Table 4. Power Connector Pinout
Pinout
Pin
Description
V1
C
V2
C
V1
Primary power input
C
Common
V2
Secondary power input
C
Common
Caution
The C terminals are internally connected to each other, but are not
connected to chassis ground. This isolation is intended to prevent ground loops and
does not meet UL ratings for safety isolation. You can connect the C terminals to
chassis ground externally. Refer to the specifications on
ni.com/manuals
for
information about the power supply input range and maximum voltage from
terminal to chassis ground.
If you apply power to both the V1 and V2 inputs, the cRIO-9033 operates from the V1 input.
If the input voltage to V1 is insufficient, the cRIO-9033 operates from the V2 input.
The cRIO-9033 has reverse-voltage protection.
The following NI power supplies and accessories are available for the cRIO-9033.
Table 5. Power Accessories
Accessory
Part Number
NI PS-15 Power Supply, 24 VDC, 5 A, 100-120/200-240 VAC Input
781093-01
NI PS-10 Desktop Power Supply, 24 VDC, 5 A, 100-120/200-240 VAC Input 782698-01
4-Position Gold Power Supply Plugs (Quantity 5)
783529-01
NI 9979 Strain Relief for 4-Position Power Connector
196939-01
Related Information
POWER LED Indicators
on page 17
SD Card Removable Storage
The cRIO-9033 provides an SD card slot that can read from and write to NI-approved SD
cards.
8
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ni.com
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NI cRIO-9033 User Manual
