Inc Sound Module Decoder - Manual

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Notes for TABLE VI:

1. The Kick Start CV provides for a short voltage “kick” when you start

the locomotive decoder from 0 speed. A value of 00 turns this option

OFF.

2. If you program Forward Trim (CV66) & Reverse Trim (CV95) to CV

values of 128, 000, or 001 you will get no scaling effect. A trim

value of 255 will give 200% scaling of the table entry value.

3. A final scaled table value of 255 represents 100% applied motor volt-

age or Full speed. A value of 128 represents 50% applied motor

voltage, i.e., the actual table step entry is multiplied by the appropri-

ate Trim value to yield the final scaled table value that defines the

voltage to apply to the motor.

4. The steps defined in the table are for the 28 speed step mode. Step 4

is the first motion step in the 28 speed step system. Step 31 is the

“full throttle” speed step. When setting up the decoder to run 14 step

mode, only every second entry in the table is used. When 14 speed

steps are used by the command station, the decoder will automati-

cally use the correct CVs and their CV values from the speed table.

5. The suggested CV values given in the example speed table will give a

throttle response curve that most US users will find useful. Once you

have loaded the example table, feel free to modify the CV values to

suit your own preferences.

8.4 CV54 Torque Compensation, Switching Speed &

Decoder Lock Disable

Torque Compensation can improve loco performance by adjusting for the loss

of torque due to high frequency pulse width modulation, PWM, associated with

SuperSonic (silent) operation.

In FX

decoders, CV54 is used to control the decoder’s torque compensation,

switching speed and decoder lock enabled features.

Switching speed gives you fast access to lower speeds used in switching opera-

tions. This feature effectively reduces the throttle’s target speed by approxi-

mately 50% and reduces the effects of accel and decel programmed into the

decoder by 1/4 when the user activates this mode by turning on F6.

The decoder lock feature allows you to program CV values in individual

decoders when there is more than one decoder installed in a locomotive. This

is useful when sound only decoders have been added to a regular mobile

decoder installation.