – 2 -- 2 – 3 2 – 3
43 169 – 172 2 – 3 -- 2 – 3 2 – 3
44 173 – 176 -- -- 2 – 3 2 – 3
45 177 – 180 1 – 2 1 – 2 -- 2 – 3
46 1 81 – 184 2 – 3 1 – 2 -- 2 – 3
47 185 – 188 -- 1 – 2 -- 2 – 3
48 189 – 192 1 – 2 2 – 3 -- 2 – 3
49 193 – 196 2 – 3 2 – 3 -- 2 – 3

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Adresse
Address
Adresse
Adres
Weiche
Points
Aiguillage
Wissel
JP7 JP8 JP9 JP10
50 197 – 200 -- 2 – 3 -- 2 – 3
51 201 – 204 1 – 2 -- -- 2 – 3
52 205 – 208 2 – 3 -- -- 2 – 3
53 209 – 212 -- -- -- 2 – 3
54 213 – 216 1 – 2 1 – 2 1 – 2 --
55 217 – 220 2 – 3 1 – 2 1 – 2 --
56 221 – 224 -- 1 – 2 1 – 2 --
57 225 – 228 1 – 2 2 – 3 1 – 2 --
58 229 – 232 2 – 3 2 – 3 1 – 2 --
59 233 – 236 -- 2 – 3 1 – 2 --
60 237 – 240 1 – 2 -- 1 – 2 --
61 241 – 244 2 – 3 -- 1 – 2 --
62 245 – 248 -- -- 1 – 2 --
63 249 – 252 1 – 2 1 – 2 2 – 3 --
64 253 – 256 2 – 3 1 – 2 2 – 3 --
65 257 – 260 -- 1 – 2 2 – 3 --
66 261 – 264 1 – 2 2 – 3 2 – 3 --
67 265 – 268 2 – 3 2 – 3 2 – 3 --
68 269 – 272 -- 2 – 3 2 – 3 --
69 273 – 276 1 – 2 -- 2 – 3 --
70 277 – 280 2 – 3 -- 2 – 3 --
71 281 – 284 -- -- 2 – 3 --
72 285 – 288 1 – 2 1 – 2 -- --
73 289 – 292 2 – 3 1 – 2 -- --
74 293 – 296 -- 1 – 2 -- --
75 297 – 300 1 – 2 2 – 3 -- --
76 301 – 304 2 – 3 2 – 3 -- --
77 305 – 308 -- 2 – 3 -- --
78 309 – 312 1 – 2 -- -- --
79 313 – 316 2 – 3 -- -- --
80 317 – 320 1 – 2 1 – 2 1 – 2 1 – 2

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Stückliste - Parts list
Nomenclature - Stuklijst
R1 1,5 kΩ
R2 220 kΩ
R3 22 kΩ
R4 100 kΩ
R5 47 kΩ
R6 330 kΩ
Widerstände
Resistors
Résistances
Weerstanden
R7, R8 4,7 kΩ
C1 100 nF
C2 1,8 nF
C3 3,9 nF
C4 100 µF
C5 10 µF
Kondensatoren - Condensers
Condensateurs - Condensatoren
C6 1000 µF/25 V
D1, D2, D5 - D15 1N4148 *Dioden - Diodes
Diodes - Diodes D3 1N4004 *
Zener-Dioden - Zener diodes D4 ZD 5,1 V *
Q1 BC547B *Transistoren - Transistors Q2-Q9 BD679 *
IC1 4051IC´s - ICs - CI´s - ICs IC2 145027
IC1 16-pol.IC-Sockel - IC-socket
Soquet IC - IC-voetje IC2 16-pol.
X1 12-pol.
X2 3-pol.
Anreihklemmen - Terminal strips
Borniers - Printkroonsteen X3 2-pol.
Stiftleisten - Solder pins
Fiches – Pinstrips JP1, JP7 – JP10 3-pol.