Robotis RX-28 - Manual (Page 9)

DYNAMIXEL RX-28
Caution Please ensure that the pin assignments are correct when connecting the Dynamixel
actuators. Check the current consumption when powering on. The current consumption
of a single Dynamixel actuator unit in standby mode should be no larger than 50mA
Connection Status Verification
When power is applied to the Dynamixel actuator, the LED blinks twice to confirm its
connection.
Inspection If the above operation was not successful, then check the connector pin assignment and
the voltage/current limit of the power supply.
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