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
2.0 mm
2
(14 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 NI 9144 to Power
The NI 9144 requires a 9 V to 30 V external power supply. The NI 9144 filters and regulates
the supplied power and provides power for the C Series modules. The NI 9144 has one layer
of reverse-voltage protection.
The following table lists the POWER LED indicators.
Table 1. POWER LED Indicators
LED Color LED Pattern
Indication
Green
Solid
The NI 9144 is powered on and the connected power supply is
adequate.
—
Off
The NI 9144 is powered off.
What to Use
•
Screwdriver, 2.54 mm (0.10 in.) flathead
•
Power supply, 9 V to 30 V, 20 W minimum
NI recommends the power supply listed in the following table for the NI 9144.
Table 2. NI Power Supplies
Power Supply
Part Number
NI PS-15 Industrial Power Supply
(24 VDC, 5 A, 100 VAC to 120 VAC/200 VAC to 240 VAC input)
781093-01
What to Do
Complete the following steps to connect a power supply to the NI 9144.
1.
Ensure that your power supply is powered off.
2.
Remove the power connector from the NI 9144.
Caution
Do not tighten or loosen the terminal screws on the power connector
while the NI 9144 is powered on.
3.
Connect the power supply to the power connector, as shown in the following figure.
NI 9144 Getting Started Guide
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© National Instruments
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