Connecting the Controller to Power

The cRIO-905x requires a 9 V to 30 V DC external power supply. The cRIO-905x filters and regulates the supplied power and provides power for the C Series modules.

The POWER LED on the cRIO-905x indicates if the power input is in use, as listed in POWER LED Indicators.

Notice Do not connect the power connector to a DC mains supply or to any supply that requires a connecting cable longer than 3 m(10 ft). A DC mains supply is a local DC electricity supply network in the infrastructure of a site or building.

What to Use

  • Ferrite (included in kit)
  • Screwdriver, 2.54 mm (0.10 in.) flathead
  • Power supply, 9 V to 30 V, 60 W minimum

What to Do

Complete the following steps to connect a power supply to the cRIO-905x.

  1. Ensure that your power supply is powered off.
  2. Install the ferrite (NI part number 781233-02, included in the shipping kit) on the negative and positive leads of the power supply, as shown in the following figure.
    Figure 10. Installing a Ferrite on the Power Leads

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    1. Pass the leads through the ferrite twice, leaving 50 mm to 75 mm (2 in. to 3 in.) between the ferrite and the end of the leads.
    2. Close the ferrite around the leads.
  3. Remove the power connector from the cRIO-905x.
  4. Connect the power supply to the power connector, as shown in the following figure.
    Figure 9. cRIO-905x Power Connections

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  5. Tighten the terminal screws on the power connector to 0.20 N · m to 0.25 N · m (1.8 lb · in to 2.2 lb · in) of torque.
  6. Install the power connector on the front panel of the cRIO-905x.
  7. Tighten the power connector screw flanges to 0.20 N · m to 0.25 N · m (1.8 lb · in to 2.2 lb · in) of torque.
  8. Power on the primary power supply.
    When you power on the cRIO-905x for the first time, the device boots into safe mode. The POWER LED illuminates, the STATUS LED illuminates briefly, and then the STATUS LED blinks twice every few seconds, indicating the controller does not yet have software installed.