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NI 9481E Operating Instructions and Specifications

6

ni.com

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.

Summary of Contents for NI 9481E

Page 1: ...OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9481E 4 Channel SPST Electromechanical Relay Module...

Page 2: ...For information about installing configuring and programming the system refer to the system documentation Visit ni com info and enter cseriesdoc for information about C Series documentation Caution N...

Page 3: ...481E Operating Instructions and Specifications NI 9481E Dimensions The following figure shows the dimensions of the NI 9481E Figure 1 NI 9481E Dimensions in Millimeters Inches 73 4 2 89 0 0 0 00 26 7...

Page 4: ...ecting the NI 9481E The NI 9481E has a 10 terminal detachable screw terminal connector that provides connections for four electromechanical relay channels Figure 2 NI 9481E Terminal Assignments CH0a C...

Page 5: ...s 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...

Page 6: ...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 slee...

Page 7: ...aracteristics 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 V...

Page 8: ...perate time 10 ms max Relay bounce time 3 ms Off state leakage 10 A max Life expectancy Mechanical no load 20 000 000 operations Electrical connecting to load 100 000 operations MTBF 460 321 hours at...

Page 9: ...on 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...

Page 10: ...s 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...

Page 11: ...ntrol 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 Produ...

Page 12: ...osure 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 600...

Page 13: ...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 w...

Page 14: ...ngineers 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 y...

Page 15: ...4 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 Net...

Page 16: ...i 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...

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