RoboteQ Dual Channel Digital Motor Controller AX500 用户手册

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to the controller does not inject power into the controller. The figure below show the cable 
with the loop cut. Figure 56 shows the equivalent electrical diagram.

In this operating mode, the AX500 will accept commands from a Radio Control receiver 
used for R/C models remote controls. The speed or position information is communicated 
to the AX500 by the width of a pulse from the R/C receiver: a pulse width of 1.0 millisec-
ond indicates the minimum joystick position and 2.0 milliseconds indicates the maximum 
joystick position. When the joystick is in the center position, the pulse should be 1.5ms. 

Note that the real pulse-length to joystick-position numbers that are generated by your R/C 
radio may be different than the ideal 1.0ms to 2.0ms discussed above. To make sure that 

8

9

15

Pin 1

Channel 1

Channel 2

3: 

Channel 1 Command Pulses

4: 

Channel 2 Command Pulses

6: 

Radio battery (-) Ground

7: Radio 

battery 

(+)

8: 

Channel 3 Command Pulses

Channel 3:

Cut red loop

FIGURE 55. Wiring when receiver is powered by its own separate battery

Controller
Power

R/C Radio Power

Cut

Radio

Battery

R/C Radio

R/C Channel 1

R/C Channel 2

R/C Radio Ground

Controller
Ground

R/C Channel 3

14

3

7

8

6

5-13

4

MCU

FIGURE 56. Electrical diagram for connection to independently powered RC radio