National Instruments 9146 User manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9146
Ethernet Expansion Chassis for C Series Modules
Figure 1. NI 9146 Front Panel
This document describes how to connect the NI 9146 to a network and
how to use the features of the NI 9146. This document also contains
specifications for the NI 9146.
1LEDs
2 RJ-45 Ethernet Port
3 Power Connector
4 Reset Button
C
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POWER POWER
STATUS
USER FPGA1
NI 9146
INPUT
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15 W MAX
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1
2
3
RESET
4

NI 9146 Operating Instructions and Specifications 2 ni.com
Safety Guidelines
Operate the NI 9146 only as described in these operating instructions.
Safety Guidelines for Hazardous Locations
The NI 9146 is suitable for use in Class I, Division 2, Groups A, B, C, D,
T4 hazardous locations; Class 1, Zone 2, AEx nC IIC T4 and Ex nL IIC T4
hazardous locations; and nonhazardous locations only. Follow these
guidelines if you are installing the NI 9146 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 Substitution of components may impair suitability for Class I, Division 2.
Caution For Zone 2 applications, install the CompactRIO system in an enclosure rated to
at least IP 54 as defined by IEC 60529 and EN 60529.
Special Conditions for Hazardous Locations Use
in Europe
Some chassis have been evaluated as Ex nA nL IIC T4 equipment under
DEMKO Certificate No. 07 ATEX 0626664X. Each such chassis is marked
II 3G and is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of –40 ≤Ta ≤ 70 °C.
Special Conditions for Marine Applications
Some chassis are Lloyd’s Register (LR) Type Approved for marine
applications. To verify Lloyd’s Register certification, visit ni.com/
certification and search for the LR certificate, or look for the
Lloyd’s Register mark on the chassis.
What You Need to Install the NI 9146 Ethernet
Expansion Chassis
❑NI 9146 Ethernet expansion chassis
❑NI-RIO Software DVD
❑C Series I/O modules

©National Instruments 3 NI 9146 Operating Instructions and Specifications
❑DIN rail mount kit (for DIN rail mounting only)
❑Panel mount kit (for panel mounting only)
❑Two M4 or number 8 flathead screws (for mounting the chassis
without one of the listed mounting kits)
❑A number 2 Phillips screwdriver
❑Power supply
❑Ethernet cable
Notes Visit ni.com/info and enter the Info Code rdsoftwareversion to determine
which software you need to use the NI 9146.
Mounting the Chassis
You can mount the chassis horizontally on a flat, vertical, metallic surface
such as a panel or wall. The maximum allowable ambient temperature
for operation in this configuration is 70 °C. Figure 2 shows the chassis
mounted horizontally.
Figure 2. NI 9146 Mounted Horizontally
You can also mount the chassis on a panel or wall in other orientations, on
a non-metallic surface, on a 35 mm DIN rail, on a rack, in an enclosure, or
on a desktop. Mounting the chassis in these or other configurations can
reduce the maximum allowable ambient temperature and can affect the
typical accuracy of modules in the chassis.
Note For information about how different mounting configurations can cause temperature
derating, go to ni.com/info and enter the Info Code criomounting.
Note For information about typical accuracy specifications for modules, go to ni.com/
info and enter the Info Code criotypical.
C
V
RESET
POWER POWER
POWER
STATUS
STATUS
USER FPGA1
USER FPGA1
NI 9146
INPUT
9-30 V
15 W MAX
M
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10/100
Up

NI 9146 Operating Instructions and Specifications 4 ni.com
Note Measure the ambient temperature at each side of the chassis, 63.5 mm (2.5 in.) from
the side and 25.4 mm (1 in.) forward from the rear of the chassis, as shown in Figure 3.
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, as shown
in Figure 3.
Figure 3. NI 9146, Bottom View with Dimensions
Note Go to ni.com/info and enter the Info Code rdcrioconn to find the minimum
cabling clearance for C Series modules with other connector types.
Figure 4. NI 9146, Front View with Dimensions
1 Measure ambient temperature here. 2 Chassis Grounding Screw
4 mm
(0.16 in.)
178.1 mm
(7.01 in.)
29.1 mm
(1.14 in.)
64.3mm
(2.53in.)
48.4 mm
(1.91 in.)
Cabling Clearance
50.8 mm (2.00 in.)
2
25.4 mm
(1 in.)
63.5 mm
(2.50 in.)
1
63.5 mm
(2.50 in.)
1
25.4 mm
(1 in.)
C
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POWER POWERPOWER
STATUS
STATUS
USER FPGA1USER FPGA1
NI 9146
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15 W MAX
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87.3mm
(3.44 in.)
41.1 mm
(1.62 in.)
47.0 mm
(1.85 in.)
47.2 mm
(1.86 in.)
30.6 mm
(1.2 in.)
Cooling Outline 25.4 mm (1 in.)
Cooling Outline 25.4 mm (1 in.)

©National Instruments 5 NI 9146 Operating Instructions and Specifications
Figure 5. NI 9146, Side View with Dimensions
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.
Mounting the Chassis on a Flat Surface
Using the NI 9904 Panel Mount Kit
Panel or wall mounting is the best method for applications that are subject
to high shock and vibration. You can use the NI 9904 panel mount kit to
mount the NI 9146 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 ×25 screws. National Instruments 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.).
]
2X M4X0.7
44.0 mm
(1.73in.)
74.0 mm
(2.91 in.)
29.1 mm
(1.15 in.)
44.1 mm
(1.54 in.)

NI 9146 Operating Instructions and Specifications 6 ni.com
Figure 6. Installing the Panel Mount Accessory on the NI 9146
Figure 7. Dimensions of NI 9146 with Panel Mount Accessory Installed
2. Fasten the NI 9904 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.
Caution Make sure that no I/O modules are in the chassis before removing it from the
panel.
C
V
RESET
POWER POWER
POWER
STATUS
STATUS
USER FPGA1
USER FPGA1
NI 9146
INPUT
9-30 V
15 W MAX
M
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10/100
29.5 mm
(1.16 in.)
9.5 mm
(0.38 in.)
27.3mm
(1.08 in.)
215.9 mm
(8.5 in.)
235.0 mm
(9.25 in.)
31.7 mm
(1.25 in.) 63.5 mm
(2.50 in.)
88.1 mm
(3.47 in.)
7.2 mm
(0.29 in.)

©National Instruments 7 NI 9146 Operating Instructions and Specifications
Mounting the Chassis Directly on a Flat Surface
Using the Mounting Holes
Panel or wall mounting is the best method for applications that are subject
to high shock and vibration. If you do not have the NI 9904 panel mount kit
and do not require the portability that the NI 9904 affords, you can mount
the chassis directly on a flat surface using the mounting holes. Complete
the following steps.
1. Align the chassis on the surface.
2. Fasten the chassis to the surface using M4 or number 8 flathead screws,
as shown in Figure 8. National Instruments does not provide these
screws with the chassis.
Figure 8. Mounting the Chassis Directly on a Flat Surface
Caution Make sure that no I/O modules are in the chassis before removing it from the
surface.
Mounting the Chassis on a DIN Rail
You can order the NI 9912 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 ×25 screws. National Instruments 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.).
C
V
RESET
POWER POWER
POWER
STATUS
STATUS
USER FPGA1
USER FPGA1
NI 9146
INPUT
9-30 V
15 W MAX
M
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NI
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RT UT
LA
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ACT/
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10/100

NI 9146 Operating Instructions and Specifications 8 ni.com
Figure 9. Installing the DIN Rail Clip on the NI 9146
2. Insert one edge of the DIN rail into the deeper opening of the DIN rail
clip, as shown in Figure 10.
Figure 10. One Edge of the DIN Rail Inserted in a Clip
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.
1 DIN Rail Clip 2 DIN Rail 3 DIN Rail Spring
3
2
1

©National Instruments 9 NI 9146 Operating Instructions and Specifications
Mounting the Chassis on a Desktop
Using the NI 9901 Desktop Mounting Kit
You can use the NI 9901 desktop mounting kit to mount the chassis on a
desktop. You must install the adapter bracket using two M3 ×20 screws.
The adapter bracket and the screws are included in the kit. Refer to the
NI 9901 documentation for information about mounting the chassis on a
desktop.
Installing C Series I/O Modules in the Chassis
Figure 11 shows the mechanical dimensions of C Series I/O modules.
Figure 11. C Series I/O Module, Front and Side View with Dimensions
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 as shown
in Figure 12. The module slots are labeled 1 to 4, left to right.
88.1 mm
(3.47 in.)
70.7 mm
(2.78 in.)
22.9 mm
(0.9 in.)

NI 9146 Operating Instructions and Specifications 10 ni.com
Figure 12. Installing an I/O Module in the Chassis
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.
1 Insertion Groove 2 Latch
1
2