Powering the Radio from the controller

Channel 3

Channel 2

Channel 1

Pin 1

15

3:Channel 1 Command Pulses

4:Channel 2 Command Pulses

6:Radio battery (-) Ground

7:Radio battery (+)

8:Channel 3 Command Pulses

8

9

Wire loop bringing power from controller to RC radio and

to optical isolators

FIGURE 48. Wiring for powering R/C radio from controller

R/C Radio

 

 

14

 

Controller

 

 

 

 

 

 

Power

R/C Radio Power

 

 

 

7

Opto-

 

 

 

 

 

 

 

 

 

Isolators

R/C Channel 1

3

 

 

 

R/C Channel 2

4

MCU

 

 

 

R/C Channel 3

8

 

 

 

R/C Radio Ground

6

 

 

5-13

Controller

 

 

 

 

Ground

FIGURE 49. R/C Radio powered by controller electrical diagram

Important Warning

Do not connect a battery to the radio when in this mode. The battery voltage will flow directly into the controller and cause permanent damage if its voltage is higher than 5.5V.

Notice that in this configuration, the controller’s +5V power and ground are connected to the floating (opto-isolated) R/C power inputs so that now the radio and the controller are no longer optically isolated.

AX2500/2850 Motor Controller User’s Manual

77

Page 77
Image 77
RoboteQ AX2550/2850 user manual Powering the Radio from the controller, Wiring for powering R/C radio from controller