GB
Sound module USM-RC-3
11.10.2021
BEIER-Electronic
25
Connection of sound module in Analog mode
Connection of motors
In the Analog mode, the driving speed is determined by the motor voltage. One or
two DC motors can be connected to the terminals X1/3 and X1/4 or X1/5 and X1/6.
The connection to the sound module is implemented parallel to the existing
connections of the speed controllers which powers the motors.
However, the sound module does not control the motor here - it only measures the
voltage on the motor. The voltage at the input may not exceed 15 V. A voltage
divider is necessary for higher voltages.
You only need to pay attention to the polarity of the motor connections if the output is
to be used for the reversing light or the reversing sound. If the reversing light lights
up when driving forward, the two connections must be swapped.
Connection of switching-inputs
The switching-inputs at the terminals X2/1 – X2/8 can trigger 8 different functions
(see page
Fehler! Textmarke nicht definiert.
). The input is located at the inner pin
(in the direction of the center of the board). The other two pins have no function in
this mode.
All switching-inputs of the sound module are negative switching. 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-4 or
other standard multi-switch-modules) are used for this purpose. These modules are
normally negative switching, that’s why only the output of the switching module must
be connected to the input of the sound module.
