Sharp DV-MX1U User Manual download pdf (Page 9)

LokSoundXL User Manual V2.1 05/2002

Connecting headlights

If the total current exceeds 2.0A or a short circuit

occurs, then the overload protection switches

off all function outputs. Once this problem is

fixed all outputs are switched back on.

3.6.1 Connecting headlights

Connect headlights to terminal 2 as shown in figure

3. The light outputs provide the full, rectified track

voltage (between 14 and 25V depending on the type

of transformer). Therefore only use lamps for your

locomotive suitable for this voltage.

In older style locomotives you may find that lamps are

connected to the chassis. (ie.: Märklin®). In this case

don’t make a connection from the lamp back to the

terminal 2-9 and the circuit will be completed via the

chassis.

LED's or 1,5V-lamps are used in many locomotives

and can be used with LokSoundXL decoders: Use a

resistor of about 100 Ohm/0,5 Watt which has to be

soldered between function output and lamp, for each

light output that you want to connect to LED's or

1,5V-lamps. Additionally you have to lower the

brightness of the individual function output per CV.

See 4.2.4.3.

When using 1,5V-lamps it’s not sufficient just to

reduce the brightness per CV: for a short moment

the lamp will get the full voltage due to the used

PWM-mechanism.

3.6.2 Connecting auxiliary functions

You can use outputs AUX1 to AUX6 of LokSoundXL

decoders for functions such as operating a smoke

generator, switching lights, Swiss lighting mode etc.

Please note that the outputs are used for switching of

resistive loads like lamps, smoke generators, relays.

Because of possible voltage peaks due to inductivity

don’t connect the motor directly to the output, use

a relay.

Each output can be connected to terminal 2-9

or to the chassis.

Make sure that the sum of all currents for the

function outputs does not exceed the permitted

current rating and avoid short circuits between

outputs. Although outputs of LokSoundXL

decoders are protected, high voltage on the

terminals or a short circuit may cause damage.

3.7 Connecting a wheel sensor

To synchronize the steam chuff an external sensor

may (but does not have to be) used. The sensor input

is terminal 1-7 on the LokSoundXL decoder. The

LokSoundXL decoder supports reed switches or

mechanical contacts as well as Hall sensors. In many

locomotives mechanical wheel sensors have been fitted

in the factory (e.g. Bachmann or Märklin®).

3.7.1 Connecting a reed contact with magnet

If a reed contact is to be used a miniature magnet

(available at specialized hobby shops) must be attached

to the driving wheel axle in such a way that the magnet

releases the reed contact once every turn. Miniature

reed switches have been proven to be very reliable.

They may be obtained at any electronic specialist store.

Suitable magnets may be bought at model train shops.

(e.g. Mini-track magnets) which might have to be

shaped to fit.

3.7.2 Connecting a mechanical contact

Many locomotives come with a factory fitted

mechanical contact that is connected to terminal 1-4

and 1-7.

All double pole (mechanical) contacts that are isolated

(not in contact with the chassis) may be used.

3.7.3 Connecting a Hall sensor

A Hall sensor is an electronic module that reacts to a

changing magnetic field (like the reed switch but more

reed switch

driving axle

Miniature magnet

figure 7figure 7

figure 7: connecting a wheel sensor

1-1

1-2

1-3

1-4

1-5

1-6

1-7

1-8

1-9

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 35 36

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Sharp DV-MX1U User Manual Page 9

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