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DECELERATION: _DECELERATION: _
DECELERATION: _DECELERATION: _
DECELERATION: _
MOTOR PWM FREQUENCY (CV9)
DCC decoders almost always drive the motor of the locomotive with Pulse Width
Modulation (PWM). This is a series of full voltage pulses that vary in width from very
narrow for low motor speed to very wide providing higher power to the motor.
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PWM FREQ: _PWM FREQ: _
PWM FREQ: _PWM FREQ: _
PWM FREQ: _
How often the pulses are sent is called the frequency. The frequency is adjustable on
some decoders. Settings for this CV vary so consult your decoder manual for the proper
value. If your decoder is capable of ‘silent’ operation usually a 0 is required.
NCE TORQUE COMPENSATION KICK RATE (CV116)
If your decoder supports NCE torque compensation this menu item will be displayed. If
not you will be sent to SET UP FUNCTION MAPPING.
NCE decoders since version 3.5 provide Torque Compensation for smooth low speed
operation. Torque Compensation gives a steady stream of ‘kicks’ to the motor when
running at very low speeds. You can adjust how often the motor is kicked (Kick Rate)
and how hard it is kicked (Kick Strength).
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KICK RATE: _KICK RATE: _
KICK RATE: _KICK RATE: _
KICK RATE: _
CV116 controls the rate. The typical value is 2-4 with the maximum practical value of
about 6. The smaller the number the more often the motor gets a brief voltage kick. A
value of 0 turns off the kick. A value of 1 gives continuous kicks to the motor (not very
useful). When using Torque Compensation set the Start Voltage to 0 for best operation.
NCE TORQUE COMPENSATION KICK DEPTH (CV117)
This is how hard the motor is kicked at low speed. Typical values range from 1 to 40.
High quality motors (Kato) need very little kick strength where lower quality motors such
as old Athearn and LifeLike need relatively large values (30-50) for slow speed crawling,
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KICK DEPTH: _KICK DEPTH: _
KICK DEPTH: _KICK DEPTH: _
KICK DEPTH: _
Tips for setting up T/C (Torque Compensation):
·Start by setting the locomotive speed to 1 on your throttle.
·Adjust the Kick Rate to 4.
·Set the Kick Depth to 20 then adjust this value up or down until the locomotive just
barely crawls.
It may be easier to set the T/C with the body shell removed from the locomotive so that
you can see the flywheels turn. When you get fairly good slow speed operation go back
to the Kick Rate and try bumping the value up by 1 or 2 to see if the operation improves.
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