ZIMO MS450, Instruction Manual

Page: 73 / 88

MS - SOUND decoders MS440 to MS990 and MN - NON-SOUND decoders MN170 to MN340 Page 73
CV Denomination
Range Default Description
CV #277 defines the degree of dependency; the proper
value has to be set by trial.
5.5 #278
Load changing
threshold
0 - 255 10
With this CV, a change in volume in reaction to small load
changes can be suppressed (i.e. in curves) in order to pre-
vent chaotic sound impressions.
Suitable settings can only be determined by trial.
5.5 #279
Load changing
delay
0 - 255 1
This CV determines how quick the sound reacts to load
changes, whereas the factor is not just time but rather
“load-change dependent time” (= the bigger the change
the faster the effect). This CV is also used to suppress
chaotic sound changes.
Suitable settings can only be determined by trial.
5.6 #280
Diesel engine
-
Load dependency
0 - 255 10
With this setting, the diesel motor’s reaction to the load
(defined by PWM and speed step).
NOTE : the sound of
the diesel motor practically always depends on accelera-
tion and speed.
Diesel-hydraulic loco - higher and
lower PWM and performance steps,
Diesel-electric loco - driving/idle
Loco with switchgear - steps.
= 0: no influence motor PWM according to speed
= 1 to 255: increasing to maximum influence
NOTE : It is recommended, first to perform the auto-
mated test run with CV #302 = 75 first (see chapter 5.3).
5.5 #283
Driving noise-
(Steam chuffs)
Volume -
for full acceleration
sound
0 - 255 255
The volume of steam chuffs at maximum acceleration is
set with CV #283 (default: 255 = full volume).
If CV #281 = 1 (acceleration threshold set to 1 speed step),
the volume defined here is applied with each speed in-
crease, even if it is just 1 step.
5.5 #284
Deceleration
threshold
for
reduced volume dur-
ing deceleration
0 -255
(Internal
Speed steps)
1
Steam chuffs should be played back at less volume (or
muted) signifying the reduced power requirement during
deceleration. The sound reduction logic is analog to a re-
versed acceleration (per CV #281 to #283).
= 1: Reduces sound to a minimum (as per CV #286)
when speed is reduced by just 1 step.
= 2, 3 ... sound reduced to minimum after
lowering speed by this number of steps.
5.5 #285
Time needed for the
volume reduction
at deceleration
0 - 255
=
0 - 25 sec
30
After the speed has been reduced, the sound should re-
main quieter for a specific time (analog to the acceleration
case).
Value in CV #285 = time in tenth of a second!
5.5 #286
Volume -
of reduced
driving noise-
at deceleration
0 - 255 20
CV #286 is used to define the chuff volume during decel-
eration (default: 20 = pretty quiet but not muted).
If CV #284 = 1 (deceleration threshold set to 1 speed step),
the volume defined here is applied with every reduction in
speed (even if decreased by just 1 step).
5.3 #287
Threshold
for
brake squeal
0 - 255 50
The brake squeal should start when the speed drops be-
low a specific speed step. It will be automatically stopped
at speed 0 (based on back-EMF results).
5.3 #288
Brake squeal
minimum drive time
0 - 255
=
0 - 25 sec
50
The braking squeal is to be suppressed when an engine is
driven for a short time only, which is usually a shunting run
and often without any cars (it is mostly the cars that are
squealing not the loco itself!).
CV Denomination
Range Default Description
NOTE : Brake squeal sounds can also be assigned to a
function key (see allocation procedure CV #300 = …), with
which the brake squeal can be started or stopped manu-
ally!
5.6 #289
Thyristor
Step-effect
0 - 255 = 1 - 255: Effect of pitch
5.6 #290
Thyristor sound
pitch:
“slow” pitch increase
0 - 255 50 Sound pitch for speed defined in CV #292.
5.6 #291
Thyristor sound
pitch:
Maximum pitch
0 - 255 255 Sound pitch at top speed.
5.6 #292
Thyristor sound
pitch:
slow speed
0 - 255 128 Speed for sound pitch per CV #290.
5.6 #293
Thyristor sound
pitch:
Steady volume
0 - 255 100
Thyristor sound volume at steady speed (no acceleration
or deceleration in progress).
5.6 #294
Thyristor sound
pitch:
Vol. at acceleration
0 - 255 Volume during acceleration
5.6 #295
Thyristor sound
pitch:
Vol. at deceleration
0 - 255 Volume during heavier decelerations (braking)
5.6 #296
Electric motor
Volume
0 - 255 0 Motor sound volume.
5.6 #297
Electric motor
Minimum load
0 - 255 0
Internal speed step at which the motor sound becomes au-
dible; at this speed step is starts at a low volume and
reaches maximum volume as per CV #296 at the speed
step define in CV #298.
5.6 #298
Electric motor
Volume -
Speed dependency
0 - 255 0
Internal speed step at which the motor sound reaches the
maximum volume defined in CV #296.
See ZSP manual!
5.6 #299
Electric motor
Pitch (frequency)
Speed dependency
0 -100 0
The motor sound will be played back faster, correspond-
ing to this CV with rising speed.
= 0: Pitch (speed of play back) will not rise
= 100: Doubling the pitch
5.3 #307
Cornering squeals-
order
Reed configuration
Bit0 - switching input 1 activates cornering squeal
Bit1 - switching input 2 activates braking squeal
Bit2 - switching input 3 activates braking squeal
Bit3 - switching input 4 activates braking squeal
Bit 7 - 0 = key defined in CV #308 suppresses cornering
squeal of reed inputs if this key is ON
1 = key defined in CV #308 activates cornering
squeal independent of Reed inputs
5.3 #308 cornering squeal key 0 - 28 25
0: No key defined. Reed inputs always active.
1-28 = key F1 to F28.