National Instruments NI 9148 User manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9148
Ethernet Expansion Chassis for C Series Modules
Figure 1. NI 9148 Front Panel
This document describes how to connect the NI 9148 to a network and
how to use the features of the NI 9148. This document also contains
specifications for the NI 9148.
1LEDs
2 RJ-45 Ethernet Port
3 Power Connector
4 DIP Switches
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
INPUT
19-30 V
20 W MAX
LINK
10/
100
V
C
NC
C
2
3
4
1

NI 9148 Operating Instructions and Specifications 2 ni.com
Safety Guidelines
Operate the NI 9148 only as described in these operating instructions.
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 9148 Ethernet
Expansion Chassis
❑NI 9148 Ethernet expansion chassis
❑NI-RIO Software DVD
❑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
Notes Visit ni.com/info and enter the Info Code rdsoftwareversion to determine
which software you need to use the NI 9148.
The NI 9148 may be shipped with a clear protective film cover on the front panel. You can
remove the film cover before installing the NI 9148.
Mounting the 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 chassis.
Use the panel mount method for high shock and vibration applications.

©National Instruments Corporation 3 NI 9148 Operating Instructions and Specifications
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 2.
Figure 2. NI 9148, Bottom View with Dimensions
Figure 3. NI 9148, Front View with Dimensions
29 mm
(1.14 in.)
58.9 mm
(2.32 in.)
48.4 mm
(1.91 in.)
3.3mm
(0.13in.)
286.4 mm
(11.28 in.)
Cabling Clearance
50.8 mm (2.00 in.)
87.3mm
(3.44 in.)
165.1 mm
(6.50 in.)
3.1 mm
(0.12 in.)
51.1 mm
(2.04 in.)
36.4 mm
(1.43in.)
19 mm
(0.75 in.)
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
INPUT
19-30 V
20 W MAX
LINK
10/
100
V
C
NC
C

NI 9148 Operating Instructions and Specifications 4 ni.com
Figure 4. NI 9148, 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 Panel
You can use the NI 9905 panel mount kit to mount the NI 9148 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. 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.
3XM4X0.7
25 mm
(0.98 in.)
44 mm
(1.73in.)
23.7 mm
(0.94 in.)
63.1 mm
(2.48 in.)
44.1 mm
(1.74 in.)

©National Instruments Corporation 5 NI 9148 Operating Instructions and Specifications
Figure 5. Installing the Panel Mount Accessory on the NI 9148
Figure 6. Dimensions of NI 9148 with Panel Mount Accessory Installed
2. Fasten the NI 9905 panel to the wall using the screwdriver and screws
that are appropriate for the wall surface.
Caution Make sure that no I/O modules are in the chassis before removing it from the
panel.
31.8 mm
(1.25 in.)
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.)
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
INPUT
19-30 V
20 W MAX
LINK
10/
100
V
C
NC
C

NI 9148 Operating Instructions and Specifications 6 ni.com
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. National Instruments provides
these screws with the DIN rail mount kit.
Figure 7. Installing the DIN Rail Clip on the NI 9148

©National Instruments Corporation 7 NI 9148 Operating Instructions and Specifications
2. Insert one edge of the DIN rail into the deeper opening of the DIN rail
clip, as shown in Figure 8.
Figure 8. 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.
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 Spring 3 DIN Rail
2
1
3
88.1 mm
(3.47 in.)
70.7 mm
(2.78 in.)
22.9 mm
(0.9 in.)

NI 9148 Operating Instructions and Specifications 8 ni.com
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

©National Instruments Corporation 9 NI 9148 Operating Instructions and Specifications
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 Ethernet port 1 on the
front panel. Use a standard Category 5 (CAT-5) or better Ethernet cable to
connect the chassis to an Ethernet hub or a computer.
Caution To prevent data loss and to maintain the integrity of your Ethernet installation,
do not use a cable longer than 100 m. If you are using 100 Mbps Ethernet, National
Instruments recommends using a CAT-5 or better shielded twisted-pair Ethernet cable.
If you need to build your own cable, refer to the Cabling section for more
information about Ethernet cable wiring connections.
Note You will configure the IP settings as described in the Configuring IP Settings
section, after connecting power and powering the chassis on.
The host computer communicates with the chassis over a standard Ethernet
connection. If the host computer is on a network, you must configure
the chassis on the same subnet as the host computer. If neither the host
computer nor the chassis is connected to a network, you can connect the
two directly using a crossover cable.
If you want to use the chassis on a subnet other than the one the host
computer is on, first connect the chassis on the same subnet as the host
computer. Use DHCP to assign an IP address or reassign a static IP address
for the subnet where you want it to be and physically move it to the other
subnet.
Wiring Power to the Chassis
The NI 9148 requires an external power supply that meets the
specifications in the Power Requirements section. The NI 9148 filters and
regulates the supplied power and provides power for all of the I/O modules.

NI 9148 Operating Instructions and Specifications 10 ni.com
The NI 9148 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
COMBICON connector shipped with the NI 9148, and tighten the
terminal screw. Figure 11 shows the terminal screws, which secure the
wires in the screw terminals, and the connector screws, which secure
the power connector on the controller.
Figure 11. COMBICON Power Connector
2. Connect the negative lead of the power supply to one of the C terminals
of the COMBICON connector.
3. Install the COMBICON connector on the front panel of the NI 9148.
Caution The C terminals are internally connected to each other.
Powering On the NI 9148
When you apply power to the NI 9148, the chassis runs a power-on self test
(POST). During the POST, the Power and Status LEDs turn on. The Status
LED turns off, indicating that the POST is complete. If the LEDs do not
behave in this way when the system powers on, refer to the Understanding
LED Indications section.
Chassis Startup Options
Table 1 lists the startup options available for the NI 9148. These options
determine how the chassis behaves when it starts up in various conditions.
Use the RIO Device Setup utility to select startup options. Access the
RIO Device Setup utility by selecting Start»All Programs»National
Instruments»NI-RIO»RIO Device Setup.
1Terminal Screws 2 Connector Screws
C
NC
C
V
2
1
2