ADLINK PXI-7901 User Manual

16-CH, General-Purpose SPDT Relay

PXI-7901

Module

User’s Manual

Recycled Paper

© Copyright 2004 ADLINK Technology Inc.

All Rights Reserved.

Manual Rev. 1.00: June 28, 2004

Part Number: 50-17010-100

The information in this document is subject to change without prior notice in
order to improve reliability, design, and function and does not represent a
commitment on the part of the manufacturer.

In no event will the manufacturer be liable for direct, indirect, special,
incidental, or consequential damages arising out of the use or inability to use
the product or documentation, even if advised of the possibility of such
damages.

This document contains proprietary information protected by copyright. All
rights are reserved. No part of this manual may be reproduced by any
mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.

Trademarks

NuDAQ

®

, NuIPC®, NuDAM®, NuPRO® are registered trademarks of ADLINK
Technology Inc. Other product names mentioned herein are used for
identification purposes only and may be trademarks and/or registered
trademarks of their respective companies.

Getting Service from ADLINK

Customer Satisfaction is top priority for ADLINK Technology Inc. If you need
any help or service, please contact us.

ADLINK TECHNOLOGY INC.

Web Site http://www.adlinktech.com
Sales & Service [e-mail]
TEL [phone] FAX [phone]
Address 9F , No. 166, Jian Yi Road, Chungho City, Taipei, 235 Taiwan

Please email or FAX your detailed information for prompt, satisfactory, and
consistent service.

Detailed Company Information

Company/Organization
Contact Person
E-mail Address
Address
Country
TEL FAX
Web Site

Questions

Product Model

OS:
Computer Brand:
M/B: CPU:

Environment

Detail Description

Chipset: BIOS:
Video Card:
NIC:
Other:

Suggestions for ADLINK

Table of Contents

How to Use This Manual.............................................................. ii

Chapter 1 Introduction ..............................................................1

1.1 Features............................................................................. 1

1.2 Applications........................................................................ 2

1.3 Specifications..................................................................... 2

1.4 Software Support ............................................................... 3

Chapter 2 Installation ................................................................5

2.1 Contents.............................................................................5

2.2 Unpacking.......................................................................... 5

2.3 Mechanical Drawing...........................................................6

2.4 Installing the switch module into a PXI Platform................ 6

Chapter 3 Signal Connection.................................................... 9

3.1 PXI-7901 Topology.............................................................9

3.2 PXI-7901 Pin assignment & Description ............................ 9

3.3 TB-6201 Terminal Board .................................................. 10

Chapter 4 Operation Theorem ................................................ 11

4.1 Hardware Block Diagram................................................. 11

4.2 Operation Mode ............................................................... 12

4.3 Handshaking.................................................................... 12

4.4 Trigger Bus.......................................................................16

4.5 Star Trigger ......................................................................17

4.6 Auxiliary Digital I/O ...........................................................18

4.7 Hot-Swap ......................................................................... 19

4.8 Emergency Shutdown......................................................19

4.9 Watchdog Timer ...............................................................20

Warranty Policy........................................................................23

Table of Contents • i

How to Use This Manual

This User Manual is designed to assist users in the installation of the ADLINK
PXI-7901, 16-CH General Purpose SPDT Relay PXI Switch module.

Chapter 1 Introduction

Gives an outline and overview of ADLINK switch modules’
features, specifications, and applications.

Chapter 2 Installation

Describes how to install a switch module into a PXI chassis. For
software library and utilities installation, please refer to the
Software Users’ Guide.

Chapter 3 Signal Connection

Shows the pin assignments and terminal board connection of the
switch module.

Chapter 4 Operation Theorem

Describes function blocks on ADLINK switch modules and
operation instructions.

ii • How to use this Manual

1

Introduction

ADLINK PXI-7901 is a general-purpose (GP) switch module implementing 16­CH independent single-pole double-throw (SPDT) relays (1 Form C). PXI-7901
can connect one input to one output, and be used as signal switching or routing
for measurement systems as well as ATE.

Relays of PXI-7901 can be updated by either direct-update mode or auto-scan
mode. The latter mode supports scanlist of 1k-sample for deterministic
scanning.

PXI trigger functions are fully supported and software programmable. The
multiple switch modules can be synchronized and triggered without additional
field wiring.

For safety critical applications, PXI-7901 module can switch to the preset state
by either asserting emergency shutdown manually, or watchdog timer overflow
event.

1.1 Features

• PXI specifications Rev. 2.0 compliant

• 3U Eurocard form factor, CompactPCI compliant (PICMG 2.0 R3.0)

• PICMG 2.1 R2.0 CompactPCI Hot-Swap

• 16-CH SPDT (1 Form C) non-latching relays

• Contact rating

• 3A switching, 3A carrying

• 220V

• 125 operations per second

• 1k-sample scanlist for deterministic scanning

• Provides handshaking signals to trigger external instruments

• Programmable emergency shutdown function and Watchdog timer for

safety critical applications

• Eight auxiliary 3.3 V/TTL digital inputs/outputs with 5V tolerance

• Supports PXI backplane triggers to synchronize multiple modules

• Fully software programmable

, 250VAC

DC

specifications compliant

Introduction • 1

1.2 Applications

• Industrial ON/OFF control

• External high power relay driving and signal switching

• Laboratory automation

• Industrial automation

• Switch contact status sensing

• Limit switch monitoring

• Cooperating with other modules such as A/D and D/A peripherals to

implement a data acquisition and control system

1.3 Specifications

Relay Output

• Number of channels: 16

• Relay type: SPDT (1 Form C), non-latching

• Switching capacity:

• Max. switching current: 3A

• Max. switching voltage: 220V

• Max. switching power: 50VA, 60W
♦ Max. carrying current: 3A

• Failure rate: 10µA

• Contact resistance: 150mΩ max.

• Relay set/reset time

• Operate time: 5ms max.

• Release time: 5ms max.

• Bounce time: 3ms max.

• Expected life:

• Mechanical life: 10

• Electrical life: 10

• Data transfer: Programmed I/O

8

operations min.

6

operations min. (0.4A @ 12VAC, resistive load)

, 250VAC

DC

Auxiliary Digital I/O

• Numbers of channel: 8 inputs/outputs

• Compatibility: 3.3 V/TTL (5V tolerant)

• Data transfers: programmed I/O

Handshaking Signals

• Programmable polarity

• Logic level: 3.3 V/TTL (5V tolerant)

• Trigger In source: AUX1, PXI trigger bus, PXI star trigger in

• Scanner Advanced destination: AUX0, PXI trigger bus, PXI star trigger

out

2 • Introduction

Safety functions

• Emergency shutdown

• Logic level: 3.3 V/TTL (5V tolerant)

• Active with logic low (for AUX2/SHDNn pin)

• Emergency shutdown sources: AUX2/SHDNn, PXI star trigger

input, PXI trigger bus

• Watchdog timer

• Base clock available: 10MHz, fixed

• Counter width: 32-bit

• Watchdog Timer Overflow sources: Onboard 32-bit watchdog

timer, PXI star trigger input, PXI trigger bus

General Specifications

• I/O Connector: 62-pin D-sub male

• Operating temperature: 0 to 55°C

• Storage temperature: -20 to 70°C

• Humidity: 5 to 95% non-condensing

• Power requirements (when all relays are activated simultaneously)

+5V +3.3V

700mA 400mA

• Dimensions (not including connectors)

• 160 mm x 100 mm

1.4 Software Support

ADLINK's ADL-SWITCH driver package is for Microsoft Windows operating
systems, including Windows 98/ME/NT/2000/XP.

The driver package also provides utilities to test your switch module, as well as
programming samples and source codes in Microsoft Visual Basic and Visual
C/C++.

For other operating systems, please contact ADLINK for more information.

Introduction • 3