L
ittfinski
D
aten
T
echnik (
LDT
)
Assembly Instruction
Multi-Digital
4-fold switch decoder
from the
Digital-Professional-Series
!
SA-DEC-4-MM-B
Part-No.:
210311
(With possible external power supply)
>> kit <<
Suitable for the Märklin-Motorola-Format:
(e.g.
Märklin-Digital
∼
[
Control Unit
,
Central Station 1
und
2
],
Intellibox
,
EasyControl
,
ECoS
,
KeyCom-MM
,
DiCoStation
,
EDiTS
,
EDiTS pro
and others)
For the digital control of:
⇒
consumers of up to 2 Ampere on each output
(e.g. illumination, disconnection of track sections from
power).
⇒
jammed turnout- and signal drives
(drives with integrated end switch).
This product is not a toy! Not suitable for children under 14 years of age!
The kit contains small parts, which should be kept away from children under 3!
Improper use will imply danger of injuring due to sharp edges and tips! Please store
this instruction carefully.
red point
Introduction:
You have purchased the 4 fold switch decoder kit
SA-DEC-4
for
your model railway supplied within the assortment of
L
ittfinski
D
aten
T
echnik (
LDT
). The
SA-DEC-4
kit is a high quality product
which is easy to assemble.
We are wishing you having a good time for assembling and
application of this product.
General:
Tools required for the assembly
Please assure that the following tools are available:
•
a small side cutter
•
a mini soldering iron with a small tip
•
solder tin (if possible 0.5mm diameter)
Safety Instructions
•
All electrical and electronic components included in this kit
shall be used on low voltage only by using a tested and
approved voltage transducer (transformer). All components
are sensitive to heat. During soldering the heat shall be applied
for a very short period only.
•
The soldering iron develops a heat up to 400°C. Please keep
continual attention to this tool. Keep sufficient distance to
combustible material. Use a heat resistant pad for this work.
•
This kit consist of small parts which can possibly be swallowed
from children. Children (especially under 3 years) shall not
participate on the assembly without supervision.
Set-Up:
For the board assembly please follow exact the sequence of the
below
assembly list
. Cross each line off as
done
after
completing the insertion and the soldering of the respective part.
For the
diodes
and
zener diodes
please keep special attention
to the correct polarity (marked line for the cathode).The
zener
diode D4
has a
thicker connection wire
suitable for
position
D4
only
.
With reason to different makes of
electrolytic capacitors
you
will find different markings of the polarity. Some are marked with
"+" and some are marked with "-". Each capacitor has to be
assembled to the board that the marking on the capacitor is in
correspondence with the marking on the pc-board.
Integrated circuits (IC`s)
are either marked with a half round
notch on one end or a printed point for the correct mounting
position. Push the IC`s into the socket assuring that the notch or
the point is corresponding with the triangular marking on the pc-
board.
Please attend to the sensitivity of the
IC`s
to
electrostatic
discharge
which will cause immediate damage of the IC. Before
touching those components please discharge yourself by
contacting an earthed metal (for example an earthed radiator) or
work with an electrostatic safety pad.
Please attend to the mark "+" of the
rectifiers.
Some
manufacturers mark the "+" connections additionally with a
longer connection wire. If the rectifier shows as marking a
flattened side this side has to correspond with the marking on the
pc-board.
The
relays
are marked with a thick line on one side. This line has
to correspond to the marking on the pc-Board.
Assembly List:
Pos. Qty. Component
Remarks
Ref.
Done
1
1
Printed circuit board
2
1
Z-Diode BZX ... 5V1
attend to the polarity!
D1
3
2
Diodes 1N4148
attend to the polarity!
D2, D3
4
1
Z-Diode BZX ... 30
attend to the polarity!
D4
5
4
Resistors 1,5kOhm
brown-green-black-brown
R1..R4
6
1
Resistor 18kOhm
brown-grey-black-red
R5
7
1
Resistor 220kOhm
red-red-black-orange
R6
8
1
Resostor 1MOhm
brown-black-black-yellow
R7
9
1
Resistor 330Ohm
orange-orange-black-black R9
10
3
Capacitors 100nF
100nF = 104
C3..C5
11
2
IC-Sockets 18poles
IC1, IC3
12
1
IC-Socket 8poles
IC4
13
1
IC-Socket 6poles
IC5
14
1
Resonator
CR1
15
1
Electrolytic-cap. 100uF/25V
attend to the polarity!
C6
16
1
Electrolytic-cap. 220uF/35V
attend to the polarity!
C7
17
1
Rectifier
attend to the polarity!
GL1
18
1
Push Button
S1
19
4
Relays
attend to the position!
REL1..4
20
2
Clamps 2poles
KL1, KL2
21
4
Clamps 3poles
KL3..KL6
22
1
IC: Z86E0412PSC
attend to the polarity!
IC1
23
1
IC: ULN2803A
attend to the polarity!
IC3
24
1
IC: 93C06 or 93C46
attend to the polarity!
IC4
25
1
IC: 4N25 or CNY17
attend to the polarity!
IC5
Final control
Made in Europe by
L
ittfinski
D
aten
T
echnik (
LDT
)
Bühler electronic GmbH
Ulmenstraße 43
15370 Fredersdorf / Germany
Phone: +49 (0) 33439 / 867-0
Internet: www.
ldt-infocenter
.com
Subject to technical changes and errors.
02/2022 by LDT
Arnold, Digitrax, Lenz, Märklin, Motorola, Roco and Zimo are
registered trade marks.
