TAMS Elektronik MT-1, MT-2, MT-3 User manual
tams elektronik
Manual
Minitimer MT-1
"Time Switch"
Item 51-01015 | 51-01016 | 51-01017
Minitimer MT-2
"Delayed switching"
Item 51-01025 | 51-01026 | 51-01027
Minitimer MT-3
"Pulse delay"
Item 51-01035 | 51-01036 | 51-01037
tams elektronik
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tams elektronik
English MT-1 | MT-2 | MT-3
Contents
1. Getting started............................................................................3
2. Safety instructions.......................................................................5
3. Safe and correct soldering...........................................................7
4. Operation overview.....................................................................9
5. Technical specifications..............................................................12
6. Assembling the kit.....................................................................13
7. Performing a functional test.......................................................22
8. Connecting the MT-1.................................................................23
9. Connecting the MT-2.................................................................26
10. Connecting the MT-3.................................................................29
11. Check list for troubleshooting.....................................................32
12. Guarantee bond........................................................................34
13. EU Declaration of Conformity.....................................................35
14. Declarations concerning the WEEE directive................................35
Version 2.5 08/2021
© Tams Elektronik GmbH
All rights reserved, in particular the right of reproduction, distribution
and translation. Copies, reproductions and alterations in any form
require the written permission of Tams Elektronik GmbH. We reserve
the right to make technical changes.
Printing the manual
The formatting is optimised for double-sided printing. The standard
page size is DIN A6. If you prefer a larger display, printing on DIN A5 is
recommended.
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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 and connecting 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
checklist for trouble shooting. 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 minitimers MT-1, MT-2 and MT-3 are designed to be operated
according to the instructions in this manual in model building, especially
with model railways. Any other use is inappropriate and invalidates any
guarantees.
The minitimers MT-1, MT-2 and MT-3 should not be assembled or
mounted by children under the age of 14.
Reading, understanding and following the instructions in this manual
are mandatory for the user.
Caution:
The minitimer MT-3 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.
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Checking the package contents
Please make sure that your package contains:
one kit, containing the components listed in the parts list and one
PCB:
MT-1 page 17
MT-2 page 18
MT-3 page 19
or one ready-built module
or one ready-built module in a housing (complete unit).
Required materials
To assemble the kit you will need
a soldering iron with temperature control and a thin tip and a deposit
stand or a controlled soldering station
a scraper, rag or sponge
a heat-resistant pad
a small pair of side cutters and wire strippers
tweezers and flat-nose pliers if necessary
electronic solder (preferably 0.5 to 0.8 mm diameter)
For testing the module you need an electric light bulb.
In order to connect the module you need wire. Recommended
diameters: > 0,14 mm² for all connections.
In order to activate the circuit you need :
MT-1
push-button
e.g. push-button item no. 85-5212x, x=1,2,3,6,7
MT-2
switch
e.g. toggle switch 1xUm item no. 84-51510
MT-3
push-button
e.g. push-button item no. 85-5212x, x=1,2,3,6,7
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In order to connect the devices you possibly need a relay (see sections
8, 9 and 10):
MT-1 relay 12 V e.g. relay 1xUm 12 V, item no. 84-61010
MT-2 relay 5 V e.g. relay 2xUm 5 V, item no. 84-61020 and
protective diode 1N4148, item no.83-11100
MT-3 relay 12 V e.g. relay 1xUm 12 V, Art.-Nr. 84-61010
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 and connecting the circuit to another voltage than
specified,
impermissibly high humidity and 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.
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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.
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.
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Caution:
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.
3. Safe and correct soldering
Caution:
Incorrect soldering can coffe dangers through fires and heat. Avoid
these dangers by reading and following the directions given in the
chapter Safety instructions.
Use a soldering iron with temperature control, which you set to
approx. 300 °C.
Only use electronic solder with a flux.
Never use soldering water or soldering grease when soldering
electronic circuits. These contain an acid that destroys components
and conductor paths.
Insert the connecting wires of the components as far as possible
through the holes of the board without using force. The body of the
component should be close above the board.
Make sure that the polarity of the components is correct before
soldering them.
Solder quickly: soldering for too long can coffe pads or tracks to
become detached or even destroy components.
Hold the soldering tip on the soldering point in such a way that it
touches the component wire and the pad at the same time. Add (not
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too much) solder simultaneously. As soon as the solder begins to
flow, remove it from the soldering point. Then wait a moment for the
solder to flow well before removing the soldering iron from the
soldering joint.
Do not move the component you have just soldered for about 5
seconds.
A clean, non-oxidised (scale-free) soldering tip is essential for a
perfect soldering joint and good soldering. Therefore, before each
soldering, wipe off excess solder and dirt with a damp sponge, a
thick damp cloth or a silicone wiper.
After soldering, cut off the connecting wires directly above the
soldering point with a side cutter.
After assembly, always check each circuit again to ensure that all
components are correctly inserted and polarised. Also check that no
connections or tracks have been accidentally bridged with tin. This
can lead not only to malfunction, but also to the destruction of
expensive components. You can re-liquefy excess solder with the
clean hot soldering tip. The solder then flows from the board to the
soldering tip.
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4. Operation overview
Minitimer MT-1 "Time Switch"
The minitimer MT-1 is designed for controlling operations in model
railways which are supposed to last for 1 to 100 seconds. The desired
switching time is set via a trimming potentiometer.
Examples of use: Automatic opening of the gate at a level crossing after
a certain time, automatic stop of trains at the platform for a certain
time.
The circuit is triggered by a positive switching pulse at the module´s
input, for instance via a key switch or a reed contact. Then the output
is grounded for the preset time.
Devices with a current up to 100 mA intended to be switched on can be
connected directly to the minitimer´s output. Devices with a higher
current or devices intended to be switched off, can be controlled via a
relay. It is also possible to switch over between two devices by
connecting a relay.
Minitimer MT-2 "Delayed switching"
The minitimer MT-2 switches on or off operations in model railways
with a time delay between 0 and 25 seconds. The desired time delay is
set via a trimming potentiometer.
Examples of use: Delay of a locomotive´s start after changing the
signal to "go" (= the engine driver´s reaction time).
The circuit is triggered by grounding the module´s input, e.g. via a
switch. The module´s output is grounded after the preset delay time
has elapsed, the connected device consequently is not switched on until
the delay time is over.
If the earth connection at the module´s input is interrupted, the
connected device is switched off with a time delay of approx. 1 second.
If the time passing between making and interrupting the earth
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connection at the module´s input is shorter than the preset delay time,
the connected device stays off.
Devices with a current up to 100 mA intended to be switched on after a
certain delay time can be connected directly to the minitimer´s output.
Devices with a higher current or devices supposed to be switched off
can be controlled via a relay.
Minitimer MT-3 "Pulse delay"
The minitimer MT-3 transfers voltage changes with a time delay
between 0 and 60 seconds to a connected device on a model railway.
The desired time delay is set via a trimming potentiometer.
Examples of use: Delayed triggering of solenoid operated devices
(signals, points, bistable relay), delayed power cut-off in a rail section
after crossing a reed contact in order to release the contact.
The circuit is controlled by an IC saving the voltage changes´sequence
at the module´s input and transferring them with the preset time delay
between 0 and 60 seconds to the output. The time period between two
voltage changes at the module´s input can be as long as you like. The
IC can save up to seven voltage changes within the preset delay time.
With more than seven voltage changes within the preset delay time the
first saved voltage change will be overwritten.
Devices with a current up to 1.000 mA can be connected directly to the
minitimer´s output. Devices with a higher current or devices intended
to be switched invertedly can be controlled via a relay.
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Minitimer MT-1
A = bridging the
switching inputs
B = voltage at the output
U = voltage
t = time
Δt = on-time
Minitimer MT-2
A = voltage at the input
B = voltage at the output
U = voltage
t = time
Δt = switch-on delay
Minitimer MT-3
A = voltage at the input
B = voltage at the output
U = voltage
t = time
Δt = delay time
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