National Instruments PXIe-2527 User manual

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INSTALLATION INSTRUCTIONS
NI TB-2627
Terminal Block for the NI PXI/PXIe-2527
This guide describes how to install and connect signals to the
National Instruments TB-2627 terminal block to configure your
NI PXI/PXIe-2527 switch module as one of the following:
• 64 × 1 1-wire multiplexer
• 32 × 1 2-wire multiplexer
• 16 × 1 4-wire multiplexer
• Dual 32 × 1 1-wire multiplexer
• Dual 16 × 1 2-wire multiplexer
Refer to the NI Switches Getting Started Guide to determine when to install
the NI TB-2627.
Introduction
The NI TB-2627 terminal block installs in front of the NI PXI/PXIe-2527
switch module. The NI TB-2627 has screw terminals that provide access to
all channels of the multiplexer.
Caution The NI TB-2627 is rated for 300 V, Measurement Category I. Do not use this
module with the NI PXI/PXIe-2527 for connections 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.
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NI TB-2627 Installation Instructions 2 ni.com
Conventions
The following conventions are used in this guide:
»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.
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.
When symbol is marked on a product, it denotes a warning advising you to
take precautions to avoid electrical shock.
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
To avoid 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.
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©National Instruments Corporation 3 NI TB-2627 Installation Instructions
Caution Do not install a damaged terminal block on a switch terminal block.
Store the terminal block in the antistatic package when not in use.
2. Verify the Components
Make sure you have the following:
❑NI TB-2627 terminal block
❑NI PXI/PXIe-2527 switch module
❑PXI chassis
❑1/8 in. flathead screwdriver
❑Wire cutter
❑Wire insulation stripper
3. Connect Signals
Caution Ensure that power has not been applied to signals prior to connection. Only
trained and qualified service personnel should install and connect signals.
To connect signals to the terminal block, complete the following steps:
1. Prepare the signal wire by stripping the insulation no more than
3/16 of an inch from the end of the wire.
2. Remove the terminal block top cover screws with the flathead
screwdriver.
3. Gently lift the top cover off the terminal block.
4. Loosen the two screws on the strain-relief assembly and remove the
top strain-relief bar.
5. Connect the safety earth ground to a safety ground lug.
6. Connect the wire to the terminal by inserting the stripped end of the
wire into the terminal. When connecting a signal, refer to the terminal
reference diagram in Figure 4.
7. Tighten the screw for the terminal to secure the connection.
8. Pull the wire through the strain-relief bar to remove the slack in the
wiring.
9. Replace the strain-relief bar and tighten the two screws on the
strain-relief assembly to secure the cables.
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NI TB-2627 Installation Instructions 4 ni.com
10. Replace the terminal block top cover.
11. Secure the terminal block top cover with the top cover screw.
Figure 1. NI TB-2627 Terminal Block
1 Terminal Block Top Cover
2 Top Cover Screw
3 Safety Ground Lug
4 Chassis Screws
5 Strain-Relief Screws
6 Strain-Relief Opening
7 Strain-Relief Bar
8ScrewTerminals
9 Rear Connector
10 Analog Bus*
* For connection to a DMM, use the HV6-BAN4 DMM cable described in the
Accessories section.
4
9
6
85
7
2
3
1
5
10
No
Connect
No
Connect
3
COM0+
pin 1
COM0–
COM1+
4
COM1–
2
4
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©National Instruments Corporation 5 NI TB-2627 Installation Instructions
Caution In order to comply with standards and laws governing electromagnetic
compatibility (EMC), you must install the NI 711627-01 snap-on ferrite shipped with the
NI TB-2627 terminal block. Install the ferrite as close to the NI TB-2627 terminal block as
possible. Wrap all wires exiting the terminal block around one side of the ferrite so that
they pass through the ferrite twice, as shown in Figure 2 and Figure 3.
Figure 2. Open Ferrite Near Ends of Power Wires
Figure 3. Closed Ferrite
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NI TB-2627 Installation Instructions 6 ni.com
Figure 4. NI TB-2627 Terminal Reference Diagram
WARNING: IF HIGH VOLTAGE ISPRESENT, CONNECT A SAFETY
EARTH GROUND TO THE SAFETY GROUND LUG.
NI TB-2627 Terminal Reference Guide
100 POSITION CONNECTOR
14–
14+
13–
13+
12–
12+
11–
11+
0–
0+
1WREF1
1WREF0
COM1–
COM1+
COM0–
COM0+
19–
19+
18–
18+
17–
17+
16–
16+
15–
15+
5–
5+
4–
4+
3–
3+
2–
2+
1–
1+
24–
24+
23–
23+
22–
22+
21–
21+
20–
20+
10–
10+
9–
9+
8–
8+
7–
7+
6–
6+
31–
31+
30–
30+
29–
29+
28–
28+
27–
27+
26–
26+
25–
25+
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©National Instruments Corporation 7 NI TB-2627 Installation Instructions
Table 1. 64 ×1 1-Wire Topology Terminal Mapping
Software
Name Ter m ina l
Software
Name Ter m ina l
Software
Name Ter m ina l
Software
Name Terminal
Software
Name Terminal
ch0 0+ ch14 14+ ch28 28+ ch42 10– ch56 24–
ch1 1+ ch15 15+ ch29 29+ ch43 11– ch57 25–
ch2 2+ ch16 16+ ch30 30+ ch44 12– ch58 26–
ch3 3+ ch17 17+ ch31 31+ ch45 13– ch59 27–
ch4 4+ ch18 18+ ch32 0– ch46 14– ch60 28–
ch5 5+ ch19 19+ ch33 1– ch47 15– ch61 29–
ch6 6+ ch20 20+ ch34 2– ch48 16– ch62 30–
ch7 7+ ch21 21+ ch35 3– ch49 17– ch63 31–
ch8 8+ ch22 22+ ch36 4– ch50 18– 1wref0 1WREF0
ch9 9+ ch23 23+ ch37 5– ch51 19– 1wref1 1WREF1
ch10 10+ ch24 24+ ch38 6– ch52 20– com0+ COM0+
ch11 11+ ch25 25+ ch39 7– ch53 21– com0– COM0–
ch12 12+ ch26 26+ ch40 8– ch54 22– com1+ COM1+
ch13 13+ ch27 27+ ch41 9– ch55 23– com1– COM1–
Table 2. 32 ×1 2-Wire Topology Terminal Mapping
Software
Name
Terminal Software
Name
Terminal Software
Name
Term i nal
+ – + – + –
ch0 0+ 0– ch12 12+ 12– ch24 24+ 24–
ch1 1+ 1– ch13 13+ 13– ch25 25+ 25–
ch2 2+ 2– ch14 14+ 14– ch26 26+ 26–
ch3 3+ 3– ch15 15+ 15– ch27 27+ 27–
ch4 4+ 4– ch16 16+ 16– ch28 28+ 28–
ch5 5+ 5– ch17 17+ 17– ch29 29+ 29–
ch6 6+ 6– ch18 18+ 18– ch30 30+ 30–
ch7 7+ 7– ch19 19+ 19– ch31 31+ 31–
ch8 8+ 8– ch20 20+ 20– com0 COM0+ COM0–
ch9 9+ 9– ch21 21+ 21– com1 COM1+ COM1–
ch10 10+ 10– ch22 22+ 22–
ch11 11+ 11– ch23 23+ 23–
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NI TB-2627 Installation Instructions 8 ni.com
Table 3. 16 ×1 4-Wire Topology Terminal Mapping
Software
Name
Terminal Software
Name
Terminal
A+ A– B+ B– A+ A– B+ B–
ch0 0+ 0– 16+ 16– ch9 9+ 9– 25+ 25–
ch1 1+ 1– 17+ 17– ch10 10+ 10– 26+ 26–
ch2 2+ 2– 18+ 18– ch11 11+ 11– 27+ 27–
ch3 3+ 3– 19+ 19– ch12 12+ 12– 28+ 28–
ch4 4+ 4– 20+ 20– ch13 13+ 13– 29+ 29–
ch5 5+ 5– 21+ 21– ch14 14+ 14– 30+ 30–
ch6 6+ 6– 22+ 22– ch15 15+ 15– 31+ 31–
ch7 7+ 7– 23+ 23– com0 COM0+ COM0– COM1+ COM1–
ch8 8+ 8– 24+ 24–
Table 4. Dual 32 ×1 1-Wire Topology Terminal Mapping
Software
Name Ter m ina l
Software
Name Ter m ina l
Software
Name Ter m ina l
Software
Name Terminal
Software
Name Terminal
ch0 0+ ch14 14+ ch28 12– ch42 26+ ch56 24–
ch1 1+ ch15 15+ ch29 13– ch43 27+ ch57 25–
ch2 2+ ch16 0– ch30 14– ch44 28+ ch58 26–
ch3 3+ ch17 1– ch31 15– ch45 29+ ch59 27–
ch4 4+ ch18 2– ch32 16+ ch46 30+ ch60 28–
ch5 5+ ch19 3– ch33 17+ ch47 31+ ch61 29–
ch6 6+ ch20 4– ch34 18+ ch48 16– ch62 30–
ch7 7+ ch21 5– ch35 19+ ch49 17– ch63 31–
ch8 8+ ch22 6– ch36 20+ ch50 18– 1wref0 1WREF0
ch9 9+ ch23 7– ch37 21+ ch51 19– 1wref1 1WREF1
ch10 10+ ch24 8– ch38 22+ ch52 20– com0+ COM0+
ch11 11+ ch25 9– ch39 23+ ch53 21– com0– COM0–
ch12 12+ ch26 10– ch40 24+ ch54 22– com1+ COM1+
ch13 13+ ch27 11– ch41 25+ ch55 23– com1– COM1–
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©National Instruments Corporation 9 NI TB-2627 Installation Instructions
Table 5. Dual 16 ×1 2-Wire Topology Terminal Mapping
Software
Name
Terminal Software
Name
Terminal Software
Name
Term i nal
+ – + – + –
ch0 0+ 0– ch12 12+ 12– ch24 24+ 24–
ch1 1+ 1– ch13 13+ 13– ch25 25+ 25–
ch2 2+ 2– ch14 14+ 14– ch26 26+ 26–
ch3 3+ 3– ch15 15+ 15– ch27 27+ 27–
ch4 4+ 4– ch16 16+ 16– ch28 28+ 28–
ch5 5+ 5– ch17 17+ 17– ch29 29+ 29–
ch6 6+ 6– ch18 18+ 18– ch30 30+ 30–
ch7 7+ 7– ch19 19+ 19– ch31 31+ 31–
ch8 8+ 8– ch20 20+ 20– com0 COM0+ COM0–
ch9 9+ 9– ch21 21+ 21– com1 COM1+ COM1–
ch10 10+ 10– ch22 22+ 22–
ch11 11+ 11– ch23 23+ 23–
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