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National Instruments NI 9225, Инструкция по эксплуатации и технические характеристики

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NI 9225 Operating Instructions and Specifications

Connecting the NI 9225

The NI 9225 has three 2-terminal detachable screw-terminal 
connectors that provide connections for three simultaneously 

sampled, isolated analog input channels.

Figure 2.  

NI 9225 Terminal Assignments

AI0+
AI0–

AI1+
AI1–

AI2+
AI2–

0
1

0
1

0
1

Содержание NI 9225

Страница 1: ...OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9225 3 Channel 300 Vrms 24 Bit Simultaneous Channel to Channel Isolated Analog Input Module ni com manuals Deutsch Français ...

Страница 2: ...e specific to the NI 9225 The other components in the system might not meet the same safety ratings and specifications Refer to the documentation for each component in the system to determine the safety ratings and specifications for the entire system Related Information Services ni com services NI CompactDAQ NI CompactRIO Documentation ni com info cseriesdoc ni com info softwareversion Chassis Co...

Страница 3: ...to take precautions to avoid electrical shock Caution Do not operate the NI 9242 in a manner not specified in this manual Product misuse can result in a hazard You can compromise the safety protection built into the product if the product is damaged in any way If the product is damaged return it to National Instruments for repair Safety Guidelines for Hazardous Voltages If hazardous voltages are c...

Страница 4: ...d human accessible circuits on the same module Caution Make sure that devices and circuits connected to the module are properly insulated from human contact Caution When module terminals are hazardous voltage LIVE 42 4 Vpk 60 VDC you must ensure that devices and circuits connected to the module are properly insulated from human contact You must use the NI 9971 connector backshell kit to ensure tha...

Страница 5: ...NI 9225 Operating Instructions and Specifications National Instruments 5 Figure 1 shows the NI 9971 connector backshell Figure 1 NI 9971 Connector Backshell ...

Страница 6: ...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 Caution Substitution of components may impair suitability...

Страница 7: ...ch 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 th...

Страница 8: ...ns Connecting the NI 9225 The NI 9225 has three 2 terminal detachable screw terminal connectors that provide connections for three simultaneously sampled isolated analog input channels Figure 2 NI 9225 Terminal Assignments AI0 AI0 AI1 AI1 AI2 AI2 0 1 0 1 0 1 ...

Страница 9: ... terminal If you make a ground referenced connection between the signal source and the NI 9225 make sure the voltage on the AI and AI connections are in the channel to earth safety voltage range to ensure proper operation of the NI 9225 Refer to the Specifications section for more information about operating voltages and overvoltage protection Note You must use 2 wire ferrules to create a secure c...

Страница 10: ...res 3 and 4 for illustrations of how to connect grounded and floating signal sources to the NI 9225 Figure 3 Connecting a Grounded Signal Source to the NI 9225 Figure 4 Connecting a Floating Signal Source to the NI 9225 NI 9225 Signal Source AI AI NI 9225 Signal Source AI AI ...

Страница 11: ...ach channel is conditioned buffered and then sampled by a 24 bit Delta Sigma ADC Each channel provides an independent signal path and ADC enabling you to sample all three channels simultaneously Refer to Figure 5 for an illustration of the circuitry for one channel of the NI 9225 Figure 5 Input Circuitry for One Channel of the NI 9225 NI 9225 AI AI ADC Amplifier Overvoltage Protection Prefilter ...

Страница 12: ...ents recommends that you either use ferrules to terminate wires to the detachable screw terminal connector or use the NI 9971 backshell kit to protect the connections Refer to Figure 6 for an illustration of using ferrules Refer to Figure 1 for an illustration of the NI 9971 connector backshell Figure 6 2 Terminal Detachable Screw Terminal Connector with Ferrule ...

Страница 13: ...gnals within the passband as quantified primarily by passband flatness and phase nonlinearity All signals that appear in the alias free bandwidth are either unaliased signals or signals that have been filtered by at least the amount of the stopband rejection Passband The signals within the passband have frequency dependent gain or attenuation The small amount of variation in gain with respect to f...

Страница 14: ...14 ni com NI 9225 Operating Instructions and Specifications Figure 7 Typical Passband Response of the NI 9225 Frequency Data Rate Hz 0 5 0 4 0 025 0 000 0 025 0 050 0 3 0 2 0 1 0 Gain dB ...

Страница 15: ... free bandwidth of the NI 9225 is not an aliased artifact of signals at a higher frequency The alias free bandwidth is defined by the ability of the filter to reject frequencies above the stopband frequency and equals the data rate minus the stopband frequency Understanding NI 9225 Data Rates The frequency of a master timebase fM controls the data rate fs of the NI 9225 The NI 9225 includes an int...

Страница 16: ... is any integer from 1 to 31 However the data rate must remain within the appropriate data rate range Refer to the Specifications section for more information about the data rate range When using the internal master timebase of 12 8 MHz the result is data rates of 50 kS s 25 kS s 16 667 kS s and so on down to 1 613 kS s depending on the value of n When using an external timebase with a frequency o...

Страница 17: ... 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 Sp...

Страница 18: ... relative to the AI signal on each channel unless otherwise noted Input Characteristics Number of channels 3 analog input channels ADC resolution 24 bits Type of ADC Delta Sigma with analog prefiltering Sampling mode Simultaneous Internal master timebase fM Frequency 12 8 MHz Accuracy 100 ppm max Data rate range fs using internal master timebase Minimum 1 613 kS s Maximum 50 kS s ...

Страница 19: ... ranges2 Minimum 294 Vrms Typical 300 Vrms Typical scaling coefficient 50 66 µV LSB Overvoltage protection 450 VDC Input coupling DC Input impedance AI to AI 1 MΩ 1 The data rate must remain within the appropriate data rate range Refer to the Understanding NI 9225 Data Rates section for more information 2 Refer to the Safety Guidelines section for more information about safe operating voltages fM ...

Страница 20: ... C Post calibration gain match ch to ch 20 kHz 0 25 dB max Measurement Conditions Percent of Reading Gain Error Percent of Range Offset Error Calibrated max 40 to 70 C 0 23 0 05 Calibrated typ 25 C 5 C 0 05 0 008 Calibrated max 25 C 15 C 0 084 0 016 Uncalibrated max 40 to 70 C 1 6 0 66 Uncalibrated typ 25 C 5 C 0 4 0 09 Range equals 425 V ...

Страница 21: ...z Module to module max 0 035 kHz 360 fin fM Phase linearity fs 50 kS s 0 22 max Input delay 40 fs 3 6 µs Passband Frequency 0 453 fs Flatness fs 50 kS s 100 mdB max Stopband Frequency 0 547 fs Rejection 100 dB Alias free bandwidth 0 453 fs 3 dB bandwidth fs 50 kS s 24 56 kHz CMRR fin 60 Hz 104 dB SFDR 1 kHz 60 dBFS 128 dBFS 5 512 ...

Страница 22: ...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 Power Requirements Power consumption from chassis Active mode 495 mW max Sleep mode 25 µW max Thermal dissipation at 70 C Active mode 760 mW max Sleep mode 265 mW max ...

Страница 23: ...ith a dry towel Screw terminal wiring 16 to 28 AWG copper conductor wire with 7 mm 0 28 in of insulation stripped from the end Torque for screw terminals 0 22 to 0 25 N m 1 95 to 2 21 lb in Ferrules 0 25 mm2 to 0 5 mm2 Weight 141 g 5 0 oz Safety Maximum Voltage Connect only voltages that are within the following limits AI to AI 300 Vrms max ...

Страница 24: ... Category II Withstand 2 300 Vrms verified by a 5 s dielectric withstand test 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 9225 to signals...

Страница 25: ...aboratory 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 for the module number or product line and click the appropriate link in the Certification column 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 ...

Страница 26: ...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 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 Deg...

Страница 27: ... 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 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 Industr...

Страница 28: ...rective EMC 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 NI is committed to designing and manufacturing products in an environmentally respon...

Страница 29: ...trical and Electronic Equipment WEEE EU Customers At the end of the product life cycle all products must be sent to a WEEE recycling center For more information about WEEE recycling centers National Instruments WEEE initiatives and compliance with WEEE Directive 2002 96 EC on Waste and Electronic Equipment visit ni com environment weee ᄤֵᙃѻક ᶧ ࠊㅵ ࡲ Ё RoHS Ё ᅶ National Instruments ヺড়Ё ᄤֵᙃ ѻકЁ䰤ࠊՓ ᶤѯ...

Страница 30: ...n development self help resources to email and phone assistance from NI Application Engineers Visit ni com services for NI Factory Installation Services repairs extended warranty and other services Visit ni com register to register your National Instruments product Product registration facilitates technical support and ensures that you receive important information updates from NI A Declaration of...

Страница 31: ...ate headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world For telephone support in the United States create your service request at ni com support or dial 1 866 ASK MYNI 275 6964 For telephone support outside the United States visit the Worldwide Offices section of ni com niglobal to access the branch office w...

Страница 32: ...ents You can find information about end user license agreements EULAs and third party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal export compliance for the National Instruments global trade compliance policy and how to obtain relevant HTS codes ECCNs and other import export data NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ...

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