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Marklin Braking Module - decoders not working properly with braking modules
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Offline rhfil  
#1 Posted : 28 October 2025 18:04:40(UTC)
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rhfil

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Joined: 05/09/2014(UTC)
Posts: 769
Location: NEW HAMPSHIRE, Somersworth
There has been some discussion of non-Marklin locos reacting oddly with Marklin Braking Modules 72442. They seem to go into analog mode - reversing direction and going into high speed. Has anyone discovered a solution to the problem? I have seen some discussion which suggests changing a cv in the locos can prevent the problem. Which cv and what setting?
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Offline Goofy  
#2 Posted : 28 October 2025 19:22:48(UTC)
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Goofy


Joined: 12/08/2006(UTC)
Posts: 9,332
With DCC protocol this is the following process:
CV 29 at value 6
CV 50 Bit 1: analog DC on 1 or you write value 6 with DCC protocol too.
CV 27 at value 48 ( check after Bit 4 and 5). Value at 48 are for the fx/mfx. If you read Bit 4 it´s for the DC standard polarity against the direction of travel. Bit 5 are DC standard polarity with the direction of travel.

This is what you set with Märklins sound decoder.
What other manufacture says it stand in theirs manual how to set.
Hopeful will this help if not less you try with Viessmanns brake modul instead?
H0
DCC = Digital Command Control
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Offline DaleSchultz  
#3 Posted : 01 November 2025 02:25:57(UTC)
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DaleSchultz

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Joined: 10/02/2006(UTC)
Posts: 4,031
Location: In the process of moving to the UK
Hi Richard,

The best solution is to avoid braking modules. As you suspect, the expected behaviour is not well defined, mostly because it is an analog control mechanism in a digital environment. The whole idea behind digital control is full control of the loco at any time, by a central controller. Braking modules are a 'hack' born of a lack of understanding/software to make the loco slow and stop digitally.

Dale
Dale
Intellibox + own software, K-Track
My current layout: https://cabin-layout.mixmox.com
Arrival and Departure signs: https://remotesign.mixmox.com
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Offline Goofy  
#4 Posted : 01 November 2025 11:11:57(UTC)
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Goofy


Joined: 12/08/2006(UTC)
Posts: 9,332
Originally Posted by: DaleSchultz Go to Quoted Post
Hi Richard,

The best solution is to avoid braking modules. As you suspect, the expected behaviour is not well defined, mostly because it is an analog control mechanism in a digital environment. The whole idea behind digital control is full control of the loco at any time, by a central controller. Braking modules are a 'hack' born of a lack of understanding/software to make the loco slow and stop digitally.

Dale


That´s way I do not use brake modul.
For many years ago when Märklin did used C90 decoder I did tested a Märklin brake modul but did found out lot of work must done and lot of planning to install brake moduls for a big layout.
The second problem are cost of the products.
Just 5 track install and with brake moduls its hugh of prices!
The third problem are to use 28 or 126 speed steps.
In this way you have to set value correct and the distance of the break must fit perfect.
If you control your train via cab control by increase or decline speed step you have fully control better way and you play as locomotive engineer as prototype too.

H0
DCC = Digital Command Control
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Offline BenP  
#5 Posted : 01 November 2025 12:18:52(UTC)
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BenP

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Joined: 04/02/2021(UTC)
Posts: 533
Location: USA
Originally Posted by: rhfil Go to Quoted Post
There has been some discussion of non-Marklin locos reacting oddly with Marklin Braking Modules 72442. They seem to go into analog mode - reversing direction and going into high speed. Has anyone discovered a solution to the problem? I have seen some discussion which suggests changing a cv in the locos can prevent the problem. Which cv and what setting?


There is no need for braking modules when driving digitally. Loc decoders do this, or the control station.
(Tell this to your train club ;-)
Ben
Digital M track layout with vintage rolling stock and accessories controlled by CS3+Rocrail; small Z scale layout.
https://youtube.com/play...0kgVYbh0CeDTF-bYXoD_2-V9
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Offline mmervine  
#6 Posted : 01 November 2025 14:10:50(UTC)
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mmervine

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Joined: 30/01/2006(UTC)
Posts: 1,898
Location: Keene, NH
To ensure good brake module performance, make sure the DC analog mode is disabled on your decoder. Each manufacturer approaches this differently. A friend of mine did some detective work and found the following:

Loksound 5 CV27=24
Zimo CV27=24
D&H CV27=48
Piko CV27=48

The difference is what bits are use to disable DC analog.

mark
Märklin C-track, Marklin Digital & ECoS, multi-era French & Swiss
http://www.ete-ene.org/m...mervines-layout-gallery/
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Help in Setting CV values for Marklin decoder 60972 to handle Marklin braking module 72441/72442 (Digital)
by Bill L 08/12/2021 22:27:35(UTC)
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