Industrial Digital Input/Output –
60 V, Channel-to-Channel Isolated
NI 6528, NI PXI-6529 NEW!
• 24 or 48 channel-to-channel optically
isolated inputs and solid-state relay outputs
• High-reliability industrial feature set –
isolation, programmable power-up states,
digital I/O watchdogs, change detection,
and programmable input filters
• High-voltage input to PXI trigger bus
or RTSI bus
• Superior features for automotive,
aerospace, industrial monitoring, and
control applications
• NI-DAQmx driver software for highest
productivity and performance
Operating Systems
• Windows Vista/XP/2000
• LabVIEW Real-Time
Recommended Software
• LabVIEW
• LabWindows™/CVI
• Measurement Studio
Other Compatible Software
• LabVIEW SignalExpress
• Visual Studio .NET
• C/C++/C#
Measurement Services
Software (included)
• NI-DAQmx driver software
• Measurement & Automation
Explorer configuration utility
• LabVIEW SignalExpress LE
data-logging software
Family
NI 6528
NI 6529
Bus
PCI, PXI
PXI
Input Lines
24
48
Output Lines
24
–
Isolation
Channel-to-channel
Channel-to-channel
Max Range
±60 VDC
±60 VDC
Low Threshold
1 VDC
1 VDC
High Threshold
3.2 VDC
3.2 VDC
Output Current
150 mA
–
Industrial Feature Set
3
3
Table 1. NI 6528 and PXI-6529 Specifications Overview
Overview and Applications
Hardware
National Instruments 6528 and PXI-6529 devices are industrial
channel-to-channel isolated digital I/O interfaces for PCI and
PXI. You can use the optically isolated inputs of NI 6528 and
PXI-6529 devices to read the status of sensors, actuators, and logic
devices. NI 6528 devices have 24 solid-state relay outputs to switch
external devices with input currents up to 150 mA. With high current
drive and isolation, NI 6528 and PXI-6529 devices are ideal for a variety
of applications from automotive design, industrial factory automation,
and machine control to aerospace, laboratory research, and biomedical
applications. Industrial digital I/O devices are designed to incorporate
the latest hardware technologies for applications requiring ease of use,
high reliability, and performance. NI 6528 and PXI-6529 devices are
jumper-free and take advantage of NI-DAQmx measurement services
software to speed up application development with features such as
DAQ Assistant, automatic code generation, and high-performance
multithreaded streaming technology.
Industrial Feature Set
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NI industrial digital I/O devices provide a set of high-reliability features
designed to automate even the most demanding applications.
• Isolation offers an extended voltage range for direct connection
to industrial sensors and actuators
• Programmable power-up states provide safe operation
when connected to pumps/valves/motors/relays
• Digital I/O watchdog timers detect computer or application crashes
and ensure safe recovery
• Change detection triggers your application and performs a read
operation after a digital event with minimal processor usage
• Programmable input filters eliminate glitches/spikes and remove noise
• Industrial certifications from CE, FCC, C-Tick, UL, and VDE ensure EMI
compliance in most regions of the world and certify that the system
is safe to operate
Industrial Digital Input/Output – 60 V, Channel-to-Channel Isolated
Connect Sensors Directly with Isolation
Isolation is a form of built-in signal conditioning that provides an
extended voltage range for direct connection to industrial sensors and
actuators. NI 6528 and PXI-6529 devices provide channel-to-channel
isolation where every channel is physically and electrically separated
from the others and earth ground. Optical isolators separate the highvoltage front end from the low-voltage back end, breaking ground
loops, improving common-mode voltage rejection, and protecting
computer circuitry from hazardous voltages. Industrial environments
containing machinery and inductive loads require isolation to protect
the electronics from transient voltage spikes and provide greater
common-mode noise rejection.
Achieve Glitch-Free Startup with
Programmable Power-Up States
Using programmable power-up states, you can configure the initial
NI 6528 output states in software to ensure glitch-free operation
when connected to industrial actuators such as pumps, valves, motors,
and relays. An NI 6528 holds these output states after receiving power,
so your computer can boot and your software application can begin
running. Programmable power-up states are glitch-free, meaning the
outputs never go through an incorrect state during power up.
You can configure each individual digital line as high-output or
low-output. An NI 6528 stores the settings in onboard nonvolatile
memory and implements the power-up states instantaneously after
power is applied to the device.
Detect Faults and Recover with Digital
I/O Watchdogs
Digital I/O watchdog timers are an innovative technology that can
detect a variety of fault conditions, such as an application crash, and
automatically respond by setting the outputs to a user-configured safe
state. Watchdogs are important whenever the module is connected to
actuators such as pumps, valves, motors, and relays. An NI 6528
monitors the software application; if the application fails to respond
within a preset time limit, an NI 6528 automatically sets the output
lines to a user-defined safe state. An NI 6528 remains in the watchdog
state until the watchdog timer is disarmed, an NI 6528 is reset, or the
computer is restarted.
Trigger Your Application with
Change Detection
With change detection, you can automatically trigger your software
application to perform a digital read operation upon a digital change
of state. A digital change of state is defined as the rising edge
(0 to 1 transition) or falling edge (1 to 0 transition) on one or more
digital lines. Using change detection, you can monitor for digital
events with minimal processor usage. No polling is necessary because
the digital I/O module generates an interrupt to automatically wake
up your application.
Using NI-DAQmx software technology, NI 6528 and PXI-6529 devices
notify the software application when an event is detected, causing the
application to automatically perform a read operation. To minimize
the effects of noisy input lines, use programmable input filters in
combination with change detection to eliminate spurious changedetection events caused by noise or glitches.
Eliminate Noise with Programmable
Input Filters
Programmable input filters remove noise, glitches, and spikes on
inputs as well as provide debouncing for digital switches and relays.
These features are important for applications in industrial environments
to prevent false readings caused by noise. You can configure the
programmable input filter for each digital line by setting the filter time.
NI 6528 and PXI-6529 devices block any digital noise, glitch, or spike
that is shorter than half of the specified filter time, preventing invalid
readings and false triggers for change-detection events.
Use High-Voltage Triggering
With NI 6528 and PXI-6529 devices, you can route isolated high-voltage
(±60 VDC) signals to the PXI trigger bus or RTSI (Real-Time System
Integration) bus, so you can synchronize between multiple high-voltage
devices without additional circuitry. This feature benefits automotive,
aerospace, and industrial monitoring and control applications needing
high-voltage triggers.
Recommended Software
National Instruments measurement services software, built around
NI-DAQmx driver software, includes intuitive application programming
interfaces, configuration tools, I/O assistants, and other tools designed
to reduce system setup, configuration, and development time. National
Instruments recommends using the latest version of NI-DAQmx driver
software for application development in National Instruments LabVIEW,
LabWindows/CVI, and Measurement Studio. To obtain the latest version
of NI-DAQmx, visit ni.com/support/daq/versions. NI measurement
services software speeds up your development with features including:
• A guide to create fast and accurate measurements with no
programming using the DAQ Assistant
• Free LabVIEW SignalExpress LE data-logging software
• Automatic code generation to create your application in NI LabVIEW,
LabWindows/CVI, and LabVIEW SignalExpress as well as Microsoft Visual
Studio .NET, C/C++/C#, or Visual Basic using NI Measurement Studio
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Industrial Digital Input/Output – 60 V, Channel-to-Channel Isolated
• Multithreaded technology for 1,000 times performance improvements
• Automatic timing, triggering, and synchronization routing to make
advanced applications easy
• More than 3,000 free software downloads to jump-start your project
available at ni.com/zone
• Software configuration of all digital I/O features without hardware
switches/jumpers
NI 6528 and PXI-6529 devices are compatible with the following
versions (or later) of NI application software: LabVIEW, LabWindows/CVI,
or Measurement Studio versions 7.x; LabVIEW SignalExpress 1.x; or
LabVIEW with the LabVIEW Real-Time Module 7.1. NI 6528 and PXI-6529
devices are not compatible with the Traditional NI-DAQ (Legacy) driver.
Digital I/O Cables and Accessories
The 100-pin high-density SCSI connector on NI 6528 and PXI-6529
devices interfaces to 100-pin ribbon cables or shielded cables. For
low-cost unshielded connectivity, use the R1005050 ribbon cable with
two CB-50LP or CB-50 connector blocks (a CB-100 kit). For shielded
connectivity, use the SH100-100-F shielded digital I/O cable with the
SCB-100 connector block.
SH100-100-F – Shielded 100-conductor cable that terminates with a
100-pin 0.050 series D-type connector that attaches to 100-pin accessories.
1 m cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185095-01
2 m cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185095-02
SH100-100-F
R1005050
SCB-100
R1005050 – Unshielded ribbon cable that terminates with two
50-pin IDC connectors.
0.5 m cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182762-0R5
1 m cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182762-01
2 m cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182762-02
SCB-100 – Shielded I/O connector block with screw terminals and
a general breadboard area for 100-pin digital I/O devices.
SCB-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .776990-01
CB-50 – Unshielded I/O connector block with DIN-rail mounting and screw
terminals. Includes 50-pin header for direct connection to 50-pin cables.
CB-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .776164-90
CB-50LP – Unshielded termination board with 50 screw terminals.
Includes a 50-pin header for direct connection to 50-pin cables.
CB-50LP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .777101-01
CB-100 Connector Kit – Includes two CB-50 I/O connector blocks and
a 1 m R1005050 ribbon cable.
CB-100 with 1 m R1005050 cable . . . . . . . . . . . . . . . . . . . .777812-01
PCB Mounting Connectors – PCB connectors for use in building custom
accessories that connect to 100-conductor shielded and ribbon cables.
100-pin, female, right-angle mounting . . . . . . . . . . . . . . . .777778-01
100-pin, female, vertical mounting . . . . . . . . . . . . . . . . . . .777779-01
CB-50
CB-50LP
Ordering Information
NI PCI-6528 .......................................................................... 778833-01
NI PXI-6528 .......................................................................... 778543-01
NI PXI-6529 .......................................................................... 779949-01
BUY NOW!
CB-100
PCB Mounting Connectors
For complete product specifications, pricing, and accessory
information, call 800 813 3693 (U.S.) or go to ni.com/dataacquisition.
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Industrial Digital Input/Output – 60 V, Channel-to-Channel Isolated
Operating Environment
Specifications
These specifications are typical at 25 °C, unless otherwise noted.
Digital Inputs
NI 6528................................................ 24, ch-ch isolated
NI PXI-6529 ......................................... 48, ch-ch isolated
I/O connector ...................................... 100-pin keyed female
SCSI connector
Input voltage range............................. -60 to 60 VDC
Digital logic levels
Level
Input low voltage
Input high voltage
Min
-60 VDC
3.2 VDC
Max
1 VDC
60 VDC
Input current
5 V inputs........................................ 1.5 mA/channel max
60 V inputs...................................... 3 mA/channel max
Isolation............................................... 60 VDC channel-to-channel and
channel-to-earth
Digital Output (NI 6528 Only)
Number of channels............................ 24, ch-ch isolated
Relay type ........................................... Normally open form A
solid-state relays
Max Switching Voltage
AC ................................................... 30 Vrms (42 V peak)
DC ................................................... 60 VDC
Max switching capacity...................... 150 mA
Common-mode isolation..................... 60 VDC
30 Vrms (42 V peak)
(ch-ch and ch-earth)
On-resistance ...................................... 18 Ω, max
Output capacitance............................. 50 pF at 50 V
Off-leakage current (max) ................... 1 µA
Relay set time (max) ........................... 5.0 ms
Relay reset time (max) ........................ 5.0 ms
Default power-on state....................... Relays open
Ambient temperature ......................... 0 to 55 °C
Relative humidity ................................ 10 to 90%, noncondensing
Altitude .............................................. 2,000 m at 25 °C ambient
temperature
(tested in accordance with IEC-60068-2-1, IEC-60068-2-2, and IEC-60068-2-56)
Storage Environment
Ambient temperature ......................... -20 to 70 °C
Relative humidity ............................... 5% to 95%, noncondensing
(tested in accordance with IEC-60068-2-1, IEC-60068-2-2, and IEC-60068-2-56)
Shock and Vibration (PXI-6528 and PXI-6529 only)
Operational shock .............................. 30 g peak, half-sine,
11 ms pulse
(tested in accordance with IEC-60068-2-27; test profile developed in accordance with
MIL-PRF-28800F)
Random vibration
Operating ....................................... 5 to 500 Hz, 0.3 grms
Nonoperating ................................. 5 to 500 Hz, 2.4 grms
(tested in accordance with IEC-60068-2-64; nonoperating test profile developed in accordance
with MIL-PRF-28800F, Class 3)
Safety
NI 6528 and PXI-6529 devices are 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 61010-1, CSA 61010-1
For UL and other safety certifications, refer to the product label, or visit
ni.com/certification, search by model number or product line, and click
the appropriate link in the Certification column.
Electromagnetic Compatibility
• EN 55011 Emissions; Group 1, Class A
• EN 61326 EMC requirements; Minimum Immunity
• CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A Compliant
For EMC compliance, operate this device according to product documentation.
Power Requirements
CE Compliance
+5 VDC (±5%)...................................... 300 mA, typical (excluding the
power consumed through the
I/O connector)
+3.3 VDC (±5%)................................... 600 mA, typical
Power available at I/O connector....... +4.5 to +5.25 VDC, fused at 1 A
This product meets the essential requirements of applicable
European Directives, as amended for CE marking, as follows:
• 73/23/EEC; Low-Voltage Directive (safety)
• 89/336/EEC; Electromagnetic Compatibility Directive (EMC)
Physical
Dimensions
PCI-6528 (w/o connectors) ............. 17.5 by 10.7 cm (6.9 by 4.2 in.)
PXI-6528 (w/o connectors) ............. 16 by 10 cm (6.3 by 3.9 in.)
PXI-6529 (w/o connectors) ............. 16 by 10 cm (6.3 by 3.9 in.)
Refer to the Declaration of Conformity (DoC) for this product for any
additional regulatory compliance information. To obtain the DoC for this
product, visit ni.com/certification, search by model number or product
line, and click the appropriate link in the Certification column.
Environment
NI 6528 and PXI-6529 devices are intended for indoor use only.
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NI Services and Support
NI has the services and support to meet
your needs around the globe and through
the application life cycle – from planning
and development through deployment
and ongoing maintenance. We offer
services and service levels to meet
customer requirements in research,
design, validation, and manufacturing.
Visit ni.com/services.
Training and Certification
NI training is the fastest, most certain route to productivity with our
products. NI training can shorten your learning curve, save development
time, and reduce maintenance costs over the application life cycle. We
schedule instructor-led courses in cities worldwide, or we can hold a
course at your facility. We also offer a professional certification program
that identifies individuals who have high levels of skill and knowledge on
using NI products. Visit ni.com/training.
Professional Services
Our NI Professional Services team is composed of NI applications
and systems engineers and a worldwide National Instruments Alliance
Partner program of more than 600 independent consultants and
integrators. Services range
from start-up assistance to
turnkey system integration.
Visit ni.com/alliance.
OEM Support
We offer design-in consulting and product integration assistance if you
want to use our products for OEM applications. For information about
special pricing and services for OEM customers, visit ni.com/oem.
ni.com • 800 813 3693
National Instruments • info@ni.com
Local Sales and Technical Support
In offices worldwide, our staff is local to the country, giving you access
to engineers who speak your language. NI delivers industry-leading
technical support through online knowledge bases, our applications
engineers, and access to 14,000 measurement and automation
professionals within NI Developer Exchange forums. Find immediate
answers to your questions at ni.com/support.
We also offer service programs that provide automatic upgrades to
your application development environment and higher levels of technical
support. Visit ni.com/ssp.
Hardware Services
NI Factory Installation Services
NI Factory Installation Services (FIS) is the fastest and easiest way to
use your PXI or PXI/SCXI combination systems right out of the box.
Trained NI technicians install the software and hardware and configure
the system to your specifications. NI extends the standard warranty by
one year on hardware components (controllers, chassis, modules)
purchased with FIS. To use FIS, simply configure your system online
with ni.com/pxiadvisor.
Calibration Services
NI recognizes the need to maintain properly calibrated devices for
high-accuracy measurements. We provide manual calibration
procedures, services to recalibrate your products, and automated
calibration software specifically designed for use by metrology
laboratories. Visit ni.com/calibration.
Repair and Extended Warranty
NI provides complete repair services for our products. Express repair
and advance replacement services are also available. We offer
extended warranties to help you meet project life-cycle requirements.
Visit ni.com/services.
*351500A-01*
351500A-01
2007-8837-301-101-D
© 2007 National Instruments Corporation. All rights reserved. CVI, LabVIEW, Measurement Studio, National Instruments, National Instruments Alliance Partner, NI, ni.com, RTSI, SCXI,
and SignalExpress are trademarks of National Instruments. The mark LabWindows is used under a license from Microsoft Corporation. Other product and company names listed are
trademarks or trade names of their respective companies. A National Instruments Alliance Partner is a business entity independent from NI and has no agency, partnership, or joint-venture relationship with NI.
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