7
user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
Connecting DC motors
b) Headlights and functions may be connected with
their common to the track voltage (e.g. almost all
Märklin® -engines and older Fleischmann® or
ROCO® engines) as per figure 3
Don’t get confused by the fact that both figure
2 and 3 show how to wire DC - and coreless
motors. How to wire a universal motor (Märklin®)
is shown in figure 5.
• Connect the red wire to the right rail pick-up (or
centre pick-up in AC models), the black wire to the
left rail pick-up (common rails in AC models).
• Connect the backup lights to the yellow wire, the
headlights to the white wire.
• Connect the green wire to the function output
AUX-1. Allocate the function button later.
• Connect the purple wire to the function output
AUX-2. Allocate the function button later.
• Connect the speaker to the two dark-brown wires.
• If the headlights and functions are isolated from
the chassis (see figure 2) connect all commons to
the blue wire. Make sure the blue wire has no
contact to the engine chassis.
3.1.3.1 Connecting DC motors
• Connect the orange wire with the motor terminal,
that was originally wired to the right wheel pick-up
(centre pick-up in AC models).
• The grey wire goes to the terminal, that was
originally connected to the left wheel pick-up
(common rails for AC models).
• Exchanging the wires changes direction of travel.
• Some engines with the Märklin® 5-pole high
performance drive may have 3 RFI suppressors solde-
red to the motor shield.
• The two suppressors that connect the motor
terminals with the motor chassis must be removed
(see figure 4).
3.1.3.2 Connecting universal motors
Figure 5 shows how a universal motor (e.g. AC motor
by Märklin®) is connected to a LokSound decoder:
• Connect the orange wire with the motor terminal
that was originally connected with the center pick-
up.
• Connect the grey wire to the motor terminal that
was originally connected to the common / wheel
pick-up.
• Exchanging the wires will change direction of travel.
• Solder an inductor (choke) with at least 3,9 mH to
each motor terminal. They are available as spare
parts from Märklin® under article number 516520.
• The RFI suppression inductor remains attached to
the collector terminal of the motor and has to be
soldered to the blue wire.
Please note:
If a universal motor is connected LokSound will
automatically deactivate Back EMF Control. The
principle of Back EMF Control does not work
with universal motors.
Figure 4
: 5-pole Märklin® high performance drive
LokSound
grey
orange
blue
alternating
current motor
Figure 5:
Wiring to Märklin® universal motor
inductor
3,9
µ
H
grey
orange
remove capacitor !
