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Summary of Contents for National Instruments NI 9481
- Page 1 OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9481 4-Channel SPST Electromechanical Relay Module Français Deutsch ni.com/manuals...
- Page 2 This document describes how to use the National Instruments 9481 and includes specifications and terminal assignments for the NI 9481. Visit ni.com/info which software you need for the modules you are using. For information about installing, configuring, and programming the system, refer to the system documentation.
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Page 3: Safety Guidelines For Hazardous Voltages
Safety Guidelines Operate the NI 9481 only as described in these operating instructions. Hot Surface hot. Touching this component may result in bodily injury. Safety Guidelines for Hazardous Voltages If hazardous voltages are connected to the module, take the following precautions. A hazardous voltage is a voltage greater than 42.4 V... - Page 4 You must use the NI 9932 connector backshell kit to ensure that the terminals are not accessible. Figure 1 shows the NI 9932 connector backshell. Figure 1. NI 9932 Connector Backshell NI 9481 Operating Instructions and Specifications /60 VDC), you must ensure that devices ni.com...
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Page 5: Safety Guidelines For Hazardous Locations
Safety Guidelines for Hazardous Locations The NI 9481 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 hazardous locations; and nonhazardous locations only. Follow these guidelines if you are installing the NI 9481 in a potentially explosive environment. - Page 6 Power supply and module cables must be separated on opposite sides of the enclosure and must enter and exit through opposing enclosure walls. NI 9481 Operating Instructions and Specifications and search for the LR certificate, or ni.com...
- Page 7 Connecting the NI 9481 The NI 9481 has a 10-terminal detachable screw-terminal connector that provides connections for 4 electromechanical relay channels. Figure 2. NI 9481 Terminal Assignments © National Instruments Corp. CH0a CH0b CH1a CH1b CH2a CH2b CH3a CH3b NI 9481 Operating Instructions and Specifications...
- Page 8 Refer to the information about sleep mode. When connecting a load to the NI 9481, 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.
- Page 9 Wiring for High-Vibration Applications If an application is subject to high vibration, National Instruments recommends that you either use ferrules to terminate wires to the detachable screw-terminal connector or use the NI 9932 backshell kit to protect the connections.
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Page 10: Sleep Mode
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 and enter for information about ni.com/info cseriesdoc C Series documentation. NI 9481 Operating Instructions and Specifications ni.com... -
Page 11: Specifications
The following specifications are typical for the range –40 to 70 °C unless otherwise noted. Output Characteristics Number of channels... 4 electromechanical relay Relay type ... Single pole single throw Power-on output state ... Channels off © National Instruments Corp. channels (SPST) NI 9481 Operating Instructions and Specifications... - Page 12 Off state leakage ... 10 μA max Life expectancy Mechanical (no load)... 20,000,000 operations Electrical (connecting to load) ... 100,000 operations NI 9481 Operating Instructions and Specifications 1 A max at 60 VDC, 4 A max at 250 V 1 A max at 60 VDC, 2 A max at 250 V ni.com...
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Page 13: Power Requirements
Sleep mode ... 5 mW max Thermal dissipation (at 70 °C) Active mode ... 1.5 W max Sleep mode ... 5 mW max © National Instruments Corp. Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method NI 9481 Operating Instructions and Specifications... -
Page 14: Physical Characteristics
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 NI 9481 Operating Instructions and Specifications conductor wire with 10 mm (0.39 in.) of insulation stripped from the end (4.4 to 5.3 lb ·... -
Page 15: Hazardous Locations
115 V for U.S. or 230 V for Europe. Do not connect the NI 9481 to signals or use Caution for measurements within Measurement Categories III or IV. Isolation Channel-to-channel Continuous ... 250 V Withstand ... -
Page 16: Electromagnetic Compatibility
EN 55011 (CISPR 11): Group 1, Class A emissions • AS/NZS CISPR 11: Group 1, Class A emissions • FCC 47 CFR Part 15B: Class A emissions • ICES-001: Class A emissions NI 9481 Operating Instructions and Specifications Online Product Certification section. ni.com... -
Page 17: Online Product Certification
To obtain product certifications and the DoC for this product, visit , search by module number or product line, and certification click the appropriate link in the Certification column. © National Instruments Corp. ni.com/ NI 9481 Operating Instructions and Specifications... -
Page 18: Shock And Vibration
(IEC 60068-2-6) ... 5 g, 40 to 500 Hz; 0.062 in. 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. -
Page 19: Environmental Management
Environment Web page at contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document. © National Instruments Corp. noncondensing noncondensing ni.com/environment NI 9481 Operating Instructions and Specifications . This page... - Page 20 WEEE recycling centers and National Instruments WEEE initiatives, visit environment/weee National Instruments ni.com/environment/rohs_china about China RoHS compliance, go to environment/rohs_china NI 9481 Operating Instructions and Specifications At the end of the life cycle, all products National Instruments RoHS ni.com/ RoHS (RoHS) (For information ni.com/...
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Page 21: Where To Go For Support
Where to Go for Support The National Instruments Web site is your complete resource for technical support. At you have access to ni.com/support everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers. - Page 22 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 NI 9481 Operating Instructions and Specifications ni.com...
- Page 23 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.
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