National Instruments Network Card NI 9475 User Manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS  
NI 9475  
8-Channel, 60 V, High-Speed, Sourcing Digital Output  
Module  
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Safety Guidelines  
Operate the NI 9475 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 9475 is suitable for use in Class I, Division 2, Groups A, B,  
C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4, and  
Ex nA IIC T4 hazardous locations; and nonhazardous locations  
only. Follow these guidelines if you are installing the NI 9475 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.  
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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 input signal and the NI 9475 input  
pin. The device must prevent the input Vsup-to-COM  
voltage from exceeding 84 V if there is a transient  
overvoltage condition.  
Special Conditions for Hazardous Locations Use in Europe  
This equipment has been evaluated as Ex nA IIC T4 equipment  
under DEMKO Certificate No. 07 ATEX 0626664X. Each module  
is marked  
II 3G and is suitable for use in Zone 2 hazardous  
locations. If you are using the NI 9475 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 9475 Operating Instructions and Specifications  
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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.  
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Connecting the NI 9475  
The NI 9475 has a 25-pin DSUB connector that provides  
connections for eight digital output channels.  
0
4
3
7
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
COM  
Vsup  
COM  
COM  
Vsup  
COM  
COM  
Vsup  
COM  
COM  
Vsup  
COM  
COM  
DO0  
Vsup  
DO1  
DO2  
Vsup  
DO3  
DO4  
Vsup  
DO5  
DO6  
Vsup  
DO7  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
Figure 1. NI 9475 Pin Assignments  
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Each channel of the NI 9475 has a DO pin to which you can  
connect a device. Each channel also has a COM pin and a Vsup pin.  
National Instruments recommends you provide independent COM  
and Vsup wiring for each channel to minimize current flow in the  
COM and Vsup wiring. The COM pins are all connected together  
internally.  
Each channel has an LED that indicates the state of the channel.  
When a channel LED is lit, the channel is on. When the LED is  
dark, the channel is off.  
You must connect an external power supply to the NI 9475. This  
power supply provides the current for the devices you connect to  
the module. Connect the positive lead of the power supply to Vsup  
and the negative lead of the power supply to COM. Refer to the  
Specifications section for information about the power supply  
voltage range.  
Caution Do not remove or insert modules if the external  
power supply connected to the Vsup and COM pins is  
powered on.  
The NI 9475 has current sourcing outputs, meaning the DO pin is  
driven to Vsup when the channel is turned on.  
© National Instruments Corp.  
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You can directly connect the NI 9475 to a variety of industrial  
devices such as solenoids, motors, actuators, relays, and lamps.  
Make sure the devices you connect to the NI 9475 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 connect the common of the device  
to COM. Refer to Figure 2 for an illustration of how to connect a  
device to the NI 9475.  
V
sup  
External  
Power  
Supply  
+
DO  
Device  
COM  
NI 9475  
Figure 2. Connecting a Device to the NI 9475  
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Increasing Current Drive  
Each channel has a continuous output current of 1 A. 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 4 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 1 A rating.  
V
sup  
1 A  
1 A  
DO0  
DO1  
DO2  
DO3  
External  
Power  
Supply  
+
_
1 A  
1 A  
4 A  
COM  
NI 9475  
Figure 3. Increasing the Current to a Device Connected to the NI 9475  
© National Instruments Corp.  
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I/O Protection  
The NI 9475 is short-circuit proof in accordance with IEC 1131-2  
and provides overcurrent protection.  
Understanding Short-Circuit-Proof Devices  
Each channel on the NI 9475 has circuitry that protects it from  
current surges resulting from short circuits. Whether the module  
suffers damage from these overcurrent conditions depends on the  
following factors:  
The amount of current through the channel  
The amount of time the current is above the current limit  
The frequency of the current surges  
When the amount of current through the DO pin is greater than  
13 A, the channel trips and goes into an overcurrent state. In an  
overcurrent state, the channel turns off and the module is not  
damaged. If the current through DO is between 6 A and 13 A, the  
state of the channel is indeterminate and depends on factors such  
as the current level, the temperature, and the power supply.  
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Higher inrush currents that exist for less than the trip time do not  
trip the protection circuitry. Refer to the Specifications section for  
more information about the maximum continuous output current,  
short-circuit behavior, and short-circuit trip time. You also can  
refer to the IEC 1131-2 standard for more information about  
short-circuit-proof devices.  
Tip Because the NI 9475 includes internal flyback  
diodes, you do not need to add external diodes when  
connecting to switching energy storing devices.  
Power Supplies and Overcurrent Conditions  
If a short-circuit occurs, the current through DO can exceed the  
current rating for the power supply and the maximum continuous  
output current for the NI 9475.  
If the power supply you are using with the NI 9475 cannot supply  
more than 13 A, the module may be damaged if a short-circuit  
condition occurs.  
Detecting an Overcurrent Condition  
If a device connected to the module is not working while the  
channel is on, the module channel may be in an overcurrent state.  
Neither the software nor the module LEDs indicate if an  
© National Instruments Corp.  
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overcurrent condition occurs. A channel LED may be on even if the  
channel is off because of an overcurrent condition. To determine if  
the channel is in an overcurrent state, measure the voltage between  
DO and Vsup. If the voltage is equal to the voltage of the external  
power supply connected to the module, the channel is in an  
overcurrent state.  
Resetting Channels After an Overcurrent Condition  
After you have determined and fixed the cause of the overcurrent  
condition, reset the channel by turning it off. For more information  
about writing to output channels, refer to the software help. Visit  
ni.com/info and enter cseriesdoc for information about  
C Series documentation. Alternatively, you can disconnect the  
external power supply from the module. However, doing so  
disconnects power from all of the module channels. Normal  
operation can resume after you correct the overcurrent condition  
and reset the channel.  
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  
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support for 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.  
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..........................8 digital output channels  
Output type .......................................Sourcing  
Power-on output state .......................Channels off  
External power supply  
voltage range (Vsup)...........................0–60 VDC  
© National Instruments Corp.  
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Output impedance (R0) .....................0.14 Ω max  
Continuous output current (I0),  
per channel........................................1 A max  
Output voltage ..................................Vsup – (I0 · R0)  
I/O protection  
Voltage........................................60 VDC max  
Reversed voltage ........................None  
Short-circuit behavior  
Current  
0 to 1 A  
1 to 6 A  
6 to 13 A  
>13 A  
Channel Behavior  
Channel does not trip  
Channel does not trip  
Channel may trip  
Channel trips  
Module Protection  
Module is not damaged  
Module may be damaged  
Module may be damaged  
Module is not damaged  
Short-circuit trip time.................10 μs at 13 A  
Output delay time (full load) ............1 μs max  
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MTBF ...............................................1,096,296 hours at 25 °C;  
Bellcore Issue 6, 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 ...............................355 mW max  
Sleep mode .................................25 μW max  
Thermal dissipation (at 70 °C)  
Active mode ...............................1.5 W max  
Sleep mode .................................25 μW max  
Physical Characteristics  
If you need to clean the module, wipe it with a dry towel.  
Weight...............................................142 g (4.9 oz)  
© National Instruments Corp.  
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Safety  
Maximum Voltage1  
Connect only voltages that are within the following limits.  
Vsup-to-COM.....................................60 VDC,  
Measurement Category I  
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 9475 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.  
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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.  
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Hazardous Locations  
U.S. (UL) ..........................................Class I, Division 2,  
Groups A, B, C, D, T4;  
Class I, Zone 2,  
AEx nA IIC T4  
Canada (C-UL) .................................Class I, Division 2,  
Groups A, B, C, D, T4;  
Class I, Zone 2,  
Ex nA IIC T4  
Europe (DEMKO).............................Ex nA 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  
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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.  
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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.  
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)  
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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.  
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.  
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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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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,  
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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 CD, or ni.com/patents.  
© 2007–2008 National Instruments Corp. All rights reserved.  
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