Speed matching Tsunami with NCE
I know this is not exactly what you want, but it may give you a starting point. (Looks like you did not get a lot of help on your specific question)
I have several Stewart F3 with a Tsunami 828040 in the A unit and a NCE D13SR non-sound decoder in the B units.Because the Tsunami does not have CV 5 and 6, it is not easy to get the two to operate together in the low to medium speeds where we usually operate. The way I found to get them to work together is to use one of the speed curves that are available in the Tsunami and the BEMF CVs. To use the speed curves you have to set CV29 to allow it.
For the Tsunami units, I set the CV 2,3,4 = 5. You can also set CV2 using POM (Program on the main) set the throttle to speed step 1 and adjust CV 2 to just get movement. CV3 and 4 provide slower movement between throttle settings. CV 10, the BEMF cutoff is set =100. CV 25 is the speed table select (See page 18 of the Tsunami Diesel Sound User Guide) and it seems we would want a speed curve that would increase the response in the low to medium speed range. These would be the exponential curves , CV25 values 10-15. I have use CV25=11 with good results. In order to use speed curves, CV 29 has to be changed to allow speed tables by adding 16 to the current value. Also you want to use 28/128 speed steps for CV29. (See page 16 for values of CV 29) As I have 3 and 4 digit numbers, allow analog operation, 28/128 speed steps and normal operation, i am setting CV29 = 54. The other CVs to set are 209,210, 212, 213 and 214. These were discussed in a MRH post in Jan 2010 called "Tsunami CV's & Back EMF" The first three are set to default values. CV 209 = 25, CV 210 = 20 and CV 212 = 255. These may all ready be those values. CV 213 and CV 214 are set to values between 5 and 10. I have used 8 for both. (Keep both the same value) This has worked out very well and the units have good starting, slow and medium speed operation.
The B units with the NCE decoders were them matched to the A units. Set CV 2 as needed, CV3 & 4 = 5, then adjust CV 5 & CV 6 to match the a unit. With the NCE decoders, there is torque compensation kick rate (CV116) and strength (CV117) I adjusted CV 116 = 4 and CV 117 = 10 These help smooth out motor operation. As I don't have any Tsunami2 decoders at this time, I am not sure what CVs they have available. They do have CV2-6 so these values may be all you need to match the units.
I am using a Lenz DCC with smart consisting. My A units are 3 digits (260, 262 etc) and the B units have 4 digits (2260, 2262 etc.) , This way I can control the functions on the units as needed.
I also have 2 Stewart AS16s , one with a Tsunami and the other with a NCE and most of the same values have worked well except for Cv2 and that required a higher value to get them moving. The values of CV 5 & 6 were increased as needed in the NCE unit for the consist The CV values for the Tsunami F units worked for the AS16
I hope this will provide you with some information that let you consist the units. If i can answer any questions let me know.
Bill
