Track section module MX9 Page 17
each sub section) and train number recognition.
A SUB SECTION is half a main section. While each sub section recognizes track occupation
independently, train number recognition and signal controlled speed influence is always carried out
for the main section.
The track sections connected to the 16 outputs of the MX9 (or connections of several MX9’s) are not
fixed to specific functions. Later, the functions will be defined by either a computer with STP software
or the cab. Just remember that two sub sections (A + B) always belong to the same main section
(with the same speed limit commands etc.).
The following are a few examples of how to create and connect track sections to one or several MX9
modules.
Please note the terminology used to indicate section functions by Zimo and STP:
F = Full speed, L = Low speed, U = Ultra low speed, H = Halt (Stop), A = Auto power off.
EXAMPLE –
Simple block control consisting of drive and stop sections
In such an application, one main section equals one block. The two sub sections are the drive (F)
and stop (H) section.
This drawing illustrates one possible track section connection to an MX9, where all sections are con-
nected in series.
MX9
Block 1
Block 2
Block 3
Block 4
F
H
F H F H F
ull speed section
alt section
CAN bus
Track power bus
Driving direction
An alternative hook up is shown in the drawing below. Here, the blocks are connected to two MX9
modules. It is important to note that here too; the two track sections that make up the block are as-
signed to the same main section. What looks like a very inefficient use of track section modules, may
in reality be very practical on a modular layout, for example. This would simplify the wiring between
the layout modules, plus the unused main sections may be used for other blocks on the same layout
module.
MX9
MX9
Block 1
Block 2
Block 3
Block 4
F
H
F H F H F
ull speed section
alt section
CAN bus
Track power bus
Driving direction
Tips on track section lengths:
•
All stop sections on a line between stations whose blocks are made up of F and H sections only,
should be of equal length.
•
The length of a stop section depends on whether the previous section is programmed as a brake
section and on how the loco decoder is set up (i.e. CV #4 for general momentum, CV #50 for “sig-
nal controlled momentum).
A typical stop section length for HO without the use of a brake section is between 5 - 8 feet (1.5 -
2.5m). By implementing a brake section, 1.5 - 2 feet (.4 - .6m) should be sufficient in most cases.
•
The length of an F section may be different in each block but should be at least as long as the
longest train on the layout.
•
It is largely a matter of personal taste on how fast a train should come to a stop. This can be se-
lected by changing the CV’s of the loco decoder. The longer it takes for a train to come to a stop,
the longer the brake and/or stop sections have to be. It is therefore highly recommended to do
some trial runs first and then plan the section lengths for the whole layout exactly.
EXAMPLE –
Blocks with more than two sections
It can be practical for several reasons to divide a block in to 3, 4 or more sections. Some of those
reasons are: increased precision of stop points by reducing speed in an L and/or U section before
stopping or for a more detailed occupancy indication. Some connections of the MX9 may not be used
in case of an uneven quantity of sections. It is not allowed to use sub sections belonging to the same
main section in two different blocks.
C
A
N
C
A
N
MX9
C
A
N
C
A
N
Block 1
Block 2
Block 3
F
L
H
F H F L H
ull speed section
ow speed section
alt sectipn
Direction
Содержание MX9V
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