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The following types of power supplies are necessary for using the roboRIO:
You need to connect an external power supply to the roboRIO. The power supply provides the power for the roboRIO I/O channels and the onboard devices.
|Note The power supply voltage for the roboRIO to properly work ranges from 7 V to 16 V.|
Use the COMBICON power connector that ships with the roboRIO to connect the power supply to the roboRIO. The following figure shows the COMBICON power connector.
The following list describes important details about the previous figure:
|The terminal screws secure the wires in the screw terminals.|
|The connector screws secure the power connector on the front panel of the roboRIO.|
Complete the following steps to connect a power supply to the roboRIO:
|Caution Turn off the power supply before you install or remove the power connector from the roboRIO.|
When you connect peripheral devices to the roboRIO, the roboRIO works as the master device and supplies power to the peripheral devices.
The roboRIO contains multiple voltage rails because different ports require different power supplies for the peripheral devices. The following table lists the roboRIO voltage rails for powering the peripheral devices.
|6 V||Power from the PWM port for use with servos.|
Power from the SPI port.
Power from DIO and ANALOG IN ports for sensors.
Power from the MXP port for powering expansion circuits.
|3.3 V||Power from SPI, I2C, and MXP ports.|