National Instruments NI-9218 Channel Analogue Input Module
Spesifikasi
- Jeneng produk: NI-9218
- Tipe Konektor: LEMO lan DSUB
- Jinis Pangukuran: Dhukungan sing dibangun kanggo macem-macem jinis
- Eksitasi Sensor: Eksitasi 12V Opsional
Tipe Konektor
NI-9218 duwe luwih saka siji jinis konektor: NI-9218 karo LEMO lan NI-9218 karo DSUB. Kajaba jinis konektor kasebut, NI-9218 nuduhake loro jinis konektor.
NI-9218 Pinout
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] | — | mantan- [2] | — | — | AI+ | AI- 3 | — | — | — |
| lengkap-
Jembatan |
EX+ [2] | — | mantan- [2] | RS+ | RS- | AI+ | AI- | SC | SC | — |
| IEPE | — | AI+ | AI- | — | — | — | — | — | — | — |
| TEDS | — | T+ 4 | T- | — | — | — | — | — | — | T+ 5 |
Katrangan Sinyal
| Sinyal | Katrangan |
| AI+ | Positive analogue input signal connection |
| AI- | Negative analogue input signal connection |
| EX+ | Positive sensor excitation connection |
| mantan- | 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 |
Jinis pangukuran
NI-9218 nyedhiyakake dhukungan kanggo jinis pangukuran ing ngisor iki.
- ± 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.
Tip NI recommends using the NI-9982 screw-terminal adapter when using built-in measurement types on the NI-9218.
NI-9218 nyedhiyakake dhukungan tambahan kanggo jinis pangukuran ing ngisor iki nalika nggunakake adaptor khusus pangukuran.
- ±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 Sambungan
NI-9218 nyedhiyakake eksitasi sensor 12 V opsional. Kanggo nggunakake eksitasi 12 V, sambungake sumber daya 9 VDC nganti 30 VDC menyang Vsup, sambungake terminal eksitasi ing sensor menyang EX+/EX-, lan aktifake eksitasi 12 V ing piranti lunak sampeyan.
Referensi sing gegandhengan:
- NI-9982 ± 16 V Sambungan Pinout
± 65 mV Sambungan
- You must connect AI to EX- on the NI-9218.
- NI-9218 nyedhiyakake eksitasi sensor 12 V opsional. Kanggo nggunakake eksitasi 12 V, sambungake sumber daya 9 VDC nganti 30 VDC menyang Vsup, sambungake terminal eksitasi ing sensor menyang EX+/EX-, lan aktifake eksitasi 12 V ing piranti lunak sampeyan.
Referensi sing gegandhengan
- NI-9982 ± 65 mV Sambungan Pinout
Sambungan Jembatan Lengkap
- 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.
Referensi sing gegandhengan:
- Pinout Sambungan Jembatan Lengkap NI-9982
Sambungan 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.
Referensi sing gegandhengan:
- NI-9982 IEPE Sambungan Pinout
± 20 mA Sambungan
- Connecting ±20 mA signals requires the NI-9983.
- NI-9218 nyedhiyakake eksitasi sensor 12 V opsional. Kanggo nggunakake eksitasi 12 V, sambungake sumber daya 9 VDC nganti 30 VDC menyang Vsup, sambungake terminal eksitasi ing sensor menyang EX+/EX-, lan aktifake eksitasi 12 V ing piranti lunak sampeyan.
Connecting a loop-powered 2-wire or 3-wire transducer requires adding a 20 kΩ resistor between AI- and Ex-.
Referensi sing gegandhengan:
- NI-9983 Pinout
± 60 V Sambungan
Connecting ±60 V signals requires the NI-9987.
Referensi sing gegandhengan:
- NI-9987 Pinout
Sambungan Setengah 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.
Referensi sing gegandhengan:
- NI-9986 Pinout
Sambungan Quarter-Bridge
- Connecting 120 Ω quarter bridges requires the NI-9984.
- Connecting 350 Ω quarter bridges requires the NI-9985.
Tip 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.
Referensi sing gegandhengan:
- NI-9984/9985 Pinout
Sambungan TEDS
For more information about TEDS, visit ni.com/info and enter the Info Code rdteds.
Dhukungan TEDS
- Sensor TEDS Kelas 1 nyedhiyakake antarmuka kanggo nransfer informasi saka sensor. NI-9218 karo LEMO, NI-9218 karo DSUB, NI-9982L, NI-9982D, NI-9982F ndhukung TEDS Kelas 1 sensor.
- 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 Topologi
NI-9218 karo LEMO nyedhiyakake papat pin ing konektor Vsup kanggo chaining daisy.
NI-9218 Pedoman Sambungan
Make sure that the devices you connect to the NI-9218 are compatible with the module specifications.
Pedoman Kabel Kustom
- Mirsani pedoman ing ngisor iki nalika nggunakake adaptor konektor tuwung solder NI-9988 utawa konektor crimp LEMO (784162-01) kanggo nggawe kabel khusus.
- 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.
Diagram Blok NI-9218
- Two 24-bit analogue-to-digital converters (ADCs) simultaneously sample loro saluran AI.
- 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 lan ± 65 mV Kondisi Sinyal
Sinyal input ing saben saluran buffered, kahanan, lan banjur sampdipimpin dening ADC.
Kondisi Sinyal Jembatan Penuh
- 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.
Pengkondisian Sinyal 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 kahanan sinyal
The NI-9983 provides a current shunt for the incoming analogue signal.
± 60 V Sinyal kahanan
The NI-9987 provides an attenuator for the incoming analogue signal.
Kondisi Sinyal Setengah Jembatan
- 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.
Pengkondisian Mode Quarter-Bridge
The NI-9984 and NI-9985 provide a quarter-bridge completion resistor and a half-bridge completion resistor.
Nyaring
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.
NI-9218 makili sinyal ing passband, minangka diukur utamané dening passband ripple lan phase nonlinearity. Kabeh sinyal sing katon ing bandwidth alias-free iku salah siji sinyal unaliased utawa sinyal sing wis disaring dening paling jumlah larangan stopband.
Passband
Sinyal ing passband duwe gain gumantung frekuensi utawa atenuasi. Jumlah cilik saka variasi gain ing babagan frekuensi diarani flatness passband. Filter digital saka NI-9218 nyetel sawetara frekuensi saka passband kanggo cocog tingkat data. Mulane, jumlah gain utawa atenuasi ing frekuensi tartamtu gumantung ing tingkat data.
Stopband
Filter Ngartekno attenuates kabeh sinyal ndhuwur frekuensi stopband. Tujuan utama panyaring yaiku kanggo nyegah aliasing. Mulane, skala frekuensi stopband persis karo tingkat data. Penolakan stopband yaiku jumlah minimal atenuasi sing ditrapake filter kanggo kabeh sinyal kanthi frekuensi ing stopband.
Bandwidth Bebas Alias
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.
Mbukak Adaptor Pangukuran
Apa Apa
- Unlock the measurement adapter housing/cover.
- Slide the measurement adapter housing/cover to access the screw terminals.
Pemasangan NI-998xD/998xL
Apa Gunakake
- NI-998xD or NI-998xL Measurement Adapter
- M4 or Number 8 Screw
- obeng
Apa Apa
Mount the measurement adapter to a flat surface using the mounting hole on the measurement adapter and the screw.
Pengukuran Adaptor Grounding
Terminal lemah ing adaptor pangukuran disambungake menyang lemah sasis nalika adaptor pangukuran disambungake menyang NI-9218 lan NI-9218 dipasang ing sasis.
Pangukuran Adaptor Pinouts
Bagean ing ngisor iki kalebu pinout kanggo adaptor pangukuran NI-9218.
NI-9982 ± 16 V Sambungan Pinout
Pins 3a and 3b are tied together on the NI-9982.
Referensi sing gegandhengan:
- ± 16 V Sambungan
NI-9982 ± 65 mV Sambungan Pinout
Pins 3a and 3b are tied together on the NI-9982.
Referensi sing gegandhengan:
- ± 65 mV Sambungan
Pinout Sambungan Jembatan Lengkap NI-9982
Pins 3a and 3b are tied together on the NI-9982.
Referensi sing gegandhengan:
- Sambungan Jembatan Lengkap
NI-9982 IEPE Sambungan Pinout
Pins 3a and 3b are tied together on the NI-9982.
Referensi sing gegandhengan:
- Sambungan IEPE
NI-9983 Pinout
Pins 3a and 3b are tied together on the NI-9983.
Referensi sing gegandhengan:
- ± 20 mA Sambungan
NI-9984/9985 Pinout
Referensi sing gegandhengan:
- Sambungan Quarter-Bridge
NI-9986 Pinout
Pins 3a and 3b are tied together on the NI-9986.
Referensi sing gegandhengan:
- Sambungan Setengah Bridge
NI-9987 Pinout
Pins 3a and 3b are tied together on the NI-9987.
Referensi sing gegandhengan:
- ± 60 V Sambungan
FAQ
Dokumen / Sumber Daya
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Instrumen Nasional NI-9218 Modul Input Analog Channel [pdf] Instruksi Manual NI-9218 karo LEMO, NI-9218 karo DSUB, NI-9218 Modul Input Analog Saluran, NI-9218, Modul Input Analog Saluran, Modul Input Analog, Modul Input |