tams elektronik LD-G-14 User manual

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LD-G-14 n
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Lastgeregelter Lokdecoder
für Gleichstrommotoren
Motorola-Format n
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Locomotive Decoder
with load control for
DC engines - Motorola format nAnleitung
nManual
Décodeur avec compensation de
charge pour locomotive avec
moteur continu - Format Motorola nMode d´emploi
nHandleiding
Lastgeregelde Locdecoder
voor gelijkstroommotoren
Motorola-format n
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Art.-Nr. 22-01-081 n

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nDeutsch 3
nEnglish 30
nFrançais 56
nNederlands 82
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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

English LD-G-14
Page 30
Table of contents
How to use this manual 31
Intended use 31
Safety instructions 32
EMC declaration 34
Operation overview 34
Technical specifications 38
Checking the package contents 39
Required tools and materials 39
Safe and correct soldering 39
Mounting the locomotive decoder 40
Programming the locomotive decoder 44
Operation 52
FAQ 53
Manufacturer's note 54
Certification 54
Conditional warranty 54
Connections (Fig. 1, 2 and 3) I
Circuit Diagram (Fig. 4) II
(Pages I to II in the centre of this handbook are removeable.)

LD-G-14 English
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!
How to use this manual
Even if you have no specialist technical training, this manual gives step-
by-step instructions for safe and correct fitting of the 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 module on to another person, please pass on the manual
with it.
Intended use
The locomotive decoder is designed for mounting in a model train with
DC motor. It evaluates the Motorola format data sent by the digital
central unit to its address and controls the locomotive´s motor and
additional functions.
The module should not be mounted 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.
Caution:
Integrated circuits (ICs) are inserted on the decoder. They 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.

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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,
§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.
§Mounting the module 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 module.

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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.
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 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, mounting
and operation 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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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:
§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, print layout and circuit diagram included with this
manual.
§Use only original spare parts if you have to repair the module.
Operation overview
The decoder is designed for operation in Motorola II format and can be
adjusted to one of 255 addresses. It evaluates the digital data sent by the
central unit to its address. It controls the locomotive’s motor and the
driving characteristics. In addition, it switches four function outputs,
which can for instance be used for the locomotive’s lighting.
In Motorola I format it is possible to operate the decoder, but the
programming of the parameters and the controlling of the functions is
restricted.
Automatic recognition of the analogue mode
The decoder can also be used in analogue model railway layouts run with
an A.C. speed control. When putting the locomotive on the rails the
decoder recognizes automatically if it is run in analogue or digital mode
and sets the corresponding operation mode. The automatic recognition of
the analogue mode can be switched off by programming the decoder
accordingly.

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The decoder is not suitable for being operated in analogue model railway
layouts run with an D.C. speed control. The decoder evaluates the data
received in such layouts as "braking section", the locomotive therefore
does not run.
In analogue mode the decoder reacts to the analogue changing
direction signal. The lighting is always switched on according to the
direction of travel. Switching on or off the lighting and the additional
functions is not possible.
Driving of the motor
The locomotive decoder drives the motor with a PWM of 16 kHz. This
guarantees a soft and constant run of the motor, with which the
decoder can also be used with coreless (Faulhaber) motors.
Load control
The locomotive decoder has a load control. The load control influences the
motor voltage to keep the locomotive at constant velocity, independent of
additional loads (e.g. running up a gradient, coupled carriages).
The decoder chooses automatically the optimal values of the load
control´s parameters for the connected motor. The range of values
from which the decoder chooses the optimal value can be altered by
programming the decoder accordingly.
Direction of motion
When changing the direction in digital operation the existing direction is
saved and so retained, even if the central unit does not send absolute
driving data (e.g. in Motorola I format).
In order to change the direction of travel in analogue operation a
voltage impulse is applied to the rails which is distinctly higher than the
normal driving voltage. Disturbances from the locomotive motor,
tolerances in the connected components or voltage drops in the rails
can release unintended changes of direction or hinder intended changes
of direction. The voltage needed for a change of direction can be
adjusted by programming the decoder accordingly.

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Speed level
The decoder can drive 27 speed levels. Driving all 27 speed levels can
be done only with central units which support this mode (e.g.
MasterControl). With central units which only allow 14 speed levels
only, it is only possible to select every second speed level.
Velocity characteristic
The decoder can be adjusted to the individual
driving characteristics of the motor and the
characteristic speed of the locomotive type, by
setting the starting velocity and the maximum
velocity. From the starting velocity and the
maximum velocity the decoder generates a
velocity characteristic corresponding to the
opposite figure. This characteristic allows a
good fine tuning of the speed in the lower
speed range.
Shunting gear
The auxiliary function F4 allows you to switch into the shunting gear
mode. In the shunting gear mode the velocity of all speed levels is
reduced to ca. 25 % compared to the standard velocity.
Acceleration and brake delay
It is possible to program the acceleration and brake delay individually.
You can switch the acceleration and the brake delay on or off by
operating the function key F3. Even if the acceleration and the brake
delay are active you can actuate an emergency stop via the central unit
by reversing the direction of travel.
Function outputs
The decoder has four function outputs which can be switched on and
off via the function keys „function“ and / or the auxiliary function keys
F1 to F4. They are available to connect optional accessories (e.g.
lighting, smoke generator, sound module, electric coupling).
x = speed grade
y = motor voltage

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The set states of the function outputs are saved. Even if the decoder is
without current for a longer time, the states are set when the decoder
is switched on again.
Assignment: You can assign the function keys to the function outputs
freely. It is possible to assign several function keys to one function output.
Each function output can be programmed in such a way that it can be
switched
§independent of the direction of travel with all function keys or
§dependent of the direction of travel with all function keys or
§dependent of the direction of travel with F0 („function“) and
independent of the direction of travel with F1 to F4.
Example of use: The lighting of a shunting locomotive is assigned both
to the function key „function“ as to the function key F4. In shunting
operation you switch the lighting via F4 and in standard operation
according to the direction on travel via „function“.
Dimming: All function outputs can be dimmed individually.
Example of use: The electric bulbs of older locomotives made for
analogue operation can be dimmed and thus must not be exchanged
after the mounting of the decoder.
Example of use: The front lighting is assigned to two different function
outputs. Via one function key you can switch the standard lighting, via
another the long distance lighting.
Flash lights: It is possible to program a flash light for all function
outputs. Two flashing phases are available out-of-phase by 180
degrees. Example of use: individual flash lights or alternating flash
lights.
CV programming
Setting the address, the driving characteristics (starting and maximum
velocity, acceleration and brake delay) and the velocity characteristic
and adjusting the decoder to the particular locomotive motor (motor
frequency, voltage for change of direction, load control parameters) as
well as the definition of the function outputs´characteristics is done by

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programming the configuration variables (= CV). The CV programming
has been laid down for DCC decoders in the NMRA guidelines. The CV
programming for this Motorola decoder has been developed following
these guidelines, but differs in some points, according to the differences
between both formats. In particular programming the decoder on a
DCC programming-track is not possible.
Online programming
Alternatively to the CV programming it is possible to program the
address and the driving characteristics "online". This means:
§Right after starting the programming mode your can enter the new
address and directly save it.
§While programming the driving characteristics (starting and
maximum velocity, acceleration and brake delay) the locomotive is
running. By operating the speed knob the driving characteristics are
altered. As soon as these are set as desired, they can be saved
directly (online).
Restrictions in Motorola I format
The auxiliary functions F1, F2, F3 (switching on and off the acceleration
and brake delay) and F4 (switching on and off the shunting gear) are
not available in Motorola I format. Programming the decoder can only
be done via CV programming.
Technical specifications
Data format Motorola I and II
Supply voltage 12-24 Volt digital voltage
Current consumption
(without connected loads) approx. 10 mA
Max. current for motor 3.000 mA
Max. current per function output 1.000 mA
Max. total current 3.000 mA
Protected to IP 00
Ambient temperature in use 0 - + 60° C

LD-G-14 English
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!
Ambient temperature in storage -10 - + 80° C
Comparative humidity allowed max. 85 %
Dimensions approx. 26 x 19 x 7,5 mm
Weight approx. 3,5 g
Checking the package contents
Check the contents of the package for completeness after unpacking:
§one decoder
§one manual
N.B. For technical reasons it is possible that the PCB is not completely
inserted. This is not a fault.
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, a wire stripper and a pair of tweezers,
§wire, diameter: >0,05 mm² up to a current of 1 A resp.
>0,14 mm² (from a current of more than 1 A),
§tin solder (0,5 mm. diameter).
§When the total current consumption is more than 1,5 A: a heat
sink, e.g. a SMD heat sink with a base of 7 x 19 mm.
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.

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§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.
§Apply the soldering tip to the soldering spot in such a way that the wire
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.
§The joint should be held still for about 5 seconds after soldering.
§To make a good soldering joint you should 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.
§After soldering check (preferably with a magnifying glass) tracks for
accidental solder bridges and short circuits. This would cause faulty
operation or, in the worst case, permanent 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.
Mounting the locomotive decoder
Before mounting the decoder check if the locomotive motor´s current is
below the maximum permissible value of 3.000 mA. If it is above 3.000
mA the decoder is not suitable for mounting in this locomotive. It would
be damaged when put into operation.
Follow the connections diagrams (fig. 1, 2 and 3)!

LD-G-14 English
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!
Connecting the motor
Open the locomotive housing. Locate the position for the decoder.
Disconnect the motor from the rail current collector or the change-over
switch from the motor and rails if you have a locomotive with electronic
change-over switch. The change-over switch is no longer necessary,
you can remove it.
Caution:
The interference suppression devices mounted to the motor or the
connecting wire must not be removed! Motor and interference
suppression devices are one unit. If even one part is removed, it can
cause extreme interference!
Solder the connection to the slider at point X1, and the connection to
the housing to point X2. These two connections can be exchanged
without effecting functionality.
Solder the connections to the motor at the points X11 and X12. In case
the locomotive´s direction of motion does not match the direction of
motion set at the central unit you should swap the connections at the
points X11 and X12.
Connecting the lighting and other accessories
Before connecting the accessories check if the current is below the
maximum permissible value of 1.000 mA. If accessories with a current
of more than 1.000 mA are connected the decoder will be damaged
when put into operation. Please note that the maximum total current
for motor and accessories should not exceed 3.000 mA.
Disconnect any existing diodes in the leads to the lamps.
Connect the lamps and other accessories to the function outputs (X4 to X7)
on the front of the decoder. The assignment of the function outputs to the
function keys can be altered by setting the configuration variables.
If the lamp or the accessory is already connected with one side to
locomotive ground, the connection is complete. If not, connect the
second side of the lamp or the accessory to the return conductor of the
decoder (point X3).

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!
!
If you want to use the decoder factory settings, you have to connect
the lighting and the accessories as follows:
Front lighting: X5
Back lighting: X4
Accessory to be switched via F1: X7
Accessory to be switched via F2: X6
In case you want to operate the decoder in analogue mode and want to
switch the lighting depending on the direction of travel, you have to
connect the front and back lighting to the points X5 and X4
respectively.
Caution:
The return conductor for all functions (point X3) must under no
circumstances be connected to locomotive ground. Possible short
circuit! The locomotive decoder will be damaged in operation.
Tip: If the second side of the lamps is connected to locomotive ground
the lamps often flicker in operation. You can avoid the flickering of the
lamps if you connect the second side to the return conductor (point X3)
instead of locomotive ground.
Caution:
If you connect the lamps to the return conductor for all functions (point
point X3), the lamps must be insulated. The lamps must not make
contact with metal parts of the locomotive. Possible short circuit! The
locomotive decoder will be damaged in operation.
Connecting the LEDs
The function outputs of the locomotive decoder switch against decoder
ground. For that reason you must connect the cathode (-) of the LED to
the output of the relevant function.
Caution:
If you use light-emitting diodes (LEDs) you must always operate them
via a series resistor. The series resistors differ depending on the current
and the model. Calculate the proper value or ask for it when purchasing
the LED.

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!
!
!
You can connect severel LEDs each with a series resistor of it´s own in
parallel to one output. If you connect several LEDs to one output in
series, only one series resistor is needed.
Fixing the locomotive decoder
After completing all connections fix the locomotive decoder with double-
sided adhesive tape, for example.
Caution:
The locomotive decoder can get warm during operation. For that
reason it should not be covered with shrinking hose or hot adhesive.
Caution:
When the total current consumption is more than 1,5 A you should cool
the decoder. As a heat sink you could use a SMD heat sink with a base
of 7 x 19 mm. Fix the heat sink on the diodes D1 to D4, using an
appropriate glue ( e.g. super glue ). Take care that the heat sink does not
contact the adjoining IC1. Risk of short circuit!
Using an NEM 652 interface connector
Some locomotives already have an NEM 652 interface connector
mounted. Using a convenient connecting plug you save disconnecting
the connections and you do not need to solder at the locomotive.
Contact Connection Colour of cable Connecting points
1Motor connection 1 orange X12
2Lighting back (-) yellow X4
3Not used or F1 green X7
4Power supply left black X2
5Motor connection 2 grey X11
6Lighting front (-) white X5
7Common conductor
for all functions (+) blue X3
8Power supply right red X1

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Programming the locomotive decoder
With the most digital control units supporting the Motorola II format
(e.g. Tams MasterControl, Märklin* Control Unit, Uhlenbrock*
Intellibox) you can choose between two methods of programming after
having started the programming mode:
1. CV programming
2. Online programming
With the Central Station or the Mobile Station of Märklin* you can
program the address, the maximum speed and the acceleration and
brake delay. Select the article no. 29750 from the locomotive database
and program the decoder as described for this article in the Central
Station´s or Mobile Station´s manual.
Starting the programming mode
Put the locomotive on a track oval. If you want to program the decoder
via CV programming it is sufficient to put the locomotive on a track
section. Please note: You must connect the track oval or track section
to the control unit´s track output and not to control unit´s output for
the DCC programming track
Reset the central unit (by simultaneously pushing the buttons "stop"
and "go"for some time) or quickly switch f the central unit on and off.
First enter the current address or the address "80" (e.g. if you do not know
the current address). Manufacturers setting is "78". Set all functions
(function, f1 to f4) to "off".
Push the "stop" button at the central unit. Next, operate the direction
switch and hold it in that position while briefly pushing the "go" button.
As soon as the lamps of the locomotive flash (after approx. 2 seconds)
the decoder is in the programming mode and you an release the
direction switch. Now you can programm the decoder either by setting
the configuration variables (CV) or "online".

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For current address
or address 80:
Set MM I Format.
.
Switch on the central unit or
perform a reset at the central unit.
YES
NO
Intellibox?
Push button „stop“
àSwitch off the track voltage.
Operate the direction switch and hold it in
that position. Briefly push the button „go“.
As soon as the lighting flashes,
release the direction switch.
NO
Intellibox?
Set the current address or address 80.
Set all functions to "off".
Start CV-programming or one of
4 online-programming steps
Starting the programming mode
Set address back
to Motorola II
format.
YES

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Page 46
Notice: Some types of central units do not allow you to access to the
programming mode when the Motorola II format is set (e.g. Intellibox
from Uhlenbrock*). These central units must be set to Motorola I
format for the current address or the address "80". As soon as the
decoder is in the programming mode, the central unit must be set back
to Motorola II format.
CV programming
This programming method follows the standards for the DCC format by
the NMRA. Please note: It is not possible to program this Motorola
Decoder via the DCC programming track!
After having started the programming mode (and when the
locomotive´s lighting flashes) you can program the configuration
variables (CV) as follows:
1. Choose the CV you want to programm by setting the CV´s number
as Motorola locomotive address at your central unit.
2. Operate the direction switch. The locomotive´s lighting stops
flashing.
3. Set the desired value of the CV by setting the CV´s value as
Motorola locomotive address at your central unit.
4. Operate the direction switch again. The locomotive´s lighting starts
flashing again.
Repeat the steps 1 to 4 for all CVs you want to program. In order to
choose a variable for programming or to enter a value for a variable
you have to confirm the entered number like selecting a Motorola
locomotive address. Please note: If you have a multi protol control you
have to define the Motorola format for the particular address. The
locomotive´s lighting shows which kind of entry the decoder expects:
§locomotive´s lighting flashes àentry of a CV´s number
§locomotive´s lighting stops to flash àentry of a CV´s value
In order to stop the programming mode push "stop".

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CV-name CV-
no. Input value / (State of
delivery)
Remarks
Address 11, 2, 3 ... 255
(78)
Starting velocity 21, 2, 3 ... 80
(16) =The voltage to be output to the
motor at speed level 1.
The value "0" corresponds to 0
Volt, the value "80" to the max.
voltage.
Acceleration
delay 31, 2, 3 ... 80
(5) =Length of the delay before the
switching to the next higher
speed level when the locomotive
is accelerating.
Braking delay 41, 2, 3 ... 80
(5) =Length of the delay before the
switching to the next lower
speed level when the locomotive
is braking.
Maximum
velocity 51, 2, 3 ... 63
(54) =The voltage to be output to
the motor at the highest speed
level.
Analogue mode 62, 3 (3) 2=on, 3=off
7--- Only internal importance. Do not
enter new values for this CV.
Reset 81, 2, 3 ... 255
(---) Any value restores the settings
in state of delivery.