LDT SA-DEC-4 User manual

Littfinski DatenTechnik (LDT)
Kleiner Ring 9 •D-25492 Heist/Germany •Phone: [phone] / 977 381 •Fax: [phone] / 977 382
Littfinski DatenTechnik (LDT)Address Phone
Internet / e-mail Kleiner Ring 9 +49 (0) 4122 / 977 381
http://www.ldt-infocenter.com D-25492 Heist/Germany Fax
[e-mail] +49 (0) 4122 / 977 382
1
Sample Connections: Viessmann Semaphore Signals
with one and two drive units
1. Digital Operation of Viessmann Semaphore Signals with
one Drive Unit (e.g. 4400, 4401, 4405, 4500, 4501, 4505, 4900
and 4901)
Viessmann Semaphore Signals with one drive unit can be operated either via the LDT-Turnout
Decoder S-DEC-4 or the Switch Decoder SA-DEC-4. One signal can be digital controlled by
each output. The following sample connections will show the function.
S1
KL1
KL2
15 ... 24V=
Littfinski DatenTechnik (LDT)
1 2
3 RG 4 RG
red brown
4-fach Magnetartikeldecoder
4-fold turnout decoder
S-DEC-4
Rev. 2.3
+ ~ ~ -
12 ... 18V~
GR R G
K J
L ittfinski D aten T echnik ( LDT )
D-25492 Heist
www.ldt-infocenter.com
Digital-Profi werden!
Magnetartikel-Decoder
S-DEC-4-MM
Multi-Digital
Für 4 Doppelspulenantriebe für Märklin-Motorola
Digitalsysteme. Schaltstrom: 1 Ampere pro
Ausgang.
È È
rot
red
braun
brown
Vom Modellbahntrafo
From transformer
Von Steuereinheit oder Booster
From command station or booster
braun
brown
gelb
yellow
R
Semaphore Signal with one drive unit connected to the Turnout Decoder S-DEC-4-MM or S-DEC-4-DC

Littfinski DatenTechnik (LDT)
Kleiner Ring 9 •D-25492 Heist/Germany •Phone: [phone] / 977 381 •Fax: [phone] / 977 382
Littfinski DatenTechnik (LDT)Address Phone
Internet / e-mail Kleiner Ring 9 +49 (0) 4122 / 977 381
http://www.ldt-infocenter.com D-25492 Heist/Germany Fax
[e-mail] +49 (0) 4122 / 977 382
2
S1
1 2
COM COM
3 4
red brown
K J
COM COM
Littfinski DatenTechnik (LDT)
KL1
12 ...18V~
15 ... 24V=
4-fach Schaltdecoder
4-fold Switch Decoder
SA-DEC-4
Rev. 2.4
L ittfinski D aten Technik (LDT )
D-25492 Heist
www.ldt-infocenter.com
Digital-Profi werden!
Mit 4 bistabilen Relais für Märklin-Motorola
Digitalsysteme. Schaltstrom: 4 Ampere pro
Ausgang.
Schaltdecoder
SA-DEC-4-MM
Multi-Digital
rot
red
braun
brown
Vom Modellbahntrafo
From transformer
Von Steuereinheit oder Booster
From command station or booster
braun
brown
gelb
yellow
R
È È
Semaphore Signal with one drive unit connected to the Switch Decoder SA-DEC-4-MM or SA-DEC-4-DC

Littfinski DatenTechnik (LDT)
Kleiner Ring 9 •D-25492 Heist/Germany •Phone: [phone] / 977 381 •Fax: [phone] / 977 382
Littfinski DatenTechnik (LDT)Address Phone
Internet / e-mail Kleiner Ring 9 +49 (0) 4122 / 977 381
http://www.ldt-infocenter.com D-25492 Heist/Germany Fax
[e-mail] +49 (0) 4122 / 977 382
3
2. Digital Operation of Viessmann Semaphore Signals with
two drive units (e.g. 4402, 4502 and 4902)
As semaphore signals with two wings require eventually only one control command for a new
signal aspect with both wings there is a control module implemented within the connection of the
signal with two drive units to assure the required intersection.
For the selection of the control system Viessmann has themselves orientated to positive control
impulses as used by the Märklin system.
LDT Decoder produces negative control impulses. For controlling turnouts or signals with
solenoid drives or uncoupling devices the polarity of the control impulses are not important.
2.1. For the application of decoder with negative switch impulses Viessmann offers a suitable
control module by a respective request.
S1
KL1
KL2
15 ... 24V=
Littfinski DatenTechnik (LDT)
1 2
3 RG 4 RG
red brown
4-fach Magnetartikeldecoder
4-fold turnout decoder
S-DEC-4
Rev. 2.3
+ ~ ~ -
12 ... 18V~
GR R G
K J
L ittfinski D aten T echnik ( LDT )
D-25492 Heist
www.ldt-infocenter.com
Digital-Profi werden!
Magnetartikel-Decoder
S-DEC-4-MM
Multi-Digital
Für 4 Doppelspulenantriebe für Märklin-Motorola
Digitalsysteme. Schaltstrom: 1 Ampere pro
Ausgang.
È È
rot
red
braun
brown
Vom Modellbahntrafo
From transformer
Von Steuereinheit oder Booster
From command station or booster
braun
brown
gelb
yellow
Control
module
Steuer-
modul
negative Schaltimpulse
negative switch impulses
Semaphore Signal with two drive units on the Turnout Decoder S-DEC-4-MM or S-DEC-4-DC with control
module for negative switch impulses (supplied by Viessmann by respective request or realized by turning the
diodes at the control module as explained under 2.2).

Littfinski DatenTechnik (LDT)
Kleiner Ring 9 •D-25492 Heist/Germany •Phone: [phone] / 977 381 •Fax: [phone] / 977 382
Littfinski DatenTechnik (LDT)Address Phone
Internet / e-mail Kleiner Ring 9 +49 (0) 4122 / 977 381
http://www.ldt-infocenter.com D-25492 Heist/Germany Fax
[e-mail] +49 (0) 4122 / 977 382
4
2.2. Even with low experience in soldering electronic components you can easily rebuild a
module for negative switch impulses out of a control module with positive switch impulses. You
have just to unsolder all 4 diodes of the control module, turn them by 180 degree and re-solder
them at the old position.
The connection plan at the previous page shows how to connect the LDT-Decoder
S-DEC-4-MM or the S-DEC-4-DC to a two wings semaphore signal.
2.3. The next sample connection shows the possible application of a semaphore signal with two
drive units and a control module for positive switch impulses (as supplied ex-factory by
Viessmann together with the signal) with LDT-Decoder. It is possible to use our switch decoder
SA-DEC-4-MM or SA-DEC-4-DC for this application.
The wiring corresponds to the sample connection within the Viessmann operation instruction for
the signal. The switch decoder includes 4 potential-free switch contacts for digital control.
S1
1 2
COM COM
3 4
red brown
K J
COM COM
Littfinski DatenTechnik (LDT)
KL1
12 ...18V~
15 ... 24V=
4-fach Schaltdecoder
4-fold Switch Decoder
SA-DEC-4
Rev. 2.4
L ittfinski D aten Technik (LDT )
D-25492 Heist
www.ldt-infocenter.com
Digital-Profi werden!
Mit 4 bistabilen Relais für Märklin-Motorola
Digitalsysteme. Schaltstrom: 4 Ampere pro
Ausgang.
Schaltdecoder
SA-DEC-4-MM
Multi-Digital
È È
rot
red
braun
brown
Vom Modellbahntrafo
From transformer
Von Steuereinheit oder Booster
From command station or booster
braun
brown
gelb
yellow
Control
module
Steuer-
modul
positive Schaltimpulse
positive switch impulses
Semaphore Signal on the SA-DEC-4-MM or SA-DEC-4-DC with control module for positive switch impulses.

Littfinski DatenTechnik (LDT)
Kleiner Ring 9 •D-25492 Heist/Germany •Phone: [phone] / 977 381 •Fax: [phone] / 977 382
Littfinski DatenTechnik (LDT)Address Phone
Internet / e-mail Kleiner Ring 9 +49 (0) 4122 / 977 381
http://www.ldt-infocenter.com D-25492 Heist/Germany Fax
[e-mail] +49 (0) 4122 / 977 382
5
To be able to a digital switching of a three-aspect signal are two decoder addresses respectively
outputs required. Via the address 1 will be the signal switched to “Stop” and “Proceed”. With the
address 2 will be the semaphore signal switched to “Slow approach”.
The signal will be switched as follows:
"Stop"Output 1 ON
"Proceed"Output 1 OFF; Output 2 ON
"Slow approach"Output 1 OFF; Output 2 OFF
If you want an automatic switching of the signal (with MEMORY or with a computer software),
is this possibility recommended.
But if you intend to switch the signal via a KEYBOARD or a remote control it is recommended
to use the first solution by using the Turnout Decoder S-DEC-4 because then it will be required
to activate just one key to switch the signal.
Subject to technical changes and errors.
03/2015by LDT