Technical Speci Cations - Viessmann 5233 Gebrauchsanleitung

The arrow printed on the feedback decoder
must point in the direction of the digital con-
trol center!
Please note that parts of the decoder are
very sensitive to static electricity!
Plug the special cable carefully onto the con-
tact pin (the pins bend easily)!
Special information for the memory:
Up to six 5233s can be connected to a Memory
from Märklin. The rst decoder in the chain is for
activating the routes of key group "A", and the sec-
ond for deactivating these routes. The third 4233 is
for activating the routes of key group "B", etc. .
Special information for the Intellibox and the
Twin-Center:
The connection is made at the socket marked
"s88". In the basic settings menu, you must en-
GB
ter how many feedback decoders are connected
under the point "s88 settings". Note that for each
two connected feedback decoders 5233, the value
must be increased by 1!
Example:
Six feedback decoders 5233 and one feedback de-
coder 5217 are connected.
The value (6 / 2 + 1) = 4 must be entered.
4. Connecting the Decoder to
the Track
Connecting to (Märklin) third-rail track:
Connect the propulsion power ("B", red = "rt" and
"0", brown = "br") from the digital command station
or the booster to the "Fahrstrom-Eingang" socket
of the feedback decoder 5233.
Now insulate the third-rail at the beginning or the
end of the individual track sections that you want to
monitor (with the third-rail insulators of your track
system manufacturer). Then connect each of the
outputs 1 to 8 of decoder 5233 to one of these
electrically isolated third-rails.
Each power-consuming vehicle (with its own third-
rail pickup) which is located in one of these moni-
tored sections now generates a feedback message
to your digital command station (see Figure 2).
Connecting to two-rail / two-conductor sys-
tems:
Connect the propulsion power ("B", red = "rt" and
"0", brown = "br") from the digital command station
or the booster to the "Fahrstrom-Eingang" socket
of the feedback decoder 5233.
Insulate the track on one side at the beginning and
6
the end of the individual track sections that you
want to monitor (e.g. with insulating track connec-
tors). Then connect each of the outputs 1 to 8 of
the decoder 5233 to one of these electrically iso-
lated rail pro les.
Each power-consuming vehicle (with its own wheel
pickup or with axle insulation bridged with resistor
paint) that is located in one of these monitored sec-
tions now generates a feedback message to your
digital command station (see Figure 3).
Unmonitored track areas:
These areas should be powered via a small ad-
ditional connection (shown at page 11, Figure 5).
This prevents bridging of the track insulation be-
tween monitored and unmonitored sections due to
vehicles travelling over the insulations from caus-
ing interruptions in the occupied message. The
additional circuit guarantees, that the voltage drop
of the digital voltage, caused by the current sen-
sors in the 5233, in the monitored track areas is
the same as in the track areas which are not mo-
nitored. This is to avoid a reduction of the speed of
a locomotive entering the monitored area. This ad-
ditional module can be obtained from Viessmann
under item no. 5234.
Current-free stopping sections:
To be able to monitor stopping section switched to
current-free, the associated switch contact must be
bridged with a resistor of 1.5 kΩ (Viessmann item
number 6836, 10 pieces) as shown in gure 4 at
page 11. This is necessary so that a small moni-
toring current can ow. In the gure this is shown
using a two-rail, two-conductor system, but applies
similarly for Märklin rails.

Technical Speci cations

Dimensions:
Data format:
Track power input:
Maximum input voltage
Outputs 1 – 8:
Maximum load on each output
Maximum load (sum)
Current sensitivity
3
109 x 54 x 23.5 mm
s88-Format
24 V = / ~
3 A
4 A
1 mA