NI SCXI-1334 Bedienungsanleitung

INSTALLATION GUIDE

NI SCXI-1334

Terminal Block for the NI SCXI-1129

This guide describes how to install and connect signals to the National Instruments SCXI-1334

terminal block to configure the SCXI-1129 switch module as a 4 × 64 matrix.

Screw terminals on the SCXI-1334 allow you to access the 4 × 64 matrix. The SCXI-1334 also

contains terminals for scanner advanced output and external input trigger signals, two 128-pin

DIN connectors for connecting columns between modules, and 10-pin headers for connecting

rows between modules using expansion cables.

Refer to the NI Switches Getting Started Guide to determine when to install the terminal block.

Contents

Unpacking the Kit..................................................................................................................... 1

Verifying the Components........................................................................................................ 2

Connecting Signals................................................................................................................... 2

Expanding the Number of Columns..........................................................................................4

Installing the Terminal Block....................................................................................................6

Expanding the Number of Rows...............................................................................................7

Unpacking the Kit

Caution To prevent electrostatic discharge (ESD) from damaging the device,

ground yourself using a grounding strap or by holding a grounded object, such as

your computer chassis.

1. Touch the antistatic package to a metal part of the computer chassis.

2. Remove the device from the package and inspect the device for loose components or any

other sign of damage.

Caution Never touch the exposed pins of connectors.

Note Do not install a device if it appears damaged in any way.

3. Unpack any other items and documentation from the kit.

Store the device in the antistatic package when the device is not in use.

Verifying the Components

Make sure that you have the following components.

• SCXI-1334 terminal block

• SCXI chassis

• SCXI-1129 switch module

• 1/8 in. flathead screwdriver

• Numbers 1 and 2 Phillips screwdrivers

• Long-nose pliers

• Wire cutter

• Wire insulation stripper

• Matrix expansion plug (to expand the number of rows of a matrix)

• Matrix expansion cable (to expand the number of columns of a matrix)

Connecting Signals

Caution This module 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 NI Switches

Getting Started Guide for more information on measurement categories.

When hazardous voltages (>42.4 Vpk/60 VDC) are present on any relay terminal, safety low-

voltage (≤42.4 Vpk/60 VDC) cannot be connected to any other relay terminal

1. Prepare the signal wire by stripping the insulation no more than 7 mm from the end of the

wire.

2. Remove the top cover screw.

3. Unsnap and remove the top cover.

4. Loosen the two strain-relief screws on the strain-relief bar.

5. Run the signal wires through the strain-relief opening.

6. Insert the stripped end of the wire fully into the terminal. Secure the wire by tightening

the screw of the terminal. No bare wire should extend past the screw terminal. Exposed

wire increases the risk of a short-circuit causing a failure.

7. Connect the safety earth ground to the safety ground lug.

8. Tighten the two screws on the strain-relief assembly to secure the cables.

9. Reinstall the top cover.

10. Replace the top cover screw.

2| ni.com | NI SCXI-1334 Installation Guide

Figure 1. SCXI-1334 Top Cover Diagram

NI SCXI-1334 Installation Guide | © National Instruments | 3

Figure 2. SCXI-1334 Parts Locator Diagram

1. Column connectors

2. Screw terminals

3. Rear connector

4. Thumbscrew

5. Strain-Relief Screw

6. Row Connectors

7. Strain-Relief Bar

8. Safety Ground Lug

Expanding the Number of Columns

The SCXI-1334 offers convenient methods for expanding the number of columns of a matrix

using two or more SCXI-1334 terminal blocks.

Caution When using matrix expansion cables, only connect terminal blocks of the

same type together. Connecting different types of terminal blocks can damage the

module or the equipment connected to the module. For example, you can connect

two or more SCXI-1334 terminal blocks; however, do not connect the SCXI-1334

with any other type of terminal block.

To expand the number of columns of a matrix, complete the following steps:

4| ni.com | NI SCXI-1334 Installation Guide

1. Connect one end of the matrix expansion cable to a row connection cable terminal in one

of the terminal blocks.

2. Connect the other end of the matrix expansion cable to a row connection cable terminal in

another terminal block.

The following figure shows how to use a matrix expansion cable with SCXI terminal

blocks to expand the number of columns of a 4×32 matrix, as an example. The matrix

expansion cable connects rows to expand the number of columns.

Figure 3. Expanding the Number of Columns with the Matrix Expansion Cable

Module 1 Matrix

Expansion

Cable

Module 2

NI SCXI-1378

1. SCXI Terminal Blocks

2. Matrix Expansion Cable

3. Row Connection Cable Terminals

The SCXI-1334 configures the SCXI-1129 as a 4×64 matrix. Connecting two SCXI-1334

terminal blocks as described above creates a 4×128 matrix.

Related Information

Installing the Terminal Block on page 6

Complete the following steps to connect the SCXI-1334 to the SCXI-1129 front panel.

NI SCXI-1334 Installation Guide | © National Instruments | 5

Installing the Terminal Block

Complete the following steps to connect the SCXI-1334 to the SCXI-1129 front panel.

Note Install the SCXI-1129 if you have not already done so. Refer to the NI

Switches Getting Started Guide for more information.

1. Plug the SCXI-1334 onto the front connector of the SCXI-1129.

2. Tighten the top and bottom thumbscrews on the terminal block rear panel to hold it

securely in place.

Figure 4. Installing the SCXI-1334 Terminal Block

NI SCXI-1378

1. Thumbscews

2. Front Connector

3. SCXI-1129

4. SCXI-1334

Related Information

Expanding the Number of Columns on page 4

The SCXI-1334 offers convenient methods for expanding the number of columns of a

matrix using two or more SCXI-1334 terminal blocks.

6| ni.com | NI SCXI-1334 Installation Guide

Expanding the Number of Rows

The SCXI-1334 offers convenient methods for expanding the number of rows of a matrix

using two or more SCXI-1334 terminal blocks.

Caution When using matrix expansion plugs, only connect terminal blocks of the

same type. Connecting different types of terminal blocks can damage the module or

the equipment connected to the module. For example, you can connect two or more

SCXI-1334 terminal blocks; however, do not connect the SCXI-1334 with any other

type of terminal block.

1. Connect a matrix expansion plug to the top or bottom column connectors of the two

terminal blocks.

2. Refer to the following figure for information about how to expand the number of rows.

The figure demonstrates how to expand the number of rows of a 4 x 32 matrix as an

example.

Figure 5. Expanding the Number of Rows with the Matrix Expansion Plug

Module 1

Matrix

Expansion

Plug

Module 2

NI SCXI-1378

1. Matrix Expansion Plug

2. Thumbscrews

3. Column Connectors

The SCXI-1334 configures the SCXI-1129 as a 4 x 64 matrix. Connecting the SCXI-1334

terminal blocks as described above creates an 8 x 64 matrix.

NI SCXI-1334 Installation Guide | © National Instruments | 7

Information is subject to change without notice. Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for

information on NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their

respective companies. For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your

software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. You can find

information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer

to the Export Compliance Information at ni.com/legal/export-compliance for the NI global trade compliance policy and how

to obtain relevant HTS codes, ECCNs, and other import/export data. NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS

TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS. U.S.

Government Customers: The data contained in this manual was developed at private expense and is subject to the applicable

limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.

372788D-01 Mar17

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