BEMF control in analogue operation

[Cliff George]

Does anyone know of any DCC decoders where the BEMF control is active in analogue operation?

I have looked in some decoder manuals and I know that some ESU decoders do claim to have this feature. I couldn't find out anything about Massoth or Lenz decoders, and I don't have any analogue controllers to try it out with.

The reason I want to know is that someone asked me how he could add BEMF control to his conventionally controlled battery loco. I though I could put a pre configured DCC decoder between the output of the ESC and the motor this would add the feature he was looking for.

This may not be the most cost effective way of adding this feature but it has got to be easier that designing a custom circuit given that I can't find any ESCs that already have BEMF control.

 

[Railway42]

Hi on LGB 55021/22 decoders it is available if CV9 motor pulse is 16kh. Switch load comp on or of with analog CV54 it will not work with motor pules below 16kh. Analog is DC volts not PWM from a ESC. I dont know of any ESC with BEMF feedback control most are 1-4kh.

 

[beavercreek]

Cliff
In my experience with the decoders that I use:
The ESU decoders V3.5 (lokpilot and loksound) and above do have this feature(called 'load control')
QSI quantum and titan sound decoders
Massoth can using CV49-Bit2 (they call it 'load control')

 

[Cliff George]

Thanks Mike and Railway42,

Ah yes I see now. In Massoth decoders bit 2 of CV 49 is the analogue load control on/off so it does work. also in the Analog section of the Massoth Configuration manual it says analog load control can be activated. I should have looked closer.