RoboteQ AX2850 user manual Feedback Potentiometer wiring in Analog Mode

Closed Loop Position Mode

2k - 10k

2k - 10k

Feedback 1

Feedback 2

14 +5V

5 Ground

11 Ana1

10 Ana2

12 Ana3*

8 Ana4*

FIGURE 55. Pot wiring for RS232 or RC Command and Analog Feedback

Feedback Potentiometer wiring in Analog Mode

When the controller is configured in Analog mode, the analog inputs 1 and 2 are used for commands while the analog inputs 3 and 4 are used for feedback. Analog inputs 3 and 4 have different characteristics than inputs 1 and 2, and so require a lower resistance poten- tiometer in order to guarantee accuracy

Note that the analog inputs 3 and 4 are only available on the AX2550 with PCB revision 6.1 or above. The PCB revision can be found on the sticker affixed at the bottom of the case. Roborun will detect the new hardware revision and display Rev B on the screen.

2k

2k

2k - 10k

2k - 10k

Command 1

Command 2

Feedback 1

Feedback 2

14 +5V

5 Ground

11 Ana1

10 Ana2

12 Ana3*

8 Ana4*

FIGURE 56. Pot wiring for Analog Command and Analog Feedback

Analog inputs 3 and 4 have different characteristics than inputs 1 and 2, and so require a lower resistance potentiometer in order to guarantee accuracy.

Important Notice

This wiring is also the one to use when the controller is in Analog mode but switched to RS232 after reset using the method discussed in “Entering RS232 from R/C or Analog mode” on page 136

88 AX2550 Motor Controller User’s Manual Version 1.9b. June 1, 2007