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LD-G-5
§
Alternative velocity characteristic for mode 28 speed levels (CV#67
1
to 94) *
1
*
Not possible with central units with register programming!
Driving of the motor
With the factory settings the motor is driven with a PWM of 400 Hz. In
case of a noisy or unquiet operation of the motor, the PWM frequency
may be adjusted by changing the values of CV#9.
Velocity characteristic
The decoder can be adjusted to the driving characteristics of the motor
and the characteristic speed of the locomotive type, by setting the
starting velocity and the maximum velocity. From the starting velocity
and the maximum velocity the decoder generates a linear velocity
characteristic.
The operating voltage of the locomotive motor at speed level 1 is set by
adjusting the starting velocity. Normally the motor voltage is adjusted
so that the locomotive just starts to run at speed level 1.
The operating voltage of the locomotive motor at speed level 14, 28
resp. 128 is set by adjusting the maximum velocity. The adjustment
should be such that the locomotive reaches the desired maximum speed
at the highest speed level.
When the speed level mode is set to 28 speed levels, it is possible to
assign any motor voltage to all of the 28 speed levels as an alternative
to the linear velocity characteristic. This allows the programming of a
velocity characteristic which adjusts the individual driving characteristics
of the motor. The set values are saved in the alternative velocity table.
Shunting gear
In the speed modes 14 and 28, it is possible to switch into the shunting
gear mode via a function key, when so programmed. In the shunting
gear mode, the velocity of all speed levels is reduced to approx. 50 %
compared to the set velocity.
English
Page 29
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