Programming ESU sound decoders

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GWR_fan
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Programming ESU sound decoders

Postby GWR_fan » Wed Aug 15, 2018 10:06 am

I have a Hornby T9 greyhound that unknown to me when purchased had an ESU sound decoder installed (a Hattons cheap windfall). I have sorted out the loco to get it running but while the sound is fine the loco moves forward in a jerky motion. It pulls away smoothly on speed step '1' on 28 step with no binding (tested smooth on analogue). As the speed builds up the loco jerks fore and aft as it moves forward. I know nothing of tuning ESU sound decoders so would appreciate some advice, please.

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Roger (RJ)
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Re: Programming ESU sound decoders

Postby Roger (RJ) » Wed Aug 15, 2018 11:19 am

See the esu manuals here http://www.esu.eu/en/downloads/instruct ... -decoders/


There is an auto calibration facility built in that might help. It's described in detail. Make sure you have a long enough piece of straight track as the loco will take off like a scalded cat!!!

LokSound V4.0 decoders offer a feature for automatic calibration
of the motor. I most cases this procedure leads to excellent load
compensation characteristics. However, due to the infinite number
of possible combinations of motors and gear boxes a good result
cannot be guaranteed in all cases. But it is certainly worth a try.
Proceed as follows:
• Set the vehicle onto a piece of straight and preferably level track.
This track must be at least as long as to allow the locomotive to
run at full speed for about two seconds. This movement takes
place automatically during calibration. Provide buffer stops or
something similar to prevent the locomotive from running off the
track!
• Call up the locomotive on your throttle and make sure that F1 is
switched off and the throttle is set to speed step 0. Set the direc-
tion of travel as desired.
• Write the value 0 into CV 54 (either on the programming track
or with POM).
• Now press the “F1” button. The locomotive will start running at
full speed automatically. During about 1.5 seconds you will not be
able to control this locomotive!
• The locomotive will automatically stop and the identified load
compensation parameters will be saved in the CVs 51, 52, 53,
54 and 55.
If you wish you can now further optimise the load control param-
eters starting from the calibrated settings.
If at first you don't succeed - cheat
Anyone who is willing to stand for political office isn't fit to be in political office

https://www.modelrailwayforum.co.uk

Rog (RJ)

GWR_fan
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Joined: Sun Apr 29, 2012 11:57 pm
Location: Antipodes

Re: Programming ESU sound decoders

Postby GWR_fan » Wed Aug 15, 2018 3:02 pm

Roger,
many thanks for the detailed explanation.

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Roger (RJ)
Posts: 1341
Joined: Tue May 29, 2007 2:59 pm
Location: Nottingham, UK.

Re: Programming ESU sound decoders

Postby Roger (RJ) » Wed Aug 15, 2018 4:52 pm

You're welcome. Just copied most of it from the PDF manual.
If at first you don't succeed - cheat
Anyone who is willing to stand for political office isn't fit to be in political office

https://www.modelrailwayforum.co.uk

Rog (RJ)


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