National Instruments cRIO-9031, Руководство по началу работы, Страница: 8 / 18

Caution If you use shielded cabling to connect to a C Series module with a plastic
connector, you must attach the cable shield to the chassis grounding terminal using
1.3 mm
2
(16 AWG) or larger wire. Attach a ring lug to the wire and attach the wire
to the chassis grounding terminal. Solder the other end of the wire to the cable
shield. Use shorter wire for better EMC performance.
For more information about ground connections, visit ni.com/info and enter the Info Code
emcground
.
Connecting the cRIO-9031 to Power
The cRIO-9031 requires a 9 V to 30 V external power supply. The cRIO-9031 filters and
regulates the supplied power and provides power for the C Series modules. The cRIO-9031
has a primary power input, V1, and a secondary power input, V2.
The POWER LED on the cRIO-9031 indicates which power input is in use, as shown in the
following table.
Table 2. POWER LED Indicators
LED Color LED Pattern Indication
Green Solid The cRIO-9031 is powered from the V1 input.
Yellow Solid The cRIO-9031 is powered from the V2 input.
— Off The cRIO-9031 is powered off.
Caution Do not connect V2 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
• Screwdriver, 2.54 mm (0.10 in.) flathead
• Primary power supply, 9 V to 30 V, 40 W minimum
• (Optional) Secondary power supply, 9 V to 30 V, 40 W minimum
NI recommends the power supplies listed in the following table for the cRIO-9031.
8 | ni.com | NI cRIO-9031 Getting Started Guide