Connecting the NI-9149 to Power

The NI-9149 requires a 9 V to 30 V external power supply. The NI-9149 filters and regulates the supplied power and provides power for the C Series modules. The NI-9149 has one layer of reverse-voltage protection.

The following table lists the POWER LED indicators.

Table 11. POWER LED Indicators
LED Color LED Pattern Indication
Green Solid The NI-9149 is powered on and the connected power supply is adequate.
— Off The NI-9149 is powered off.

What to Use

  • Screwdriver, 2.54 mm (0.10 in.) flathead
  • Power supply, 9 V to 30 V, 19 Wminimum

NI recommends the power supply listed in the following table for the NI-9149.

Table 11. NI Power Supplies
Power Supply Part Number
NI PS-15 Industrial Power Supply (24 V DC, 5 A, 100 V AC to 120 V AC/200 V AC to 240 V AC input) 781093-01

What to Do

Complete the following steps to connect a power supply to the NI-9149.

  1. Ensure that your power supply is powered off.
  2. Remove the power connector from the NI-9149.
    Caution Do not tighten or loosen the terminal screws on the power connector while the NI-9149 is powered on.
  3. Connect the power supply to the power connector, as shown in the following figure.
    Figure 14. NI-9149 Power Connections

    1378

    Note The C terminals are internally connected to each other.
  4. 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.
  5. Install the power connector on the front panel of the NI-9149.
  6. 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.
  7. Power on the power supply.