GRAUPNER GmbH & Co. KG
D-73230 KIRCHHEIM/TECK
GERMANY
No liability for printing errors. Technical modifications reserved. #0061368
12/2009
4
4
The brake light and reversing light are switched via the Prop #2 (X4/2) input. This input is looped
between the receiver and the speed controller.
As an option, the steering channel can be looped through input #3 (X4/3). In this case the flashers
(direction indicators) are automatically switched off when the steering returns to centre after the
vehicle has completed a turning manoeuvre. If the steering channel is not connected, the flashers
continue to operate until they are switched off again using the Nautic switches.
The two servos (Prop #5 and #6 output) can be moved to right and left using the corresponding
switches on the Nautic switch module.
The frequency of the warning flasher can be altered by adjusting the trimmer P1.
The speed of the servos can be altered by adjusting the trimmer P2.
“Aircraft” mode:
In this mode of operation the lights are controlled using a proportional channel (e.g. a slider) at the
transmitter. The proportional signal is connected to the Prop #2 (X4/2) input.
In this mode of operation the Light module’s power supply can be drawn directly from the servo
lead / receiver, i.e. it is not essential to connect a separate power supply to terminal X1. However,
in this case you must bear in mind that all the current drawn by the switched outputs flows through
the receiver. This means that the current drain of all the connected loads must not exceed 1.5 A. If
a higher current is required, you must connect a separate power supply to terminal X1.
Two servos can be connected to the Prop #5 and #6 outputs.
The servo at Prop #5 automatically runs to and fro between the right and left end-points
(searchlight).
The servo at Prop #6 can be used for a landing light. When the servo is activated, the servo runs to
the left end-point; otherwise it remains at the right end-point.
The frequency of the four-channel panoramic light and the running light (UFO only) can be altered
by adjusting the trimmer P1.
The speed of the servos can be altered by adjusting the trimmer P2.
Switched outputs:
It is possible to connect LEDs, filament bulbs or similar to the sixteen switched outputs. The
voltage at the outputs is always the same as that of the power supply. It is therefore essential to
include dropping resistors in the LED / bulb circuits.
The value required for the resistors varies according to three different factors:
•
The power supply voltage (U
B
)
•
The voltage of the LED or filament bulb (U
L
)
•
The current drawn by the LED or filament bulb (I)
The value of the resistor can then be calculated using the following formula:
U
B
- U
L
R = ----------
I
Example:
The power supply voltage is 7.2 V, and you wish to connect a white 3.5 V LED which draws a
current of 20 mA (= 0.020 A).
7.2 V
- 3.5 V
R = -------------- = 185 Ohm
0.020 A
However, since a resistor with a value of 185 Ohm does not exist, we take the nearest available
value, in this case 180 Ohm.
Finally the power rating of the resistor also needs to be calculated:
P = (U
B
- U
L
) x I
P = (7.2 V
- 3.5 V) x 0.020 A = 0.074 W
In this case a standard resistor with a power rating of 0.250 W (
1
/
4
W) is adequate.
A separate dropping resistor should be used for each LED or filament bulb.
