ZIMO MX695 Instruction Manual Download Page 38

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Page 38

Large-scale Decoder & Sound Decoder MX695/6/7/9

For STEAM and

DIESEL engines

gines), where the fan is only set-up for chuff beats or
during start-ups and cruising speeds.

With CV # 355, however, the fan speed is adjusted at
a standstill, so that even in this state smoke is dis-
charged (to a lesser extent).

Example -

The following CV’s must (should) be programmed as follows:

“Old” design of the “ZIMO TR92-101”

(recognizable by the brass mounting brackets):

CV #137, #138, #139 = 60, 90, 120 respectively: (IMPORTANT) The heating element of the USA Trains

smoke generator is designed for maximum 9V, which requires that the voltage of that function output
is limited. This is done with suitable values in CV #137, 138 and 139. The above values can be ad-
justed to some extent according to need and track voltage.

CV #353 = …i.e. 10: shuts the smoke generator off automatically to prevent overheating (In this example

“10”: after 250 seconds).

CV #351, 352 = ...only for diesel engines when effect code “80” is selected in the applicable CV for

1…FO6. This defines the fan speed (PWM-voltage) for start-up (default: maximum smoke) and

cruising (default: medium smoke); see CV table.

CV #355 = ... for steam and diesel engines. Defines the fan speed (PWM-voltage) at standstill (usually for

very little smoke output).

“ZIMO TR92-101” design after September 2015

(without brass mounting brackets):

If the heating element is connected to

24V (Common positive)

and function output (FO1…FO8):

CV #137, #138, #139 = 50, 75, 110 respectively: (IMPORTANT) The heating element of the smoke generator

(with the ZIMO added 15 Ohm resistor) is suitable for about 10V maximum, so the voltage has to be
limited in all cases through PWM (Pulse With Modulation) with a CV #139 value of “110” and for the
other CV’s correspondingly lower values (about 40% and 60%, which can of course be varied indi-
vidually).

If the heating element is connected to

18V (Common positive

with track voltage of 18V or adjustable low-

voltage output set to 18

– 19V) and function output (FO1…FO8 as ground):

CV #137, #138, #139 = 65, 100, 150 respectively: (IMPORTANT) The values are set a little higher than in the

example above (about 25% higher, since the available 18V is 25% lower than 25V).

All other CV’s are the same as in the example for the “old” design; listed here again for the sake of complete-

ness:

CV #353 = …i.e. 10: shuts the smoke generator off automatically to prevent overheating (In this example

“10”: after 250 seconds).

CV #351, 352 = ...only for diesel engines when effect code “80” is selected in the applicable CV for

FO1…FO6. This defines the fan speed (PWM-voltage) for start-up (default: maximum smoke) and
cruising (default: medium smoke); see CV table.

CV #355 = ... for steam and diesel engines. Defines the fan speed (PWM-voltage) at standstill (usually for

very little smoke output).

Wires: blue (Fan positive, 5

– 6 V, to fan output)

yellow: (Fan ground)
red: (Heating element positive)
green: (to FO1…FO8)

5.24

Configuration of Electric Uncouplers

“System KROIS” and “System ROCO”

When one or two of the function outputs

FO1…FO6

(but not FO7 or FO8)

are assigned to the

uncoupler function (CV #127 for FO1 etc.), the control of the couplers as well as the entire un-
coupling process is defined by the settings in

CV #115 and CV #116.

These CV’s limit the pull-in time (to prevent overheating), define a hold-in voltage if required (i.e.
System “Roco”) as well as the automated coupler unloading and train disengagement.

It is recommended to use the following settings for the

Krois system:

CV #115 = 60, 70 or 80;

these settings will limit the pull-in time (full track power) to 2, 3 or 4 seconds respectively. A hold-in
voltage is not required for the Krois coupler and the ones digit can therefore remain at

“0”.

Notes to automated uncoupling

(a.k.a. “Coupler waltz)

- The automatic train disengagement is active if the tens digit in CV #116 is other than 0; if desired with prior

coupler unloading (when CV #116 > 100).

- The automatic train disengagement (or the preceding coupler unloading) is started at the same time the

coupler is activated, but only if the train is standing still (speed 0); if the train is still moving, the uncoupling,
unloading and disengagement procedure won’t start until the train comes to a full stop.

The procedure terminates when the “temporary” function key is released (or pressed again if in latched

mode), or when the predetermined times (CV #115 for the coupler, CV #116 for the disengagement) have
expired.

- The uncoupling and disengagement process is aborted immediately if the speed regulator is operated at the

same time.

- The driving direction for the train disengagement is always according to the cab setting; directional settings

in the “special effects” definition for uncoupling (Bits 0 and 1 of CV #127, CV #128 etc.) will not be applied.

Designation

Range

Default

Description

#115

Uncoupler control

“Pull-in” time

and

“hold” voltage

or use

CV # 115

for an alternative second

dim value

(dimming 0-90% using

ones digit; tens digit must

be 0)

0 - 99

The uncoupler

function is only active if “uncoupler” is

selected (value 48) in one of the CV’s #125…132:

Tens digit (0

– 9): Time in seconds the coupler re-

ceives full voltage (pull-in time):

Value: 0 1 2 3 4 5 6 7 8 9

seconds: 0 0,1 0,2 0,4 0,8 1 2 3 4

Ones digit (0 to 9): hold-in power in percent of track
voltage, 0 - 90%. Applied after the pull-in time
elapsed (necessary for ROCO coupler, not needed
for KROIS coupler).

#116

Automatic disengage-

ment during uncoupling

0 - 99,

0 - 199

Tens digit (0

– 9): Length of time the loco should

move away (disengage) from the train; coding as in
CV #115.

Ones digit (0

– 9) x 4 = Internal speed step applied

for disengagement (Momentum per CV #3 etc.)

Hundredths digit = 0: No unloading.
= 1: Coupler unloading: engine
moves toward train in order to relieve coupler ten-
sion, before uncoupling and disengaging from the