RoboteQ AX3500 user manual Connecting to Slave Controllers, Servo Connection to RevB Controllers

Connecting to Slave Controllers

In most applications, however, a separate power supply must be provided to power the servos., as shown in Figure 42.

To RC Output of

Master AX3500

FIGURE 41. AX3500 to Low-Power Servo Connection

To RC Output of Master AX3500

External 5-6V

Supply

FIGURE 42. AX3500 to Standard or Heavy Duty Servo Connection

Note: When attempting to supply power from the AX3500 to a standard or heavy duty servo, the current will surge every time the servo attempts to move will cause the control- ler to reset.

Servo Connection to RevB Controllers

On AX3500 with PCB version 3.0 or higher, the 5V rail on the RC Output pins is NOT con- nected to the controller’s internal 5V and is floating instead. It is therefore necessary to bring the power supply for the servos to any one of the 8 headers as shown in Figure 43.

To Any Empty Header on AX3500

To RC Output of Master AX3500

To Servo Power Supply or Battery

FIGURE 43. Connecting Servo and its Power Supply on RevB hardware

Connecting to Slave Controllers

When connecting the AX3500 to other Roboteq slave controllers, care must be taken that the 5V outputs that is present on the Master’s RC Output connector, and on the 5V output of the Slave connectors (pin 14), are not physically connected to one another. Otherwise, when a controller is powered On, it will be supplying 5V, and thus be powering other con- trollers. This will stress and possibly damage the DC/DC converter of the powering control-

AX3500 Motor Controller User’s Manual 73