The Signal Logic; Using The Digital Brake Module 5232 In Märklin Motorola Mode; Using A Brake Generator In Dcc Mode - Viessmann 5224 Gebrauchsanleitung

rence is that the route does not branch out but se-
veral routs merge. Therefore the relays are wired
in the opposite way (see chapter block signal lo-
gic).
Important: the signal bus does not require a digi-
tal system. It works in the same manner and wit-
hout any restrictions on analogue layouts!

The Signal Logic

There are not only different types of signals but
the same types may have different functions sub-
ject to their location. Therefore their functionality
changes.
There are two types of logic: the yard signal logic
and the block signal logic. The Viessmann control
module can be set for both types.
The Yard Signal Logic
The normal aspect of a yard signal is "stop". It re-
sponds to the sockets / buttons "Hp0" and "Hp1",
GB
multi-aspect signals also to "Hp2" and "Sh1". The-
se inputs are always active. The input "Hp0" set-
ting the signal to "stop" has preference before all
others. Thus the signal will definitely show the
"stop" aspect if this input is activated.
The input "braking" is only active if you use a bra-
ke generator and have configured the signal ac-
cordingly (see chapter "Using the digital brake mo-
dule 5232" and „Using a brake generator").
If the signal is set to "stop" a track sector relay
5228 will be set in such a way that it disconnects
power from that track sector. If the signal shows
any of the other aspects the power will be recon-
nected.
If you use multi-sector signals or signals carrying
the distant signal of the following main signal on
their mast in yard logic the modules have to be
connected by the
to enable the signals to show the correct aspect.
Block Logic
If you want to use block logic your layout must be
equipped with track occupancy sensors conti-
nuously providing the occupied / clear information.
With Maerklin track this can be achieved by isola-
ting one outer track while track without centre con-
tacts require current guards in individual sectors.
We recommend the Viessmann track occupancy
sensor 5206 for eight separate track sectors.
Each block sector consists of two parts, the run-
ning sector and the stop sector. The running sec-
tor is to be connected to the "Sh1" input and the
stop sector to the "brake" input. The signal modu-
les are to be wired via the signal bus since the oc-
cupancy status mainly influences the preceding sig-
8
Viessmann
signal bus in order
nal. Even in block logic the signal bus may have
branches.
The normal position of the block signal is "pro-
ceed". If the signal bus reports one or two of the
following sectors as occupied then the signal is
automatically set to "stop". Once the signal bus re-
ports a clear line ahead the signal shows "pro-
ceed" again.
This automatic change of aspect also occurs when
due to switching a turnout the signal bus follows
another route and responds to the occupancy
feedback of another control module.
Should a control module be disconnected from the
following signal and does not receive any more in-
formation via the signal bus then the signal will au-
tomatically change to "stop" after a short while.
If the connection to the signal bus is reinstated the
signal will automatically be set to the appropriate
aspect. This also takes place after short waiting
period.
Using the Digital Brake Module
5232 in Märklin Motorola Mode
You may use the Viessmann brake module 5232
regardless of the signal logic. It serves to slow
down a train ahead of stop signal until it stops. The
wiring of the layout has to be done as shown in the
wiring diagram of the brake module. At least one
running sector and a stop or braking sector is re-
quired. Together they have to be as long as the
longest train on the layout plus the braking dis-
tance (see fig. 13).
The brake module 5232 and a track occupancy
module can be wired to the same track sector at
the same time. Thus the brake module can also be
used with block signals.
Using a Brake Generator in DCC
Mode
You may use the brake module regardless of the
signal logic. The brake generator serves to slow
down a train gradually ahead of a stop signal. The
wiring of the layout has to be done as shown in the
wiring diagram of the brake module. At least one
running sector and a stop or braking sector is re-
quired. Together they have to be as long as the
longest train on the layout plus the braking dis-
tance. A track contact or track occupancy sensor
is required at the place where the train should start
to brake for triggering the brake mode (see fig.
11).
The control module for daylight signals has its own
input for the brake generator. If you have configu-
red the module for use with a brake generator,