National Instruments Network Card NI 9476 User Manual

ONPIER9AT4IN7G6INSTRUCTIONS AND SPECIFICATIONS  
32-Channel, 24 V, Sourcing Digital Output Module  
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Safety Guidelines  
Operate the NI 9476 only as described in these operating  
instructions.  
Hot Surface This icon denotes that the component may be  
hot. Touching this component may result in bodily injury.  
Safety Guidelines for Hazardous Locations  
The NI 9476 is suitable for use in Class I, Division 2, Groups A, B,  
C, D, T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4, and  
Ex nC IIC T4 hazardous locations; and nonhazardous locations  
only. Follow these guidelines if you are installing the NI 9476 in a  
potentially explosive environment. Not following these guidelines  
may result in serious injury or death.  
Caution Do not disconnect I/O-side wires or connectors  
unless power has been switched off or the area is known  
to be nonhazardous.  
Caution Do not remove modules unless power has been  
switched off or the area is known to be nonhazardous.  
© National Instruments Corp.  
3
NI 9476 Operating Instructions and Specifications  
 
Caution Substitution of components may impair  
suitability for Class I, Division 2.  
Caution For Zone 2 applications, install the system  
in an enclosure rated to at least IP 54 as defined by  
IEC 60529 and EN 60529.  
Caution For Zone 2 applications, install a protection  
device between the external power supply and the Vsup  
pin. The device must prevent the Vsup-to-COM voltage  
from exceeding 50 V if there is a transient overvoltage  
condition.  
Special Conditions for Hazardous Locations Use in Europe  
This equipment has been evaluated as EEx nC IIC T4 equipment  
under DEMKO Certificate No. 03 ATEX 0324020X. Each module  
is marked  
II 3G and is suitable for use in Zone 2 hazardous  
locations. If you are using the NI 9476 in Gas Group IIC hazardous  
locations or in ambient temperatures of –40 °C Ta 70 °C, you  
must use the device in an NI chassis that has been evaluated as  
EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.  
NI 9476 Operating Instructions and Specifications  
4
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Special Conditions for Marine Applications  
Some modules are Lloyd’s Register (LR) Type Approved for  
marine applications. To verify Lloyd’s Register certification, visit  
ni.com/certification and search for the LR certificate, or  
look for the Lloyd’s Register mark on the module.  
Caution To meet radio frequency emission requirements  
for marine applications, use shielded cables and install  
the system in a metal enclosure. Suppression ferrites  
must be installed on power supply inputs near power  
entries to modules and controllers. Power supply and  
module cables must be separated on opposite sides of the  
enclosure and must enter and exit through opposing  
enclosure walls.  
© National Instruments Corp.  
5
NI 9476 Operating Instructions and Specifications  
 
Connecting the NI 9476  
The NI 9476 has a 37-pin DSUB connector that provides  
connections for 32 digital output channels.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
DO0  
DO1  
DO2  
DO3  
DO4  
DO5  
DO6  
DO7  
DO16  
DO17  
DO18  
DO19  
DO20  
DO21  
DO22  
DO23  
Vsup  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
Vsup  
Vsup  
DO8  
Vsup  
DO24  
DO25  
DO26  
DO27  
DO28  
DO29  
DO30  
DO31  
DO9  
DO10  
DO11  
DO12  
DO13  
DO14  
DO15  
COM  
Figure 1. NI 9476 Pin Assignments  
NI 9476 Operating Instructions and Specifications  
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Each channel has a DO pin to which you can connect a digital input  
device. The 32 digital output channels are internally referenced to  
COM.  
You must connect an external power supply to the NI 9476. The  
power supply provides the current for the output channels. Connect  
the positive lead of the power supply to the supply pin, Vsup, and  
the negative lead of the power supply to the common pin, COM.  
Refer to the Specifications section for information about the power  
supply voltage range.  
Note The Vsup pins are internally connected. You can  
connect only one external voltage supply to the device.  
Caution Do not remove or insert modules if the external  
power supply connected to the Vsup and COM pins is  
powered on.  
The NI 9476 has current sourcing outputs, meaning the DO pin is  
driven to Vsup when the channel is turned on.  
© National Instruments Corp.  
7
NI 9476 Operating Instructions and Specifications  
 
You can directly connect the NI 9476 to a variety of industrial  
devices such as solenoids, motors, actuators, relays, and lamps.  
Make sure the devices you connect to the NI 9476 are compatible  
with the output specifications of the module. Refer to the  
Specifications section for more information about the output  
specifications.  
Connect the device to DO and COM, and connect the external  
power supply to Vsup and COM, as shown in Figure 2.  
V
sup  
External  
Power  
Supply  
+
_
DO  
Device  
COM  
NI 9476  
Figure 2. Connecting a Device to the NI 9476  
NI 9476 Operating Instructions and Specifications  
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Increasing Current Drive  
Each channel has a continuous output current of 250 mA. If you  
want to increase the output current to a device, you can connect  
any number of channels together in parallel. For example, if you  
want to drive 1 A of current, connect DO<0..3> in parallel as  
shown in Figure 3. You must turn all parallel channels on and off  
simultaneously so that the current on any single channel cannot  
exceed the 250 mA rating.  
V
sup  
1 A  
DO0  
250 mA  
External  
Power  
Supply  
+
_
DO1 250 mA  
Device  
250 mA  
250 mA  
DO2  
DO3  
COM  
NI 9476  
Figure 3. Increasing the Current to a Device Connected to the NI 9476  
© National Instruments Corp.  
9
NI 9476 Operating Instructions and Specifications  
 
 
Protecting the Module from Flyback Voltages  
If the module is switching an inductive or energy-storing device  
such as a solenoid, motor, or relay, and the device does not have  
flyback protection, install an external flyback diode as shown in  
Figure 4.  
V
sup  
External  
Power  
Supply  
+
_
DO  
Flyback  
Diode  
Inductive  
Device  
COM  
NI 9476  
Figure 4. Connecting a Flyback Diode to the NI 9476  
NI 9476 Operating Instructions and Specifications  
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I/O Protection  
The NI 9476 is protected against overcurrent, inrush, and  
short-circuit conditions in accordance with IEC 1131-2.  
Understanding Protected Devices  
Each channel on the NI 9476 has circuitry that protects it from  
voltage and current surges resulting from short circuits.  
Caution The NI 9476 can be damaged under overvoltage  
and reverse bias voltage conditions. Check the voltage  
specifications for all devices that you connect to the  
NI 9476.  
Excessive current through a DO pin causes the channel to go into  
an overcurrent state. In an overcurrent state, the channel cycles off  
and on until the short circuit is removed or the current returns to an  
acceptably low level. Refer the Specifications section for typical  
trip currents.  
Each channel has a status line that indicates in software whether the  
channel is in an overcurrent state. Refer to the software help for  
information about reading output status.  
© National Instruments Corp.  
11 NI 9476 Operating Instructions and Specifications  
 
Sleep Mode  
This module supports a low-power sleep mode. Support for sleep  
mode at the system level depends on the chassis that the module is  
plugged into. Refer to the chassis manual for information about  
support for sleep mode. If the chassis supports sleep mode, refer to  
the software help for information about enabling sleep mode. Visit  
ni.com/info and enter cseriesdoc for information about  
C Series documentation.  
Typically, when a system is in sleep mode, you cannot  
communicate with the modules. In sleep mode, the system  
consumes minimal power and may dissipate less heat than it does  
in normal mode. Refer to the Specifications section for more  
information about power consumption and thermal dissipation.  
NI 9476 Operating Instructions and Specifications  
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Specifications  
The following specifications are typical for the range –40 to 70 °C  
unless otherwise noted. All voltages are relative to COM unless  
otherwise noted.  
Output Characteristics  
Number of channels..........................32 digital output channels  
Output type .......................................Sourcing  
Output voltage (V0)...........................Vsup – (I0R0)  
Power-on output state .......................Channels off  
External power supply  
voltage range (Vsup)...........................636 VDC  
Continuous output current (I0) per channel  
With 6–30 VDC  
supply voltage.............................250 mA max  
With 30–36 VDC  
supply voltage.............................200 mA max  
Output impedance (R0) .....................0.3 Ω max  
© National Instruments Corp.  
13 NI 9476 Operating Instructions and Specifications  
 
 
Continuous overvoltage  
protection (Vsup)................................up to 40 V max  
Reversed-voltage protection .............None  
Current limiting ................................None  
Short-circuit protection.....................Indefinitely protected when a  
channel is shorted to COM or  
to a voltage up to Vsup  
Trip current for one channel  
With all other channels  
at rated current............................3 A typ  
With all other channels off .........5 A typ  
Vsup current consumption..................28 mA max  
Maximum update rate.......................40 μs max  
Propagation delay .............................500 μs max  
NI 9476 Operating Instructions and Specifications  
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MTBF ...............................................1,091,425 hours at 25 °C;  
Bellcore Issue 2, Method 1,  
Case 3, Limited Part Stress  
Method  
Note Contact NI for Bellcore MTBF specifications  
at other temperatures or for MIL-HDBK-217F  
specifications.  
Power Requirements  
Power consumption from chassis  
Active mode ...............................250 mW max  
Sleep mode .................................25 μW max  
Thermal dissipation (at 70 °C)  
Active mode ...............................1.5 W max  
Sleep mode .................................30 mW max  
Physical Characteristics  
If you need to clean the module, wipe it with a dry towel.  
Weight...............................................147 g (5.2 oz)  
© National Instruments Corp.  
15 NI 9476 Operating Instructions and Specifications  
 
Safety  
Maximum Voltage1  
Connect only voltages that are within the following limits.  
Vsup-to-COM.....................................36 VDC,  
Measurement Category 1  
Measurement Category I is for measurements performed on  
circuits not directly connected to the electrical distribution system  
referred to as MAINS voltage. MAINS is a hazardous live electrical  
supply system that powers equipment. This category is for  
measurements of voltages from specially protected secondary  
circuits. Such voltage measurements include signal levels, special  
equipment, limited-energy parts of equipment, circuits powered by  
regulated low-voltage sources, and electronics.  
Caution Do not connect the NI 9476 to signals or use  
for measurements within Measurement Categories II, III,  
or IV.  
1 The maximum voltage that can be applied or output between Vsup and COM without  
creating a safety hazard.  
NI 9476 Operating Instructions and Specifications  
16  
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Isolation Voltages  
Channel-to-channel...........................No isolation between  
channels  
Channel-to-earth ground  
Continuous .................................60 VDC,  
Measurement Category I  
Withstand....................................1,000 Vrms, verified by a 5 s  
dielectric withstand test  
Safety Standards  
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 61010-1, CSA 61010-1  
Note For UL and other safety certifications, refer to the  
product label or visit ni.com/certification, search  
by module number or product line, and click the  
appropriate link in the Certification column.  
© National Instruments Corp.  
17 NI 9476 Operating Instructions and Specifications  
 
Hazardous Locations  
U.S. (UL) ..........................................Class I, Division 2,  
Groups A, B, C, D, T4;  
Class I, Zone 2,  
AEx nC IIC T4  
Canada (C-UL) .................................Class I, Division 2,  
Groups A, B, C, D, T4;  
Class I, Zone 2,  
Ex nC IIC T4  
Europe (DEMKO).............................EEx nC IIC T4  
Environmental  
National Instruments C Series modules are intended for indoor use  
only but may be used outdoors if installed in a suitable enclosure.  
Refer to the manual for the chassis you are using for more  
information about meeting these specifications.  
Operating temperature  
(IEC 60068-2-1, IEC 60068-2-2) .....40 to 70 °C  
Storage temperature  
(IEC 60068-2-1, IEC 60068-2-2) .....40 to 85 °C  
Ingress protection..............................IP 40  
NI 9476 Operating Instructions and Specifications  
18  
ni.com  
 
Operating humidity  
(IEC 60068-2-56)..............................10 to 90% RH,  
noncondensing  
Storage humidity  
(IEC 60068-2-56)..............................5 to 95% RH,  
noncondensing  
Maximum altitude.............................2,000 m  
Pollution Degree (IEC 60664)..........2  
Shock and Vibration  
To meet these specifications, you must panel mount the system.  
Operating vibration  
Random (IEC 60068-2-64).........5 grms, 10 to 500 Hz  
Sinusoidal (IEC 60068-2-6) .......5 g, 10 to 500 Hz  
Operating shock  
(IEC 60068-2-27)..............................30 g, 11 ms half sine,  
50 g, 3 ms half sine,  
18 shocks at 6 orientations  
© National Instruments Corp.  
19 NI 9476 Operating Instructions and Specifications  
 
Electromagnetic Compatibility  
This product is designed to meet the requirements of the following  
standards of EMC for electrical equipment for measurement,  
control, and laboratory use:  
EN 61326 EMC requirements; Industrial Immunity  
EN 55011 Emissions; Group 1, Class A  
CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A  
Note For EMC compliance, operate this device with  
shielded cabling.  
NI 9476 Operating Instructions and Specifications  
20  
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CE Compliance  
This product meets the essential requirements of applicable  
European directives, as amended for CE markings, as follows:  
2006/95/EC; Low-Voltage Directive (safety)  
2004/108/EC; Electromagnetic Compatibility Directive  
(EMC)  
Note 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 module number or  
product line, and click the appropriate link in the  
Certification column.  
Environmental Management  
National Instruments is committed to designing and manufacturing  
products in an environmentally responsible manner. NI recognizes  
that eliminating certain hazardous substances from our products is  
beneficial not only to the environment but also to NI customers.  
© National Instruments Corp.  
21 NI 9476 Operating Instructions and Specifications  
 
For additional environmental information, refer to the NI and the  
Environment Web page at ni.com/environment. This page  
contains the environmental regulations and directives with which  
NI complies, as well as other environmental information not  
included in this document.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of their life cycle, all products  
must be sent to a WEEE recycling center. For more  
information about WEEE recycling centers and National  
Instruments WEEE initiatives, visit ni.com/  
environment/weee.htm.  
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NI 9476 Operating Instructions and Specifications  
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Where to Go for Support  
The National Instruments Web site is your complete resource for  
technical support. At ni.com/support you have access to  
everything from troubleshooting and application development  
self-help resources to email and phone assistance from  
NI Application Engineers.  
National Instruments corporate headquarters is located at  
11500 North Mopac Expressway, Austin, Texas, 78759-3504.  
National Instruments also has offices located around the world to  
help address your support needs. For telephone support in the  
United States, create your service request at ni.com/support  
and follow the calling instructions or dial 512 795 8248. For  
telephone support outside the United States, contact your local  
branch office:  
Australia 1800 300 800, Austria 43 662 457990-0,  
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,  
Canada 800 433 3488, China 86 21 5050 9800,  
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,  
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,  
Germany 49 89 7413130, India 91 80 41190000,  
Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196,  
© National Instruments Corp.  
23 NI 9476 Operating Instructions and Specifications  
 
Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,  
Malaysia 1800 887710, Mexico 01 800 010 0793,  
Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322,  
Norway 47 (0) 66 90 76 60, Poland 48 22 3390150,  
Portugal 351 210 311 210, Russia 7 495 783 6851,  
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,  
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,  
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,  
Taiwan 886 02 2377 2222, Thailand 662 278 6777,  
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545  
National Instruments, NI, ni.com, and LabVIEW are trademarks of National Instruments Corporation. Refer to the  
Terms of Use section on ni.com/legal for more information about National Instruments trademarks. Other  
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 media, or ni.com/patents.  
© 2005–2008 National Instruments Corp. All rights reserved.  
373964D-01  
Apr08  
 

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