Connecting Digital Devices - National Instruments NI-9375 Getting Started

The NI 9375 channel registers as ON when the sourcing-output device drives enough
current or applies enough voltage to DI. If no device is connected to DI, the channel
registers as OFF.

Connecting Digital Devices

You can connect a variety of industrial devices, such as solenoids, motors, actuators,
relays, and lamps to the NI 9375. You must connect an external power supply to the
NI 9375. The power supply provides the current for the output channels.
Figure 1. Connecting an Industrial Device to the NI 9375
Caution
any external power supplies connected to the V
powered on.
Attention
système si une alimentation externe connectée aux broches V
est sous tension.
Ensure that the devices you connect to the NI 9375 are compatible with the output
specifications of the NI 9375. Refer to the device datasheet at
output specifications.
Note
When the industrial device is off, DO is not connected to COM. For
large source impedances, you must use a pull-down resistor between DO
and COM. Go to
8
ni.com
NI 9375
Do not install or remove C Series modules from your system if
Ne pas installer ou retirer les modules de la Série C de votre
ni.com/r/cseriesdopulsegen
V
sup
External
+
DO
Power
–
Supply
Device
DO COM
sup
for more information.
NI-9375 Getting Started
and COM pins are
et COM
sup
ni.com/manuals for