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Sound module USM-RC-2
20
BEIER-Electronic
03.02.2014
Connection of the sound module in analogue mode
Connection of the motors
In the analogue mode, the driving speed is determined by the motor voltage. 1 or 2
DC motors can be connected to the terminals X1/4 and X1/5 or X1/6 and X1/7. The
connection to the sound module is implemented parallel to the existing connections
of the speed controllers which powers the motors.
Only if you want to use the output for the reverse driving light or the reverse driving
sound you have to pay attention to the polarity of the motor connections. If the
reverse driving light shines at the forward drive, the connections must simply be
changed.
Connection of the switching-inputs
The switching-inputs at the terminals X2/1 – X2/4 can trigger 4 different functions
(see page 30). The input is located at the left pin (in the direction of the center of the
board). The other 2 pins have no function in this setup.
If only 1 motor is used for determining the driving speed, the terminals X1/6 and X1/7
are available as additional switching-inputs.
All switching-inputs of the sound module are negative switched. To trigger a function,
you have to connect the negative pole of the power supply to the corresponding
input. Generally switching units (such as our OKA-4, RC-SM-2 or other standard
multi-switch-modules) are used for this purpose. These modules are normally
negative switched, that’s why only the output of the switching module must be
connected to the input of the sound module.
Terminal X1/3 is the switching-input, to turn on and off the engine sound. For
activation, the negative pole (e.g. by a switch module or switch) must be connected
to this input.
As long as the engine sound is switched off, the sound module doesn’t play any
driving sound or engine sound!
Therefore the engine sound has to be switched on by a way available to you!