National Instruments NI TB-2634 User manual

INSTALLATION INSTRUCTIONS
NI TB-2634
4×32 2-Wire Terminal Block for the NI PXI-2529
This document describes how to install and connect signals to the
National Instruments TB-2634 terminal block. Refer to the NI Switches
Getting Started Guide to determine when to install the NI TB-2634.
Introduction
The NI TB-2634 terminal block installs in front of the NI PXI-2529 switch
module and has ribbon cable headers that provide access to the rows and
columns of the matrix. Connections for the trigger input and trigger output
signals also are available.
Caution This terminal block is rated for Measurement Category I and intended to carry
signal voltages no greater than 150 V. This module can withstand up to 800 V impulse
voltage. Do not use this module for connection to signals or for measurements within
Categories II, III, or IV. Do not connect to MAINS supply circuits (for example, wall
outlets) of 115 or 230 VAC. Refer to the Read Me First: Safety and Electromagnetic
Compatibility document for more information on measurement categories.
When module terminals are hazardous voltage LIVE (> 42.4 Vpk/60 VDC), you must
ensure that devices and circuits connected to the module are properly insulated from
human contact.
Conventions
The following conventions are used in this document:
»The »symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
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NI TB-2634 Installation Instructions 2 ni.com
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash.
bold Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names.
italic Italic text denotes variables, emphasis, a cross-reference, or an introduction
to a key concept. Italic text also denotes text that is a placeholder for a word
or value that you must supply.
monospace Text in this font denotes text or characters that you should enter from the
keyboard, sections of code, programming examples, and syntax examples.
This font is also used for the proper names of disk drives, paths, directories,
programs, subprograms, subroutines, device names, functions, operations,
variables, filenames, and extensions.
1. Unpack the Terminal Block
The terminal block is shipped in an antistatic package to prevent
electrostatic discharge (ESD) that can damage several components on the
terminal block. To avoid such damage when you handle the terminal block,
take the following precautions:
Caution Never touch the exposed pins of connectors.
• Ground yourself using a grounding strap or by touching a grounded
object.
• Touch the antistatic package to a metal part of the chassis before you
remove the terminal block from the package.
Remove the terminal block from the package and inspect the terminal block
for loose components or any sign of damage. Notify NI if the terminal
block appears damaged in any way. Do not install a damaged terminal
block on a switch module.
Store the terminal block in the antistatic package when not in use.

©National Instruments Corporation 3 NI TB-2634 Installation Instructions
2. Verify the Components
Make sure you have the following:
❑NI TB-2634 terminal block
❑PXI chassis
❑NI PXI-2529 switch module
❑1/8 in. flathead screwdriver
❑Ribbon cables terminated with 2 ×16, 0.1 in. pitch sockets
Note Refer to the Accessories section for a list of vendors that supply compatible sockets
and ribbon cabling for signal connections.
3. Connect Signals
To connect signals to the terminal block, complete the following steps
while referring to Figure 1.
1. Remove the terminal block top cover screw with a flathead
screwdriver.
2. Gently lift the terminal block top cover off the terminal block.
3. Loosen the two screws on the strain-relief bar, leaving plenty of space
for the signal cables.
4. Pull the ribbon cables through the strain-relief opening as shown in
Figure 1.
5. Connect the safety earth ground to the safety ground lug.
6. Connect each ribbon cable socket to a ribbon cable header. When
connecting your signals to the headers, refer to the connection diagram
in Figure 2.
7. Remove slack in the ribbon cables by pulling them through the
strain-relief bar.
8. Tighten the two screws on the strain-relief bar until the signal wires are
secured.
9. Replace the terminal block top cover.
10. Secure the terminal block top cover with the top cover screw.

NI TB-2634 Installation Instructions 4 ni.com
Figure 1. NI TB-2634 Terminal Block
1 Strain-Relief Bar
2 Ribbon Cable (not included)
3 Strain-Relief Opening
4 Strain-Relief Screw
5 Jackscrew
6 Safety Ground Lug
7 Terminal Block Top Cover
8 Top Cover Screw
9 Rear Connector
10 Ribbon Cable Header
1 2
5
34
7
6
10
9
8

©National Instruments Corporation 5 NI TB-2634 Installation Instructions
Figure 2. NI TB-2634 Terminal Reference
NI TB-2634 Terminal Reference Guide
TRIGOUT
GND
GND
TRIGIN
+ –
COLUMNS
16
31
17
18
19
20
21
22
23
24
25
26
27
28
29
30
0
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
+ –
ROWS
0
1
2
3
0
1
2
3
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
NO CONNECT
+ –
USE SHIELDED CABLE
ON TRIGGERS
100 POSITION CONNECTOR

NI TB-2634 Installation Instructions 6 ni.com
4. Install the Terminal Block
To connect the NI TB-2634 terminal block to the NI PXI-2529 front panel,
complete the following steps while referring to Figure 3.
1. Connect the NI PXI-2529 front connector to its mating connector on
the terminal block.
2. Tighten the top and bottom jackscrews on the terminal block to hold it
securely in place. Do not overtighten the screws.
Figure 3. Installing the NI TB-2634 Terminal Block
1 Jackscrew 2 Front Connector 3 NI PXI-2529 4 NI TB-2634
3
4
2
1

©National Instruments Corporation 7 NI TB-2634 Installation Instructions
Accessories
Refer to Table 1 for vendors of compatible sockets.
Note The ribbon cable accessories listed in Table 1 limit the maximum current you can
route to 1.5 A.
Compliance and Certifications
Safety
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to the product label or visit ni.com/
certification, search by model number or product line, and click the appropriate link
in the Certification column.
Electromagnetic Compatibility
This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement, control,
and laboratory use:
• EN 61326 EMC requirements; Minimum Immunity
• EN 55011 Emissions; Group 1, Class A
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note For EMC compliance, operate this device with shielded cables.
Table 1. Third-Party Accessories for the NI TB-2634
Accessory Manufacturer
Manufacturer
Part Number
0.1 in. 2 ×16 low-profile ribbon cable socket Samtec HCSD-16-01
0.1 in. 2 ×16 ribbon cable assembly Samtec IDSD-16 series

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CE Compliance
This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:
• 2006/95/EC; Low-Voltage Directive (safety)
• 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Note Refer to the Declaration of Conformity (DoC) for this product for any additional
regulatory compliance information. To obtain the DoC for this product, visit ni.com/
certification, search by model number or product line, and click the appropriate link
in the Certification column.
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