GB
Sound module USM-RC-3
11.10.2021
BEIER-Electronic
17
Installation
For a safe installation of the sound speed controller, we recommend to use Velcro
tape on the USM-RC-3 cover.
Pay attention not to connect components and conductor tracks with any metal parts!
This may cause a short circuit, which destroys the USM-RC-3!
Connection
The connection of the supply voltage, the loudspeaker and the outputs are always
the same, regardless of whether the module is operated in Digital, Analog or Mixed
mode.
The remaining wiring (receiver, switching inputs) then depends on which operating
mode is used.
Always switch off power before connecting the module!
The terminal X1 is a spring cage terminal which allows a fast and simple connection
of the sound module. To put a wire in or out, simply push from above onto the
actuating lever of the terminal with a small screwdriver. The wires should be
approximately 7 – 8 mm stripped and should ideally be tin-plated prior the
connection.
Connection of supply voltage (battery):
The sound module is designed for a DC voltage from 5 to 15 V. Just connect
terminal X1/1 with the positive pole and terminal X1/2 with the negative pole of the
supply voltage.
Pay attention to a correct connection of the supply voltage poles!
A wrong connection can destroy the sound module!!!
Generally, the drive battery is used for supply voltage. The best thing is to use a Y-
cable, to connect the sound module and the speed controller simultaneously to the
battery.
If you use a separate battery for the sound module, please connect the
negative poles from both batterie. This avoids possible malfunctions.
If the supply voltage is correctly applied, the green LED on the module lights up.
We absolutely recommend putting the supplied fuse (4A) between the positive pole
of the battery and terminal X1/1. This action prevents damage to your model and the
sound module, if the wiring is faulty or in case of a technical failure.
