Page 2 - Note
NI 9481 Operating Instructions and Specifications 2 ni.com This doc u ment describes how to u se the National Instr u ments 9481 and incl u des specifications and terminal assignments for the NI 9481. Visit ni.com/info and enter rd s oftwarever s ion to determine which software yo u need for the mod...
Page 3 - Safety Guidelines; Hot Surface; Safety Guidelines for Hazardous Voltages; not; Caution
© National Instruments Corp. 3 NI 9481 Operating Instructions and Specifications Safety Guidelines Operate the NI 9481 only as described in these operating instr u ctions. Hot Surface This icon denotes that the component may be hot. To u ching this component may res u lt in bodily inj u ry. Safety G...
Page 5 - Safety Guidelines for Hazardous Locations
© National Instruments Corp. 5 NI 9481 Operating Instructions and Specifications Safety Guidelines for Hazardous Locations The NI 9481 is s u itable for u se in Class I, Division 2, Gro u ps A, B, C, D, T4 hazardo u s locations; Class I, Zone 2, AEx nC IIC T4 hazardo u s locations; and nonhazardo u ...
Page 6 - Special Conditions for Marine Applications
NI 9481 Operating Instructions and Specifications 6 ni.com Special Conditions for Marine Applications Some mod u les 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 th...
Page 8 - Sleep Mode; CH
NI 9481 Operating Instructions and Specifications 8 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...
Page 9 - Wiring for High-Vibration Applications
© National Instruments Corp. 9 NI 9481 Operating Instructions and Specifications Note Yo u m u st u se 2-wire ferr u les to create a sec u re connection when connecting more than one wire to a single terminal on the NI 9481. When the channel is t u rned on, the terminal connected to the load drives ...
Page 11 - Specifications; Output Characteristics
© National Instruments Corp. 11 NI 9481 Operating Instructions and Specifications Typically, when a system is in sleep mode, yo u cannot comm u nicate with the mod u les. In sleep mode, the system cons u mes minimal power and may dissipate less heat than it does in normal mode. Refer to the Specific...
Page 12 - max; Relay bo
NI 9481 Operating Instructions and Specifications 12 ni.com Switching capacity (resistive load) Switching voltage ....................... 60 VDC max, 250 V rms max Switching c u rrent, per channel One channel on .................... 4 A max at 30 VDC, 1 A max at 60 VDC,4 A max at 250 V rms All chann...
Page 13 - Bellcore Iss; Contact NI for Bellcore MTBF specifications; Power Requirements; Power cons
© National Instruments Corp. 13 NI 9481 Operating Instructions and Specifications MTBF ............................................... 460,321 ho u rs at 25 °C; Bellcore Iss u e 2, Method 1, Case 3, Limited Part Stress Method Note Contact NI for Bellcore MTBF specifications at other temperat u res o...
Page 14 - Physical Characteristics; Safety Voltages
NI 9481 Operating Instructions and Specifications 14 ni.com Physical Characteristics If yo u need to clean the mod u le, wipe it with a dry towel. Screw-terminal wiring ...................... 12 to 24 AWG copper cond u ctor wire with 10 mm (0.39 in.) of ins u lation stripped from the end Torq u e fo...
Page 15 - Hazardous Locations
© National Instruments Corp. 15 NI 9481 Operating Instructions and Specifications that provided by a standard wall o u tlet, for example, 115 V for U.S. or 230 V for E u rope. Caution Do not connect the NI 9481 to signals or u se for meas u rements within Meas u rement Categories III or IV. Isolatio...
Page 16 - Safety Standards; Online Product Certification; Electromagnetic Compatibility
NI 9481 Operating Instructions and Specifications 16 ni.com Safety Standards This prod u ct meets the req u irements of the following standards of safety for electrical eq u ipment for meas u rement, control, and laboratory u se: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 Note For UL and ot...
Page 17 - CE Compliance
© National Instruments Corp. 17 NI 9481 Operating Instructions and Specifications Note For the standards applied to assess the EMC of this prod u ct, refer to the Online Product Certification section. Note For EMC compliance, operate this device with shielded cabling. CE Compliance This prod u ct me...
Page 18 - Shock and Vibration
NI 9481 Operating Instructions and Specifications 18 ni.com Shock and Vibration To meet these specifications, yo u m u st panel mo u nt the system and either affix ferr u les to the ends of the terminal wires or u se the NI 9932 backshell kit to protect the connections. Operating vibration,sin u soi...
Page 19 - Environmental Management; NI and the
© National Instruments Corp. 19 NI 9481 Operating Instructions and Specifications Operating h u midity (IEC 60068-2-56).............................. 10 to 90% RH, noncondensing Storage h u midity (IEC 60068-2-56).............................. 5 to 95% RH, noncondensing Maxim u m altit u de............
Page 20 - Waste Electrical and Electronic Equipment (WEEE); EU Customers; must; RoHS; National Instruments; about China RoHS compliance, go to
NI 9481 Operating Instructions and Specifications 20 ni.com Waste Electrical and Electronic Equipment (WEEE) EU Customers At the end of the life cycle, all prod u cts must be sent to a WEEE recycling center. For more information abo u t WEEE recycling centers and National Instr u ments WEEE initiati...
Page 21 - Where to Go for Support
© National Instruments Corp. 21 NI 9481 Operating Instructions and Specifications Where to Go for Support The National Instr u ments Web site is yo u r complete reso u rce for technical s u pport. At ni.com/ s upport yo u have access to everything from tro u bleshooting and application development s...
