National Instruments Network Card NI 9481E User Manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS  
NI 9481E  
4-Channel SPST Electromechanical Relay Module  
 
NI 9481E Dimensions  
The following figure shows the dimensions of the NI 9481E.  
73.4 (2.89)  
0.0 (0.00)  
Figure 1. NI 9481E Dimensions in Millimeters (Inches)  
© National Instruments Corp.  
3
NI 9481E Operating Instructions and Specifications  
 
Connecting the NI 9481E  
The NI 9481E has a 10-terminal detachable screw-terminal  
connector that provides connections for four electromechanical  
relay channels.  
3
0
CH0a  
CH0b  
CH1a  
CH1b  
CH2a  
CH2b  
CH3a  
CH3b  
NC  
0
1
2
3
4
5
6
7
8
9
NC  
Figure 2. NI 9481E Terminal Assignments  
NI 9481E Operating Instructions and Specifications  
4
ni.com  
 
Each electromechanical relay channel has two interchangeable  
terminals, CHa and CHb.  
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. The LEDs are disabled when the chassis is  
in sleep mode. Refer to the Sleep Mode section for more  
information about sleep mode.  
When connecting a load to the NI 9481E, connect the positive lead  
of the load to either the CHa or the CHb terminal, and the ground  
of the load to one of the leads of the power supply. Connect the  
remaining CHa or CHb terminal to the other lead of the power  
supply. Figure 3 shows a possible configuration.  
CHa  
+
or  
Load  
AC  
CHb  
NI 9481E  
Figure 3. Connecting a Load to the NI 9481E  
© National Instruments Corp.  
5
NI 9481E Operating Instructions and Specifications  
 
 
Note You must use 2-wire ferrules to create a secure  
connection when connecting more than one wire to a  
single terminal on the NI 9481E.  
When the channel is turned on, the terminal connected to the load  
drives current or applies voltage to the load. When the channel is  
off, the terminal does not drive current or apply voltage to the load.  
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 9481E Operating Instructions and Specifications  
6
ni.com  
 
 
Specifications  
The following specifications are typical for the range –40 to 85 °C  
unless otherwise noted.  
Output Characteristics  
Number of channels..........................4 electromechanical relay  
channels  
Relay type.........................................Single pole single throw  
(SPST)  
Power-on output state .......................Channels off  
Switching capacity (resistive load)  
Switching voltage.......................60 VDC max, 250 Vrms max  
Switching current, per channel  
One channel on ....................4 A max at 30 VDC,  
1 A max at 60 VDC,  
4 A max at 250 Vrms  
All channels on ....................2 A max at 30 VDC,  
1 A max at 60 VDC,  
2 A max at 250 Vrms  
© National Instruments Corp.  
7
NI 9481E Operating Instructions and Specifications  
 
 
Resistance per channel,  
channel on.........................................50 mΩ  
Switching rate...................................1 operation per second  
Relay release time.............................5 ms max  
Relay operate time............................10 ms max  
Relay bounce time ............................3 ms  
Off state leakage ...............................10 μA max  
Life expectancy  
Mechanical (no load)..................20,000,000 operations  
Electrical (connecting to load) ...100,000 operations  
MTBF ...............................................460,321 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.  
NI 9481E Operating Instructions and Specifications  
8
ni.com  
 
Power Requirements  
Power consumption from chassis  
Active mode ...............................580 mW max  
Sleep mode .................................5 mW max  
Thermal dissipation (at 70 °C)  
Active mode ...............................1.5 W max  
Sleep mode .................................5 mW max  
Physical Characteristics  
Use a dry, low-velocity stream of air to clean the module. If  
needed, use a soft-bristle brush for cleaning around components.  
Screw-terminal wiring ......................12 to 24 AWG copper  
conductor wire with 10 mm  
(0.39 in.) of insulation  
stripped from the end  
Torque for screw terminals ...............0.5 to 0.6 N · m  
(4.4 to 5.3 lb · in.)  
Weight...............................................76 g (2.7 oz)  
© National Instruments Corp.  
9
NI 9481E Operating Instructions and Specifications  
 
Safety  
Safety Voltages  
Connect only voltages that are within the following limits.  
CHa-to-CHb......................................250 Vrms max,  
Measurement Category II  
Measurement Category II is for measurements performed on  
circuits directly connected to the electrical distribution system.  
This category refers to local-level electrical distribution, such as  
that provided by a standard wall outlet, for example, 115 V for U.S.  
or 230 V for Europe.  
Caution Do not connect the NI 9481E to signals or use  
for measurements within Measurement Categories III  
or IV.  
Isolation  
Channel-to-channel  
Continuous...........................250 Vrms  
(Basic insulation)  
Withstand .............................1,400 Vrms, verified by a 5 s  
dielectric withstand test  
NI 9481E Operating Instructions and Specifications 10  
ni.com  
 
Channel-to-earth ground  
Continuous...........................250 Vrms  
(Double insulation)  
Withstand .............................2,300 Vrms, verified by a 5 s  
dielectric withstand test  
Safety Standards  
This product meets the requirements of the following standards of  
safety for electrical equipment for measurement, control, and  
laboratory use when installed in a suitable enclosure:  
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 the Online Product Certification section.  
Online Product Certification  
Refer to the product Declaration of Conformity (DoC) for  
additional regulatory compliance information. To obtain product  
certifications and 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.  
© National Instruments Corp.  
11 NI 9481E Operating Instructions and Specifications  
 
 
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 85 °C  
Storage temperature  
(IEC 60068-2-1, IEC 60068-2-2) .....40 to 85 °C  
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  
NI 9481E Operating Instructions and Specifications 12  
ni.com  
 
Environmental Management  
NI is committed to designing and manufacturing products in an  
environmentally responsible manner. NI recognizes that  
eliminating certain hazardous substances from our products is  
beneficial to the environment and 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.  
Waste Electrical and Electronic Equipment (WEEE)  
EU Customers At the end of the 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.  
© National Instruments Corp.  
13 NI 9481E Operating Instructions and Specifications  
 
⬉ᄤֵᙃѻક∵ᶧ᥻
ㅵ⧚
⊩ ˄Ё೑  
˅
RoHS  
ヺড়Ё೑⬉ᄤֵᙃ  
Ё೑ᅶ᠋  
National Instruments  
ѻકЁ䰤
Փ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ  
DŽ݇Ѣ  
(RoHS)  
Ё೑  
ড়㾘ᗻֵᙃˈ䇋ⱏᔩ  
RoHS  
National Instruments  
ni.com/environment/rohs_chinaDŽ  
about China RoHS compliance, go to  
environment/rohs_china  
(For information  
ni.com/  
.)  
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  
NI 9481E Operating Instructions and Specifications 14  
ni.com  
 
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 413091, Japan 81 3 5472 2970,  
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 Corp.  
15 NI 9481E Operating Instructions and Specifications  
 
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/technology, refer to the appropriate location: Help»Patents in  
your software, the patents.txt file on your media, or the National Instruments Patent Notice at  
ni.com/patents.  
© 2008 National Instruments Corp. All rights reserved.  
372621A-01  
Aug08  
 

Miele Coffeemaker CVA5065 User Manual
Miele Refrigerator K 12020 S User Manual
Murphy Home Security System SAH User Manual
Nilfisk Advance America Vacuum Cleaner SW 700S P User Manual
Olympus Camera Accessories PT 036 User Manual
Olympus MP3 Player BZ8182 03 User Manual
Palm PDAs Smartphones 405 5566A US User Manual
Panasonic Air Conditioner CS S12NKUW 1 User Manual
Panasonic Home Security System KX HNC600 User Manual
Panasonic Personal Computer CT T2 User Manual