ZIMO MX695, Инструкция по эксплуатации

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Page 24 Large-scale Decoder & Sound Decoder MX695/6/7/9
The Motor Brake
This brake is useful for vehicles without worm gears to prevent them from rolling away on inclines, picking
up speed on declines as well as to prevent a heavy train from pushing a standing engine downhill.
CV Designation Range Default Description
#151 Motor Brake 0 - 9 0
= 0: Brake not active
= 1 … 9: The motor brake is gradually actuated (over
a period of 1, 2 … 8 seconds, up to full braking pow-
er by shorting both motor end stages) if the target
speed is not held (not slowing down), even though
the motor is no longer energized.
The higher the value, the faster and harder the brake
is being applied.
Tens digit: 1-9: Reduction of the motor regulation if
consist-key is active. The values 1-9 reduce the con-
trol to 10%-90% of the value set in CV #58.
5.7 Acceleration and Deceleration:
The basic acceleration and deceleration times (momentum) are set with
CV’s #3 and #4
according to the relevant NMRA standard, which demands a linear progression (the time be-
tween speed step changes remains constant over the whole speed range).
For simple smooth drivability use values 3 or higher but for really slow starts and stops start with
a value of 5. Values over 30 are rarely practical!

A
sound project in sound decoders always comes with different values in CV’s #3 and #4 (as well
as many other CV’s) than what is listed in the CV charts. Often the sound can only be played
back correctly in conjunction with the acceleration times provided by the sound project (or certain
minimum values), so the sound project’s default values should therefore not be changed too
much.
Acceleration and deceleration behavior, especially starting and stopping, can be further im-
proved by the “exponential” and “adaptive” acceleration/deceleration features (CV’s #121, 122
and 123).
To eliminate a start-up jolt after changing the direction, caused by gear backlash in gearboxes,
use CV #146:
Some free play between gears of a drivetrain is essential to prevent them from binding. This
creates backlash and may be more severe on some engines than on others, especially when
fitted with a worm gear or an excessively worn gearbox.
Excessive backlash leads to a peculiar behavior especially after changing the direction: When
the motor starts turning in the opposite direction it doesn’t move the engine right away because
it has to eliminate the backlash first. And to make matters worse, the motor starts to accelerate
already during this phase. When the engine finally starts mov
ing, the motor’s speed has ex-
ceeded the normal start-up rpm, which results in an unpleasant jolt. This can be avoided with
the help of CV #146.
CV Designation Range Default Description
#3 Acceleration Rate 0 - 255
(2)
The value multiplied by 0.9 equals’ acceleration time
in seconds from stop to full speed.
The effective default value for sound decoders is usu-
ally not the value given here, but is determined by the
loaded sound project.
#4 Deceleration Rate 0 - 255
(1)
The value multiplied by 0.9 equals’ deceleration time
in seconds from full speed to a complete stop.
The effective default value for sound decoders is usu-
ally not the value given here, but is determined by the
loaded sound project.
#23
Acceleration
Trimming
0 - 255
0
To temporarily adapt the acceleration rate to a new
load or when used in a consist.
Bit 0 - 6: entered value increases or decreases
acceleration time in CV #3.
Bit 7 = 0: adds above value to CV #3.
= 1: subtracts above value from CV #3.
#24
Deceleration
Trimming
0 - 255
0
To temporarily adapt the deceleration rate to a new
load or when used in a consist.
Bit 0 - 6: entered value increases or decreases
deceleration time in CV #4.
Bit 7 = 0: adds above value to CV #4.
= 1: subtracts above value from CV #4.
#121
Exponential
Acceleration
0 - 99
0
Acceleration time (momentum) can be stretched in the
lower speed range:
Tens digit: Percentage of speed range to be
included (0 to 90%).
Ones digit: Exponential curve (0 to 9).
EXAMPLE:
CV #121 = 11, 23 or 25 are typical initial test values.
#122
Exponential
Deceleration
0 - 99 0
Deceleration time (momentum) can be stretched in the
lower speed range:
Tens digit: Percentage of speed range to be
included (0 to 90%).
Ones digit: Exponential curve (0 to 9).
EXAMPLE:
CV #122 = 11, 23 or 25 are typical initial test values.
#123
Adaptive
Acceleration and De-
celeration
0 - 99 0
Raising or lowering the speed to the next internal step
occurs only if the preceding step is nearly reached.
The tolerance for reaching the preceding step can be
defined by this CV (the smaller this value the smooth-
er the acceleration/deceleration)
Value = 0: no adaptive acceleration or deceleration
Tens digit: 0 - 9 for acceleration
Ones digit: 0 -
9 for deceleration
= 11: strongest effect; sometimes makes the start im-
possible (engine
won’t move)
#394
Bit 4: Quicker accel-
eration
From SW-Version
0 - 255 -
Bit 0 = 1: Light flashes at switch gear sound.
Bit 4 = 1: Quicker acceleration with sound playing
back
“heavy load when speed regulator is moved