Inc Sound Module Decoder - Manual

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zation FULL ON. If the amount of back EMF intensity CV value is too high,

you may see locos jump from one speed to the next if they encounter an obsta-

cle or problem with track work. If the value is too low, there will be very little

speed stabilization effect at all. A higher value makes the intensity or speed

fall-off less. A typical value for most locomotives not part of an advanced con-

sist is CV57=005, but the actual value that is best for a locomotive and train

length must be determined by observation and experimentation. Note that this

value of 005 for this example means that no speed compensation is used when

this decoder is in an Advanced Consist.

When you are using Scaleable Speed Stabilization (Back EMF), you don’t need

to program a large CV value for V-start (CV02) to compensate for sluggish

motors. This is because when scaleable speed stabilization is used, the decoder

will automatically adjust the motor power up to at least the V-start setting, to

achieve the actual speed commanded. This means that low speeds like 3% or

4% of full speed will perform best when CV02 is programmed to 000.

How to set up a loco with Scaleable Speed Stabilization (Back EMF)

1. Install the decoder.

2. Program CV57 (Amount of Back EMF) to a CV value of 005 This

will turn on speed stabilization.

3. Put the loco on level track and run it at approximately 20% of full

speed. Beginning with the default value of 128 in CV55 (Static),

reprogram the CV value to increasingly higher values until you

observe the loco jumping as speed steps increase when you run the

locomotive. Finish this step by reprogramming CV55 to the CV

value just before the jumping started. Ops Mode programming on

the main line works very well here.

4. Follow the same procedure with CV56, beginning with the default

value of 048 and increasing it until you notice the loco oscillating, as

speed is increased. Finish this step by programming CV56 to the CV

value just before the oscillation started.

5. Follow the same procedure with CV57, beginning with the value 05

as programmed in step 1. Increase the CV value in this CV until the

speed when going up hill is roughly equivalent to the speed on level

track. This will yield a best Back EMF intensity consistent with the

locomotive’s characteristics.

6. Keep notes about the CV values you program for these 3 scaleable

speed stabilization control CVs so that you can use them as a start-

ing point for setting up scaleable speed stabilization in similar loco-

motives.