National Instruments NI SCXI -1366 User manual

©2003 National Instruments Corp. All rights reserved.
National Instruments™, NI™, ni.com™, and SCXI™ are trademarks of National Instruments Corporation. Product and
company names mentioned herein are trademarks or trade names of their respective companies. For patents covering
National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file
on your CD, or ni.com/patents.
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.
™
ni.com

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
5
2
4
8
1
6
7
3
9

©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
N
O
C
O
M
C
O
M
N
O
N
C
C
O
M
N
O
N
C
C
O
M
N
O
N
C
N
O
N
C
N
O
C
O
M
N
CO
NN
C
C
O
M
N
O
N
C
C
O
M
N
C
C
O
M
C
N
CH 23
N
O
150 VDC / 125 VRMS MAX 5 A MAX
150 VDC / 125 VRMS MAX 5 A MAX
150 VDC / 125 VRMS MAX 5 A MAX
N
C
CH 15
CH 25CH 26CH 27CH 28CH 29CH 30 CH 24
O
C
M
CH 19
M
O
C
CH 11
C
M
O
CH 9
CN CNN
CH 8
M
OC
M
OCO
NNCNN
CH 10
M
OCOCO
CH 17 CH 16
C
N
M
O
CN
O
M
O
C
O
N
C
N
O
M
C
C
N
O
M
C
O
N
CH 18
N
C
N
O
M
O
C
C
N
O
N
C
N
O
C
M
O
N
C
N
O
N
CH 13
NNCNN
CH 12
COC
M
OO
NCNCN
CH 14
O
M
OCO
M
O
CH 21 CH 20
O
N
C
NN
O
N
C
M
C
O
C
N
O
N
C
N
O
N
O
M
C
CH 22
O
N
M
O
CN
C
M
O
C
C
N
C
N
O
M
C
O
N
O
C
M
O
N
TRIG IN
TRIG OUT
GND
GND
CH 31
NC
O
M
O
M
O
CN
C
O
C
M
O
N

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
3
2
1
4

©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/.