Wiring Power to the NI-7935R

The NI-7935R requires a 9 V to 30 V external power supply that meets the specifications in the NI-7935R Specifications. The NI-7935R filters and regulates the supplied power and provides power for the I/O modules.

Note You can latch the power plug to the NI-7935R using two screws tightened to 0.20 to 0.25 N · m (1.8 to 2.2 lb · in.) of torque.

The maximum wire gage accepted by the power connector plug is 16 AWG. You must use a stripped wire length of 10 mm (.394 in).

When the POWER LED on the front panel is lit green, the device is powered.

The NI-7935R has reverse-voltage protection.

Complete the following steps to connect a power supply to the NI-7935R.

  1. Ensure the power source is turned off.
  2. Connect a positive wire to the positive terminal of the power connector plug, and connect a negative wire to the negative terminal of the power connector plug.

    1378

    1. Positive terminal
    2. Negative terminal
    3. No connect
  3. Install the power connector on the front panel of the NI-7935R.
  4. Turn on the external power source(s).