National Instruments CompactRIO cRIO-9074XT User manual
USER MANUAL AND SPECIFICATIONS
NI cRIO-9074XT
Reconfigurable Embedded Chassis with Integrated Intelligent Real-
Time Controller for CompactRIO
Figure 1. CompactRIO cRIO-9074XT
NI cRIO-907x
1
3
5
2
4
6
7
8
POWER
FPGA
STATUS
USER1
DO NOT SEPARATE CABLES WHEN
ENERGIZED IN HAZARDOUS LOCATIONS
SAFE MODE
CONSOLE OUT
IP RESET
NO APP
USER1
NO FPGA
LINK
LINK
10/
100
10/
100
RESET
INPUT
19-30 V
20 W MAX
TRIGGER
V
C
NC
C
1. LEDs
2. RS-232 Serial Port
3. RJ-45 Ethernet Port 2
4. RJ-45 Ethernet Port 1
5. SMB Connector
6. Power Connector
7. Reset Button
8. DIP Switches
This document describes how to connect the cRIO-9074XT to a network and how to use the
features of the cRIO-9074XT.
Safety Guidelines
Operate the cRIO-9074XT only as described in this document.
Caution Do not operate the cRIO-9074XT in a manner not specified in this
document. Product misuse can result in a hazard. You can compromise the safety
protection built into the product if the product is damaged in any way. If the product
is damaged, return it to NI for repair.
Safety Guidelines for Hazardous Locations
The cRIO-9074XT is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous
locations; Class I, Zone 2, AEx nA IIC T4 and Ex nA IIC T4 hazardous locations; and
nonhazardous locations only. Follow these guidelines if you are installing the cRIO-9074XT in
a potentially explosive environment. Not following these guidelines may result in serious
injury or death.
Caution Do not disconnect the power supply wires and connectors from the
controller unless power has been switched off.
Caution Do not disconnect I/O-side wires or connectors unless power has been
switched off or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched off or the area is
known to be nonhazardous.
Caution Substitution of components may impair suitability for Class I, Division 2.
Caution For Division 2 and Zone 2 applications, install the system in an enclosure
rated to at least IP54 as defined by IEC/EN 60079-15.
Special Conditions for Hazardous Locations Use in Europe and
Internationally
The cRIO-9074XT has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO
Certificate No. 12 ATEX 1202658X and is IECEx UL 14.0089X certified. Each device is
marked II 3G and is suitable for use in Zone 2 hazardous locations, in ambient temperatures
of -40 °C ≤ Ta ≤ 70 °C.
Caution You must make sure that transient disturbances do not exceed 140% of
the rated voltage.
Caution The system shall only be used in an area of not more than Pollution
Degree 2, as defined in IEC 60664-1.
Caution The system shall be mounted in an ATEX/IECEx-certified enclosure with
a minimum ingress protection rating of at least IP54 as defined in IEC/EN 60079-15.
2| ni.com | NI cRIO-9074XT User Manual and Specifications
Caution The enclosure must have a door or cover accessible only by the use of a
tool.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) stated in the product specifications. These requirements
and limits provide reasonable protection against harmful interference when the product is
operated in the intended operational electromagnetic environment.
This product is intended for use in industrial locations. However, harmful interference may
occur in some installations, when the product is connected to a peripheral device or test object,
or if the product is used in residential or commercial areas. To minimize interference with
radio and television reception and prevent unacceptable performance degradation, install and
use this product in strict accordance with the instructions in the product documentation.
Furthermore, any changes or modifications to the product not expressly approved by National
Instruments could void your authority to operate it under your local regulatory rules.
Special Conditions for Marine Applications
Some products are Lloyd’s Register (LR) Type Approved for marine (shipboard) applications.
To verify Lloyd’s Register certification for a product, visit ni.com/certification and search for
the LR certificate, or look for the Lloyd’s Register mark on the product.
Caution In order to meet the EMC requirements for marine applications, install the
product in a shielded enclosure with shielded and/or filtered power and input/output
ports. In addition, take precautions when designing, selecting, and installing
measurement probes and cables to ensure that the desired EMC performance is
attained.
What You Need to Install CompactRIO
Reconfigurable Embedded Hardware
• CompactRIO reconfigurable embedded chassis with integrated intelligent real-time
controller
• C Series I/O modules
• DIN rail mount kit (for DIN rail mounting only)
• Two M4 or number 10 panhead screws (for panel mounting only)
• A number 2 Phillips screwdriver
• Power supply
Note Visit ni.com/info and enter the Info Code rdsoftwareversion to
determine which software you need to use the cRIO-9074XT.
NI cRIO-9074XT User Manual and Specifications | © National Instruments | 3
Mounting the CompactRIO Reconfigurable
Embedded Chassis
You can mount the chassis in any orientation on a 35 mm DIN rail or on a panel. Use the DIN
rail mounting method if you already have a DIN rail configuration or if you need to be able to
quickly remove the CompactRIO chassis. Use the panel mount method for high shock and
vibration applications.
Caution Your installation must meet the following requirements for space and
cabling clearance:
• Allow 25.4 mm (1 in.) on the top and the bottom of the chassis for air
circulation.
• Allow 50.8 mm (2 in.) in front of modules for cabling clearance for common
connectors, such as the 10-terminal, detachable screw terminal connector.
Figure 2. cRIO-9074XT Bottom View with Dimensions
29.0 mm
(1.14 in.)
58.9 mm
(2.32 in.)
3.3 mm
(0.13 in.)
Cabling Clearance
50.8 mm (2.00 in.)
48.4 mm
(1.91 in.)
286.4 mm
(11.28 in.)
4| ni.com | NI cRIO-9074XT User Manual and Specifications
Figure 3. cRIO-9074XT Front View with Dimensions
165.1 mm
(6.50 in.)
3.1 mm
(0.12 in.)
51.1 mm
(2.04 in.)
36.4 mm
(1.43 in.)
19.0 mm
(0.75 in.)
NI cRIO-907x
88.1 mm
(3.47 in.)
1
1. Chassis grounding terminal
Figure 4. cRIO-9074XT Side View with Dimensions
3X M4X0.7
25 mm
(0.98 in.)
44 mm
(1.73 in.)
23.7 mm
(0.94 in.)
63.1 mm
(2.48 in.)
44.1 mm
(1.74 in.)
The following sections contain instructions for the mounting methods. Before using any of
these mounting methods, record the serial number from the back of the chassis. You will be
unable to read the serial number after you have mounted the chassis.
Caution Make sure that no I/O modules are in the chassis before mounting it.
NI cRIO-9074XT User Manual and Specifications | © National Instruments | 5
Mounting the Chassis on a Panel
Panel or wall mounting is the best method for applications that are subject to high shock and
vibration. You can use the NI 9905 panel mount kit to mount the cRIO-9074XT on a flat
surface. Complete the following steps.
1. Fasten the chassis to the panel mount kit using a number 2 Phillips screwdriver and two
M4 × 16 screws. NI provides these screws with the panel mount kit. You must use these
screws because they are the correct depth and thread for the panel. Tighten the screws to a
maximum torque of 1.3 N · m (11.5 lb · in.).
Figure 5. Installing the Panel Mount Accessory on the cRIO-9074XT
NI cRIO-9074
Figure 6. Dimensions of cRIO-9074XT with Panel Mount Accessory Installed
31.8 mm
(1.25 in.)
NI cRIO-9074
15.5 mm
(0.61 in.)
9.5 mm
(0.38 in.) 28.1 mm
(1.11 in.)
63.5 mm
(2.50 in.)
88.1 mm
(3.47 in.)
311.2 mm
(12.25 in.)
330.2 mm
(13.00 in.)
2. Fasten the NI 9905 panel to the wall using the screwdriver and screws that are
appropriate for the wall surface. The maximum screw size is M4 or number 8.
6| ni.com | NI cRIO-9074XT User Manual and Specifications
Caution Make sure that no I/O modules are in the chassis before removing it from
the panel.
Mounting the Chassis on a DIN Rail
You can order the NI 9915 DIN rail mount kit if you want to mount the chassis on a DIN rail.
You need one clip for mounting the chassis on a standard 35 mm DIN rail. Complete the
following steps to mount the chassis on a DIN rail.
1. Fasten the DIN rail clip to the chassis using a number 2 Phillips screwdriver and two
M4 × 16 screws. NI provides these screws with the DIN rail mount kit. Tighten the
screws to a maximum torque of 1.3 N · m (11.5 lb · in.).
Figure 7. Installing the DIN Rail Clip on the cRIO-9074XT
2. Insert one edge of the DIN rail into the deeper opening of the DIN rail clip.
NI cRIO-9074XT User Manual and Specifications | © National Instruments | 7
Figure 8. One Edge of the DIN Rail Inserted in a Clip
3
2
1
1. DIN Rail Clip
2. DIN Rail
3. DIN Rail Spring
3. Press down firmly on the chassis to compress the spring until the clip locks in place on
the DIN rail.
Caution Make sure that no I/O modules are in the chassis before removing it
from the DIN rail.
Installing C Series I/O Modules in the Chassis
The following figure shows the mechanical dimensions of C Series I/O modules.
Figure 9. C Series I/O Module, Front and Side View with Dimensions
88.1 mm
(3.47 in.)
70.7 mm
(2.78 in.)
22.9 mm
(0.90 in.)
Complete the following steps to install a C Series I/O module in the chassis.
1. Make sure that no I/O-side power is connected to the I/O module. If the system is in a
nonhazardous location, the chassis power can be on when you install I/O modules.
2. Align the I/O module with an I/O module slot in the chassis. The module slots are labeled
1 to 8, left to right.
8| ni.com | NI cRIO-9074XT User Manual and Specifications
Figure 10. Installing an I/O Module in the Chassis
NI cRIO-9074
1
2
1. Insertion Groove
2. Latch
3. Squeeze the latches and insert the I/O module into the module slot.
4. Press firmly on the connector side of the I/O module until the latches lock the I/O module
into place.
5. Repeat these steps to install additional I/O modules.
Removing I/O Modules from the Chassis
Complete the following steps to remove a C Series I/O module from the chassis.
1. Make sure that no I/O-side power is connected to the I/O module. If the system is in a
nonhazardous location, the chassis power can be on when you remove I/O modules.
2. Squeeze the latches on both sides of the module and pull the module out of the chassis.
Connecting the Chassis to a Network
Connect the chassis to an Ethernet network using the RJ-45 Ethernet port on the controller
front panel. Use a standard Category 5 (CAT-5) or better shielded, twisted-pair Ethernet cable
to connect the chassis to an Ethernet hub, or use an Ethernet crossover cable to connect the
chassis directly to a computer.
NI cRIO-9074XT User Manual and Specifications | © National Instruments | 9
Caution To prevent data loss and to maintain the integrity of your Ethernet
installation, do not use a cable longer than 100 m.
The first time you power up the chassis, it attempts to initiate a DHCP network connection. If
the chassis is unable to initiate a DHCP connection, it connects to the network with a link-
local IP address with the form 169.254.x.x. After powerup, you must install software on
the chassis and configure the network settings in NI Measurement & Automation Explorer
(MAX).
Note Installing software may change the network behavior of the chassis. For
information about network behavior by installed software version, go to ni.com/info
and enter the Info Code ipconfigcrio.
Connecting the Chassis to Earth Ground
You must connect the chassis grounding screw to earth ground. Complete the following steps
to connect to earth ground.
1. Attach a ring lug to a 2.0 mm2 (14 AWG) or larger wire.
2. Remove the grounding screw from the grounding terminal on the right side of the chassis.
3. Attach the ring lug to the grounding terminal.
4. Tighten the grounding screw to 0.5 N · m (4.4 lb · in.) of torque.
5. Attach the other end of the wire to the grounding electrode system of your facility using a
method appropriate for the application.
Caution If you use shielded cabling to connect to a C Series I/O module with
a plastic connector, you must attach the cable shield to the chassis grounding
terminal using 1.3 mm2 (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, go to ni.com/info and enter the Info
Code emcground.
Wiring Power to the Chassis
The cRIO-9074XT requires an external power supply that meets the specifications in the
Power Requirements section. The cRIO-9074XT filters and regulates the supplied power and
provides power for all of the I/O modules. The cRIO-9074XT has one layer of reverse-voltage
protection. Complete the following steps to connect a power supply to the chassis.
1. Connect the positive lead of the power supply to the V terminal of the power connector
shipped with the cRIO-9074XT, and tighten the terminal screw. The following figure
shows the terminal screws, which secure the wires in the screw terminals, and the
connector screws, which secure the power connector on the front panel.
10 | ni.com | NI cRIO-9074XT User Manual and Specifications
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