GB Sound speed controller SFR-1
10 BEIER-Electronic 06.02.2019
Installation
For a safe installation of the sound speed controller, we recommend to use Velcro
tape on the SFR-1 cover.
Pay attention not to connect components and conductor tracks with any metal parts!
This may cause a short circuit, which destroys the SFR-1!
Connection
Always switch off power before connecting the module!
Connection of supply voltage (battery)
The SFR-1 is suitable for 6 – 18 V DC. Choose a suitable battery for your motor.
In order to connect the power supply the red cable is connected to the positive pole
of the battery and the black cable to the negative pole of the battery.
For an easy connection, the speed controller is delivered with a Deans T-female
connector, which allows easy plugging and prevents accidental reverse polarity.
If the supply voltage is connected, the green LED on the module lights up.
Pay attention to a correct connection of the supply voltage poles! A wrong
connection destroys the speed controller immediately!!!
Connection of motor
The SFR-1 is suitable for all DC brushed and bell armature motors with a maximum
continuous current of up to 30 A. Up to one minute, a current peak of 60 A is
possible. With the following formula you can easily calculate the required values:
Current (A) = Power (W) / Voltage (V).
The yellow cable is used to connect the positive pole of a motor. The blue cable is
connected to the negative pole of the motor.
In case the driving direction is wrong (forward and backward are opposite), you can
change the connection cables of the motor or you can invert the driving direction in
your Sound-Teacher, see page 55.
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