National Instruments NI SCXI -1366 Bedienungsanleitung

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April 2003

373639A-01

NI SCXI -1366 Installation Guide

Terminal Block for the NI SCXI-1166

This guide describes how to install and connect signals to the

National Instruments SCXI-1366 terminal block. Refer to the NI Switches

Getting Started Guide to determine when to install the terminal block.

Introduction

The SCXI-1366 terminal block installs in front of the SCXI-1166 switch

module and has screw terminals that provide access to each of the 32 relays.

Connections for the trigger output and trigger input 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 (e.g., 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.

Conventions

The following conventions are used in this guide:

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.

italic Italic text denotes variables, emphasis, a cross reference, or an introduction

to a key concept. This font also denotes text that is a placeholder for a word

or value that you must supply.

™

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NI SCXI-1366 Installation Guide 2 ni.com

1. Unpack the Terminal Block

The terminal block is shipped in an antistatic package to prevent

electrostatic damage (ESD) that can damage several components in 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 holding 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 terminal block.

Store the terminal block in the antistatic package when not in use.

2. Verify the Components

Make sure you have the following:

❑SCXI-1366 terminal block

❑SCXI chassis

❑SCXI-1166 switch module

❑Number 2 Phillips-head screwdriver

❑1/8 inch flathead screwdriver

❑Wire cutter

❑Wire insulation stripper

©National Instruments Corporation 3 NI SCXI-1366 Installation Guide

3. 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.

2. Gently pry the terminal block top cover off with a flathead screwdriver.

3. Loosen the two 10-32 ×3/4 inch screws on the strain-relief bar, leaving

plenty of space for the signal cables.

4. Pull the signal cables at least one foot through the strain-relief opening

shown in Figure 1.

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

6. Connect the wires to the terminals by inserting the stripped end of the

wire into the terminal. Secure the connection by tightening the screw

for each terminal. When connecting the signals, refer to the connection

diagram in Figure 2.

7. Tighten the two 10-32 ×3/4 inch screws on the strain-relief bar, leaving

enough space for the signal wires.

8. Snap the top cover onto the base.

NI SCXI-1366 Installation Guide 4 ni.com

Figure 1. SCXI-1366 Terminal Block

1 Strain-Relief Opening

2 Safety Ground Lug

3 Strain-Relief Bar

4 Terminal Block Top Cover

5 Screw Terminals

6 Rear Connector

7 Thumbscrews

8 10-32 ×3/4 Inch Screw

9 Signal Wires

©National Instruments Corporation 5 NI SCXI-1366 Installation Guide

Figure 2. SCXI-1366 Terminal Block Signal Connections

62 POSITION DSUB CONNECTOR 62 POSITION DSUB CONNECTOR

0-3.3 V TRIGGERING

USE SHIELDED COAX CABLE

5.5 V MAX

CH 0CH 1CH 2CH 3CH 4CH 5CH 6CH 7

CH 23

150 VDC / 125 VRMS MAX 5 A MAX

CH 15

CH 25CH 26CH 27CH 28CH 29CH 30 CH 24

CH 19

CH 11

CH 9

CN CNN

CH 8

OCO

NNCNN

CH 10

OCOCO

CH 17 CH 16

CH 18

CH 13

NNCNN

CH 12

COC

NCNCN

CH 14

OCO

CH 21 CH 20

CH 22

TRIG IN

TRIG OUT

GND

CH 31

NI SCXI-1366 Installation Guide 6 ni.com

4. Install the Terminal Block

To connect the SCXI-1366 terminal block to the SCXI-1166 front panel,

complete the following steps:

1. Connect the terminal block front connectors to its mating connectors

on the terminal block.

2. Tighten the top and bottom thumbscrews on the back of the terminal

block rear panel to hold it securely in place.

Figure 3. Installing the SCXI-1366 Terminal Block

1 SCXI-1166

2 Thumbscrews

3 SCXI-1366 Terminal Block

4 Signal Wires

©National Instruments Corporation 7 NI SCXI-1366 Installation Guide

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 3111-1, UL 61010B-1

• CAN/CSA C22.2 No. 1010.1

Note For UL and other safety certifications refer to the product label or visit ni.com.

Electromagnetic Compatibility

Emissions ............................................... EN 55011 Class A at 10 m

FCC Part 15A above 1 GHz

Immunity................................................ EN 61326:1997 + A2:2001,

Table 1

EMC/EMI............................................... CE, C-Tick, and FCC Part 15

(Class A) Compliant

Note For EMC compliance, you must operate this device with shielded cabling.

CE Compliance

This product meets the essential requirements of applicable European

Directives, as amended for CE marking, as follows:

Low-Voltage Directive (safety) ............. 73/23/EEC

Electromagnetic Compatibility

Directive (EMC) .................................... 89/336/EEC

Note Refer to the Declaration of Conformity (DoC) for this product for any additional

regulatory compliance information. To obtain the DoC for this product, click Declarations

of Conformity Information at ni.com/hardref.nsf/.

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