National Instruments NI-9218 Channel Analogue Input Module
fepetra arahana
- Anaran'ny vokatra: NI-9218
- Karazana mpampitohy: LEMO sy DSUB
- Karazana fandrefesana: Fanohanana naorina ho an'ny karazana isan-karazany
- Fanentanana sensor: 12V fientanam-po azo atao
Karazana mpampitohy
Ny NI-9218 dia manana karazana mpampitohy mihoatra ny iray: NI-9218 miaraka amin'ny LEMO ary NI-9218 miaraka amin'ny DSUB. Raha tsy voafaritra ny karazana mpampitohy, ny NI-9218 dia manondro ireo karazana mpampitohy roa.
Takelaka data NI-9218
Signals by Measurement Type
| Mode | Pin
1 |
|||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| ±16 V | EX+ | — | AI-, EX- | — | — | AI+ | — | — | — | — |
| ±65 mV | EX+ 2 [2] | — | fi- [2] | — | — | AI+ | AI- 3 | — | — | — |
| feno-
Tetezana |
EX+ [2] | — | fi- [2] | RS+ | RS- | AI+ | AI- | SC | SC | — |
| IEPE | — | AI+ | AI- | — | — | — | — | — | — | — |
| TEDS | — | T+ 4 | T- | — | — | — | — | — | — | T+ 5 |
Famariparitana famantarana
| famantarana | Description |
| AI+ | Positive analogue input signal connection |
| AI- | Negative analogue input signal connection |
| EX+ | Positive sensor excitation connection |
| fi- | Negative sensor excitation connection |
| RS+ | Positive remote sensing connection |
| RS- | Negative remote sensing connection |
| SC | Shunt calibration connection |
| T+ | TEDS data connection |
| T- | TEDS return connection |
Karazana fandrefesana
Ny NI-9218 dia manome fanohanana naorina ho an'ireto karazana fandrefesana manaraka ireto.
- ±16 V
- ±65 mV
- Full-Bridge
- IEPE
- NI-9218 with LEMO only.
- Optional sensor excitation.
- Tie to pin 3.
- TEDS Class 1 data connection.
- TEDS Class 2 data connection.
Soso-kevitra NI recommends using the NI-9982 screw-terminal adapter when using built-in measurement types on the NI-9218.
Ny NI-9218 dia manome fanohanana fanampiny ho an'ireto karazana fandrefesana manaraka ireto rehefa mampiasa adaptatera fandrefesana manokana.
- ±20 mA, requires the NI-9983
- ±60 V, requires the NI-9987
- Half-Bridge requires the NI-9986
- Quarter-Bridge requires the NI-9984 (120 Ω) or NI-9985 (350 Ω)
± 16 V Fifandraisana
Ny NI-9218 dia manome 12 V sensor excitation. Raha hampiasa ny fientanam-po 12 V dia ampifandraiso amin'ny Vsup ny famatsiana herinaratra 9 VDC hatramin'ny 30 VDC, ampifandraiso amin'ny EX+/EX- ny terminal fientanentanana eo amin'ny sensor-nao, ary avelao ny fientanam-po 12 V ao amin'ny rindrambaikonao.
Reference mifandraika:
- NI-9982 ± 16 V Connection Pinout
± 65 mV Fifandraisana
- You must connect AI to EX- on the NI-9218.
- Ny NI-9218 dia manome 12 V sensor excitation. Raha hampiasa ny fientanam-po 12 V dia ampifandraiso amin'ny Vsup ny famatsiana herinaratra 9 VDC hatramin'ny 30 VDC, ampifandraiso amin'ny EX+/EX- ny terminal fientanentanana eo amin'ny sensor-nao, ary avelao ny fientanam-po 12 V ao amin'ny rindrambaikonao.
Related reference
- NI-9982 ± 65 mV Connection Pinout
Fifandraisana feno tetezana
- The NI-9218 provides 2 V excitation to loads ≥120 Ω or 3.3 V excitation to loads ≥350 Ω.
- The NI-9218 provides optional connections for remote sensing (RS) and shunt calibration (SC). Remote sensing corrects for errors in excitation leads, and shunt calibration corrects for errors caused by resistance within one leg of the bridge.
Reference mifandraika:
- NI-9982 Full-Bridge Connection Pinout
Ireo singa mifandraika amin'ny IEPE
- The NI-9218 provides an excitation current for each channel that powers IEPE sensors.
- AI+ provides DC excitation, and AI- provides the excitation return path.
Reference mifandraika:
- NI-9982 IEPE Connection Pinout
± 20 mA Fifandraisana
- Connecting ±20 mA signals requires the NI-9983.
- Ny NI-9218 dia manome 12 V sensor excitation. Raha hampiasa ny fientanam-po 12 V dia ampifandraiso amin'ny Vsup ny famatsiana herinaratra 9 VDC hatramin'ny 30 VDC, ampifandraiso amin'ny EX+/EX- ny terminal fientanentanana eo amin'ny sensor-nao, ary avelao ny fientanam-po 12 V ao amin'ny rindrambaikonao.
Connecting a loop-powered 2-wire or 3-wire transducer requires adding a 20 kΩ resistor between AI- and Ex-.
Reference mifandraika:
- Takelaka data NI-9983
± 60 V Fifandraisana
Connecting ±60 V signals requires the NI-9987.
Reference mifandraika:
- Takelaka data NI-9987
Fifandraisana Half-Bridge
- Connecting half bridges requires the NI-9986.
- The NI-9218 provides 2 V excitation to half bridges of ≥240 Ω total or 3.3 V excitation to half bridges of ≥700 Ω total.
- The NI-9218 provides optional connections for remote sensing (RS) and shunt calibration (SC). Remote sensing corrects for errors in excitation leads, and shunt calibration corrects for errors caused by resistance within one leg of the bridge.
Reference mifandraika:
- Takelaka data NI-9986
Fifandraisana Quarter-Bridge
- Connecting 120 Ω quarter bridges requires the NI-9984.
- Connecting 350 Ω quarter bridges requires the NI-9985.
Soso-kevitra NI-recommends 2 V excitation when using a NI-9984 with 120 Ω quarter bridges and 3.3 V excitation when using the NI-9985 with 350 Ω quarter bridges.
Reference mifandraika:
- NI-9984/9985 Pinout
Fifandraisana TEDS
For more information about TEDS, visit ni.com/info and enter the Info Code rdteds.
Fanohanana TEDS
- Ny sensor TEDS Class 1 dia manome interface tsara amin'ny famindrana fampahalalana avy amin'ny sensor. Ny NI-9218 miaraka amin'ny LEMO, NI-9218 miaraka amin'ny DSUB, NI-9982L, NI-9982D, NI-9982F dia manohana ireo sensor TEDS Class 1.
- TEDS Class 2 sensors provide an interface for transferring information from TEDS-enabled sensors. The NI-9218 with LEMO, NI-9982L, NI-9983L, NI-9984L, NI-9985L, and NI-9986L support TEDS Class 2 sensors.
Vsup Daisy Chain Topology
Ny NI-9218 miaraka amin'ny LEMO dia manome tsimatra efatra amin'ny mpampitohy Vsup ho an'ny rojo daisy.
NI-9218 Torolàlana momba ny fifandraisana
Make sure that the devices you connect to the NI-9218 are compatible with the module specifications.
Torolàlana tariby manokana
- Tandremo ireto torolàlana manaraka ireto rehefa mampiasa adaptatera mpampitohy kaopy solder NI-9988 na mpampitohy crimp LEMO (784162-01) hamorona tariby mahazatra.
- Use a shielded cable for all signals.
- Connect the cable shield to the earth ground.
- Use twisted-pair wiring for the AI+/AI- and RS+/RS- signals to achieve specified EMC performance.
Sary sakana NI-9218
- Two 24-bit analogue-to-digital converters (ADCs) simultaneously sample samy AI channel.
- The NI-9218 provides channel-to-channel isolation.
- The NI-9218 reconfigures the signal conditioning for each measurement type.
- The NI-9218 provides excitation for IEPE and bridge completion measurement types.
- The NI-9218 can provide optional 12 V sensor excitation for ±16 V, ±65 mV, and ±20 mA measurement types.
± 16 V sy ± 65 mV Famantarana famantarana
Ny famantarana fampidirana ao amin'ny fantsona tsirairay dia amboarina, voafantina, ary avy eo samptarihin'ny ADC.
Fanamafisana famantarana ny tetezana feno
- The analogue input connections sense and then amplify the incoming analogue signal.
- The excitation connections provide differential bridge-excitation voltage.
- Remote sensing continuously and automatically corrects for lead-wire induced excitation voltage loss when using the RS connections.
- Shunt calibration can be used to correct for lead-wire-induced desensitisation of the bridge.
Fanamafisana famantarana IEPE
- The incoming analogue signal is referenced to an isolated ground.
- Each channel is configured for AC coupling with an IEPE current.
- Each channel provides a TEDS Class 1 interface.
± 20 mA Famantarana famantarana
The NI-9983 provides a current shunt for the incoming analogue signal.
± 60 V Famantarana famantarana
The NI-9987 provides an attenuator for the incoming analogue signal.
Fanamafisana famantarana Half-Bridge
- The NI-9886 provides half-bridge completion resistors for the incoming analogue signal.
- You must connect AI+, EX+, and EX-.
- RS+ and RS- connections are optional.
- You do not need to connect the AI signal because it is connected internally.
Toeram-pivoriana Quarter-Bridge
The NI-9984 and NI-9985 provide a quarter-bridge completion resistor and a half-bridge completion resistor.
fanasivanana
The NI-9218 uses a combination of analogue and digital filtering to provide an accurate representation of in-band signals while rejecting out-of-band signals. The filters discriminate between signals based on the frequency range, or bandwidth, of the signal. The three important bandwidths to consider are the passband, the stopband, and the alias-free bandwidth.
Ny NI-9218 dia maneho famantarana ao anatin'ny passband, araka ny famaritana voalohany indrindra amin'ny alàlan'ny ripple passband sy ny tsy fitoviana amin'ny dingana. Ny famantarana rehetra izay miseho ao amin'ny bandebande tsy misy alias-maimaim-poana dia na famantarana tsy fantatra na famantarana izay voasivan'ny farafaharatsiny ny habetsahan'ny fandavana stopband.
Passband
Ny famantarana ao anatin'ny passband dia manana tombony na fanerena miankina matetika. Ny habetsan'ny fiovaovana amin'ny tombony mifandraika amin'ny fatrany dia antsoina hoe fisaka passband. Ny sivana nomerika an'ny NI-9218 dia manitsy ny haavon'ny fatran'ny passband mba hifanaraka amin'ny tahan'ny data. Noho izany, miankina amin'ny tahan'ny angon-drakitra ny habetsaky ny tombony na ny attenuation amin'ny matetika.
Stopband
Ny sivana dia manalefaka ny famantarana rehetra mihoatra ny fatran'ny stopband. Ny tanjona voalohany amin'ny sivana dia ny hisorohana ny aliasing. Noho izany, ny refin'ny stopband dia mifandanja tsara amin'ny tahan'ny data. Ny fandavana stopband dia ny habetsan'ny attenuation faran'izay kely indrindra ampiharin'ny sivana amin'ny famantarana rehetra misy matetika ao anatin'ny bandy.
Alias-Free Bandwidth
Any signal that appears in the alias-free bandwidth of the NI-9218 is not an aliased artefact 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 it is equal to the data rate minus the stopband frequency.
Manokatra Adapter fandrefesana
Ny hatao
- Unlock the measurement adapter housing/cover.
- Slide the measurement adapter housing/cover to access the screw terminals.
Fametrahana ny NI-998xD/998xL
Inona no ampiasaina
- NI-998xD or NI-998xL Measurement Adapter
- M4 or Number 8 Screw
- Screwdriver
Ny hatao
Mount the measurement adapter to a flat surface using the mounting hole on the measurement adapter and the screw.
Fandrefesana Adapter Grounding
Ny terminal-tany amin'ny adaptatera fandrefesana dia mifandray amin'ny tany chassis rehefa mifandray amin'ny NI-9218 ny adaptatera fandrefesana ary napetraka ao anaty chassis ny NI-9218.
Fandrefesana Adapter Pinouts
Ny fizarana manaraka dia misy pinouts ho an'ny adaptatera fandrefesana NI-9218.
NI-9982 ± 16 V Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Reference mifandraika:
- ± 16 V Fifandraisana
NI-9982 ± 65 mV Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Reference mifandraika:
- ± 65 mV Fifandraisana
NI-9982 Full-Bridge Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Reference mifandraika:
- Fifandraisana feno tetezana
NI-9982 IEPE Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Reference mifandraika:
- Ireo singa mifandraika amin'ny IEPE
Takelaka data NI-9983
Pins 3a and 3b are tied together on the NI-9983.
Reference mifandraika:
- ± 20 mA Fifandraisana
NI-9984/9985 Pinout
Reference mifandraika:
- Fifandraisana Quarter-Bridge
Takelaka data NI-9986
Pins 3a and 3b are tied together on the NI-9986.
Reference mifandraika:
- Fifandraisana Half-Bridge
Takelaka data NI-9987
Pins 3a and 3b are tied together on the NI-9987.
Reference mifandraika:
- ± 60 V Fifandraisana
FAQ
Documents / Loharano
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National Instruments NI-9218 Channel Analog Input Module [pdf] Boky torolalana NI-9218 miaraka amin'ny LEMO, NI-9218 miaraka amin'ny DSUB, NI-9218 Channel Analog Input Module, NI-9218, Channel Analog Input Module, Analog Input Module, Input Module |