National Instruments NI 9155 User manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9155
Reconfigurable Embedded Chassis with Integrated MXI-Express (x1)
Figure 1. NI 9155 Front Panel
This document describes how to connect the NI 9155 to a MXI-Express
host and one or more other chassis, and how to use the features of the
NI 9155. This document also contains specifications for the NI 9155. This
document refers inclusively to all reconfigurable embedded chassis with
integrated MXI-Express (x1), such as the NI 9154, NI 9155, NI 9157, and
NI 9159, as the NI 915x.
1LEDs
2 Upstream Port
3 MXI-Express LINK LEDs
4 Downstream Port
5 Power Connector
6 DIP Switches
C
C
V2
V1
INPUINPUT
9-30 V9-30 V
25W MA25W MAX
NO FPGA APNO FPGA APP
USER FPGAUSER FPGA1
USER FPGAUSER FPGA2
USER FPGAUSER FPGA3
P
USER FPGAUSER FPGA1
USER FPGAUSER FPGA2
USER FPGAUSER FPGA3
POWEROWER
USER FPGAUSER FPGA1
USER FPGAUSER FPGA2
USER FPGAUSER FPGA3
LINKLINK LINKLINK
UPSTREAMSTREAM
DOWNSTREAMDOWNSTREAM
MXI-Express RIOMXI-Express RIO
NI 9155
OFFOFF
3
2
4
5
6
1

NI 9155 Operating Instructions and Specifications 2 ni.com
Safety Guidelines
Operate the NI 9155 only as described in these operating instructions.
Safety Guidelines for Hazardous Locations
The NI 9155 is suitable for use in Class I, Division 2, Groups A, B, C, D,
T4 hazardous locations; Class 1, 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 NI 9155 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 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 IIC T4 Gc equipment under
DEMKO Certificate No. 12 ATEX 1202658X. Each such chassis is marked
II 3G and is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of 0 ≤Ta ≤55 °C.
Caution Provision shall be made to prevent the rated voltage being exceeded by the
transient disturbances of more than 140% of the peak rated voltage.
Caution The system shall be mounted in an ATEX certified enclosure with a minimum
ingress protection rating of at least IP54 as defined in IEC/EN 60529 and used in an
environment of not more than pollution degree 2.
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

©National Instruments 3 NI 9155 Operating Instructions and Specifications
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 modifications to the product not expressly approved by
National Instruments could void your authority to operate it under your
local regulatory rules.
Caution To ensure the specified EMC performance, operate this product only with
shielded cables and accessories.
Special Guidelines 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 label.
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 the NI 9155
❑NI 9155 reconfigurable embedded chassis with integrated
MXI-Express (x1)
❑One of the following MXI-Express (x1) host systems
– PXI system with MXI-Express device installed
– PC with MXI-Express PCI or PCIe device installed
– NI Industrial Controller
– NI cRIO-9081/9082 integrated system
Note The NI 9155 requires a host system with a PCI Express clock that complies with the
PCI Express Specification. The NI 9155 may not be compatible with systems using
noncompliant clocks, particularly clocks with peak frequencies higher than 100 MHz. For

NI 9155 Operating Instructions and Specifications 4 ni.com
more information about PCI Express clock compatibility with the NI 9155, go to ni.com/
info and enter the Info Code 915xclock.
❑C Series I/O modules
❑MXI-Express (x1) cable(s) up to 7 m long
❑DIN rail mount kit (for DIN rail mounting only)
❑Two M4 or number 8 panhead screws (for mounting the chassis
without one of the listed mounting kits)
❑Number 2 Phillips screwdriver
❑Power supply
❑MXI-Express (x1) for PXI Express User Manual
Notes Visit ni.com/info and enter the Info Code rdsoftwareversion to determine
which software you need to use the NI 9155.
Mounting the NI 9155
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 kind of mounting configuration is 55 °C. You can also
mount the chassis on a DIN rail, on a desktop, or in a rack. However, only
panel or wall mounting as described in this document enables operation at
the maximum allowable ambient temperature. Any other mounting
configuration can also affect the typical accuracy of modules in the chassis.
Figure 2 shows the chassis mounted horizontally.
Figure 2. NI 9155 Mounted Horizontally
Note For more information about how different mounting configurations can cause
temperature derating, go to ni.com/info and enter the Info Code criomounting.
Up
NI 9155NI 9155

©National Instruments 5 NI 9155 Operating Instructions and Specifications
Note For more information about typical accuracy specifications for modules, go to
ni.com/info and enter the Info Code criotypical.
Note Measure the ambient temperature at each side of the chassis, 63.5 mm (2.5 in.) from
the side and 50.8 mm (2 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 50.8 mm (2 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.
Note For information about the minimum cabling clearance for C Series modules with
other connector types, go to ni.com/info and enter the Info Code rdcrioconn.
Figure 3. NI 9155, Bottom View with Dimensions
Figure 4. NI 9155, Front View with Dimensions
1 Measure ambient temperature here.
1 Chassis Grounding Screw
29.1 mm
(1.14 in.)
52.5 mm
(2.07 in.)
50.8 mm
(2.00 in.)
1
63.5 mm
(2.50 in.)
89.4 mm
(3.52 in.)
264.3mm
(10.41 in.)
50.8 mm
(2.00 in.)
63.5 mm
(2.50 in.)
1
46.0 mm
(1.81 in.)
Cooling Outline
50.8 mm (2.00 in.)
88.1 mm
(3.47 in.)
Cooling Outline
50.8 mm (2.00 in.)
51.7 mm
(2.04 in.)
36.4 mm
(1.43in.)
19.0 mm
(0.75 in.)
165.1 mm
(6.50 in.)
3.5 mm
(0.14 in.)
1
NI 9155

NI 9155 Operating Instructions and Specifications 6 ni.com
Figure 5. NI 9155, Side View with Dimensions
Note For more information about the dimensions of the system, including detailed
dimensional drawings, go to ni.com/dimensions.
Note For more information about mounting the chassis in environments with high shock
and vibration, go to ni.com/info and enter the Info Code criomounting.
Caution Make sure that no I/O modules are in the chassis before mounting it.
Mounting the Chassis Directly on a Flat Surface
Using the Mounting Holes
For environments with high shock and vibration, National Instruments
requires mounting the chassis directly on a flat, rigid surface using the
mounting holes in the chassis. Complete the following steps to mount the
chassis:
1. Use the dimensions shown in Figure 4 to prepare the surface for
mounting the chassis.
2. Align the chassis on the surface.
3. Fasten the chassis to the surface using two M4 or number 8 screws, as
shown in Figure 6. National Instruments does not provide these screws
with the chassis.
44.1 mm
(1.73in.)
25.0 mm
(0.98 in.)
63.1 mm
(2.48 in.)
74.6 mm
(2.94 in.)
50.8 mm
(2.00 in.)

©National Instruments 7 NI 9155 Operating Instructions and Specifications
Figure 6. Mounting the NI 9155 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 Using the NI 9915 DIN Rail Mount Kit
Complete the following steps to mount the chassis on a DIN rail using the
NI 9915 DIN rail mount kit.
1. Fasten the DIN rail clip to the chassis using a number 2 Phillips
screwdriver and two M4 ×50 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.).
Figure 7. Installing the DIN Rail Clip on the NI 9155
NI 9155

NI 9155 Operating Instructions and Specifications 8 ni.com
2. Insert one edge of the DIN rail into the deeper opening of the DIN rail
clip, as shown in Figure 8.
Figure 8. Attaching the DIN Rail Clip to the DIN Rail
3. Press down firmly on the chassis to compress the spring until the clip
locks in place on the DIN rail.
Installing C Series I/O Modules in the Chassis
Figure 9 shows the mechanical dimensions of C Series I/O modules.
Figure 9. C Series I/O Module, Front and Side View with Dimensions
1 DIN Rail Clip 2 DIN Rail 3 DIN Rail Spring
3
2
1
22.9 mm
(0.90 in.)
88.1 mm
(3.47 in.)
70.7 mm
(2.78 in.)

©National Instruments 9 NI 9155 Operating Instructions and Specifications
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 10. The module slots are labeled 1 to 8, left to right.
Figure 10. 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.
1 Insertion Groove 2Latch
1
2

NI 9155 Operating Instructions and Specifications 10 ni.com
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 Earth Ground
You must connect the chassis grounding screw to earth ground. Refer to
Figure 4 for the location of the grounding screw. Complete the following
steps to connect to earth ground:
1. Attach a ring lug to a 2.05 mm diameter (12 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 earth ground using a method
appropriate for the application.
Note 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 mm
diameter (16 AWG) or larger wire. Use shorter wire for better EMC performance.
For more information about earth ground connections, go to ni.com/info
and enter the Info Code earthground.
Wiring Power to the Chassis
The NI 9155 requires an external power supply that meets the
specifications in the Power Requirements section. The NI 9155 filters and
regulates the supplied power and provides power for all of the I/O modules.
You must connect a power supply to at least one pair of V and C terminals.
Optionally, you can connect a second power supply to the other pair of
V and C terminals. The chassis draws power from the power supply with
the higher voltage. The NI 9155 has one layer of reversed-voltage
protection. Complete the following steps to connect a power supply to
the chassis.