Cv's For Onboard Lgb Dcc

andyspencer

andyspencer

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Hi all,

Trying to alter the smoke terminals output voltage on my Kleine Dicke, but not having a lot of luck...

This is the version with the voltage control board and DCC decoder all as one circuit board. I though following the CV's for the 55021 decoder might work, but it appears the smoke terminals are not F1, so cv49 doesn't affect it...

I've also just gone through the 55027 cv's, I thought I was getting somewhere. I can work out that it is F1 that I want to change the voltage on, but all that seems to happen is mess up the directional lighting or I manage to make F1 on when the button is off, and F1 off when I call the function on... HELP !!

CV53= 64
CV54= 2 (so set for function 2 button)
 
That looks like the sheet I'm after, will be a job for programming in the morning. :)

I have another board which came out of this loco originally, that in analogue mode, would only run in reverse - I can't see a cv setting that would cause this?? Likely to be a fault on the PCB its self? Digital operation is fine though.
 
It's a Massoth chip and is refereed to as the LGB Onboard gross ME V3.4.

The template available is available in the Massoth DCC programmer or the more recent Massoth Service Tool where, as stated above, CV56 controls the voltage for the F2 output. The output is normally controlled as smoke off/on from the F7 key.

NB CV 54 is NOT the setting for the function 2 button!

The LGB Large Onboard board should look like this (layout/connections defined on page 7 of the earlier referenced pdf file:

lgb onboard decoder 3A ex 20520.jpg
 
Thanks for the reply. That's the twin motor decoder board isn't it?

I do seem to be getting somewhere now, but the smoke unit doesn't appear to make very much smoke. The heater element is still good, but I don't know if its possible its damaged its insides by being too hot in the past...
 
They do vary from unit to unit.. It may be a little 'tired', or have you over filled it?
Little and often seems to generate the best effect..
 
I may have filled it a little too much to start with... But even when I'd go the correct amount, it still didn't really work, unless I blew down the chimney. I'd get a nice puff of smoke, but would stop as soon as I stopped blowing.
 
andyspencer said:
I may have filled it a little too much to start with... But even when I'd go the correct amount, it still didn't really work, unless I blew down the chimney. I'd get a nice puff of smoke, but would stop as soon as I stopped blowing.
Click to expand...

Increase the value of the voltage divider for that output by '1', and then try again..*

*Supposing this divider does not affect any other accessories, of course.

I have found values between '4' and '8' have been necessary to get similar effect from different loco's. - This for a black / white wired 5V smoke unit.
 
andyspencer said:
Thanks for the reply. That's the twin motor decoder board isn't it?....
Click to expand...

The twin motor decoder is also fitted to single engine locos as well (e.g. the popular 2-6-2 variants).

The "Little Plump" loco may be fitted with the same chip as the older non MFX small RhB tractors which I think is also a Massoth chip.

It should look like this:

69800105.jpg


Glad that your getting it to work. You can still buy them from http://www.modell-land-service.de/ for about 30 euro

PhilP's comprehensive replies have covered your smoke question.
 
Will have another look later in the week. I did read somewhere that LGB recommend a setting of 4 or 5, but that sounded a little bit too low. Can you run the oil too hot that it goes beyond smoking? Was worried about getting it too hot, aside from damaging the actual element.

Thats the board that I've got, in fact it came out of a RhB tractor as the original was playing up. But now I've got the correct CV list, I'll have another go with that one. :)
 
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