National Instruments NI-9218 Channel Analogue Input Module
Espesifikasyon
- Non pwodwi: NI-9218
- Kalite konektè: LEMO ak DSUB
- Kalite Mezi: Sipò entegre pou divès kalite
- Eksitasyon Capteur: Eksitasyon 12V opsyonèl
Kalite Connector
NI-9218 la gen plis pase yon kalite konektè: NI-9218 ak LEMO epi NI-9218 ak DSUB. Sof si yo espesifye kalite konektè a, NI-9218 la refere a tou de kalite konektè yo.
Brochaj NI-9218
Signals by Measurement Type
| Mode | PIN
1 |
|||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| ± 16 V | EX+ | — | IA-, EKS- | — | — | AI+ | — | — | — | — |
| ± 65 mV | EX+ 2 [2] | — | EX- [2] | — | — | AI+ | AI- 3 | — | — | — |
| Plen-
Pon |
EX+ [2] | — | EX- [2] | RS+ | RS- | AI+ | AI- | SC | SC | — |
| IEPE | — | AI+ | AI- | — | — | — | — | — | — | — |
| TEDS | — | T+ 4 | T- | — | — | — | — | — | — | T+ 5 |
Deskripsyon siyal
| Siyal | Deskripsyon |
| AI+ | Positive analogue input signal connection |
| AI- | Negative analogue input signal connection |
| EX+ | Positive sensor excitation connection |
| EX- | 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 |
Kalite Mezi
NI-9218 la bay sipò entegre pou kalite mezi sa yo.
- ± 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.
Konsèy NI recommends using the NI-9982 screw-terminal adapter when using built-in measurement types on the NI-9218.
NI-9218 la bay sipò adisyonèl pou kalite mezi sa yo lè w ap itilize yon adaptè espesifik pou mezi.
- ±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)
Koneksyon ±16 V
NI-9218 la bay yon eksitasyon 12 V pou yon detèktè opsyonèl. Pou itilize eksitasyon 12 V a, konekte yon ekipman pou pouvwa 9 VDC a 30 VDC nan Vsup, konekte tèminal eksitasyon yo sou detèktè ou a nan EX+/EX-, epi aktive eksitasyon 12 V nan lojisyèl ou a.
Referans ki gen rapò:
- Koneksyon NI-9982 ±16 V
±65 mV Koneksyon
- You must connect AI to EX- on the NI-9218.
- NI-9218 la bay yon eksitasyon 12 V pou yon detèktè opsyonèl. Pou itilize eksitasyon 12 V a, konekte yon ekipman pou pouvwa 9 VDC a 30 VDC nan Vsup, konekte tèminal eksitasyon yo sou detèktè ou a nan EX+/EX-, epi aktive eksitasyon 12 V nan lojisyèl ou a.
Referans ki gen rapò
- NI-9982 ±65 mV Koneksyon Brochaj
Koneksyon Pon Konplè
- 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.
Referans ki gen rapò:
- NI-9982 Koneksyon Pon Konplè Pinout
Koneksyon IEPE yo
- 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.
Referans ki gen rapò:
- NI-9982 IEPE Koneksyon Pinout
Koneksyon ±20 mA
- Connecting ±20 mA signals requires the NI-9983.
- NI-9218 la bay yon eksitasyon 12 V pou yon detèktè opsyonèl. Pou itilize eksitasyon 12 V a, konekte yon ekipman pou pouvwa 9 VDC a 30 VDC nan Vsup, konekte tèminal eksitasyon yo sou detèktè ou a nan EX+/EX-, epi aktive eksitasyon 12 V nan lojisyèl ou a.
Connecting a loop-powered 2-wire or 3-wire transducer requires adding a 20 kΩ resistor between AI- and Ex-.
Referans ki gen rapò:
- Brochaj NI-9983
Koneksyon ±60 V
Connecting ±60 V signals requires the NI-9987.
Referans ki gen rapò:
- Brochaj NI-9987
Koneksyon Mwatye Pon
- 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.
Referans ki gen rapò:
- Brochaj NI-9986
Koneksyon Ka Pon
- Connecting 120 Ω quarter bridges requires the NI-9984.
- Connecting 350 Ω quarter bridges requires the NI-9985.
Konsèy 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.
Referans ki gen rapò:
- Brochaj NI-9984/9985
Koneksyon TEDS yo
For more information about TEDS, visit ni.com/info and enter the Info Code rdteds.
Sipò TEDS
- Capteur TEDS Klas 1 yo bay yon koòdone pou transfere enfòmasyon soti nan capteur yo. NI-9218 ak LEMO, NI-9218 ak DSUB, NI-9982L, NI-9982D, NI-9982F sipòte capteur TEDS Klas 1 yo.
- 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.
Topoloji Vsup Daisy Chain
NI-9218 la ak LEMO bay kat broch sou konektè Vsup la pou koneksyon an chèn (daisy chain).
Gid Koneksyon NI-9218
Make sure that the devices you connect to the NI-9218 are compatible with the module specifications.
Gid pou Kablaj Personnalisé
- Obsève direktiv sa yo lè w ap itilize adaptè konektè tas soude NI-9988 la oswa konektè sertizaj LEMO a (784162-01) pou kreye kab pèsonalize.
- 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.
Dyagram blòk NI-9218 la
- Two 24-bit analogue-to-digital converters (ADCs) simultaneously samptou de chanèl IA yo.
- 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.
Kondisyonman Siyal ±16 V ak ±65 mV
Siyal antre sou chak kanal yo mete nan yon tanpon, kondisyone, epi answit yoampdirije pa yon ADC.
Kondisyone Siyal Pon Konplè
- 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.
Kondisyonman Siyal 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 Kondisyone Siyal
The NI-9983 provides a current shunt for the incoming analogue signal.
±60 V Kondisyone Siyal
The NI-9987 provides an attenuator for the incoming analogue signal.
Kondisyonman Siyal Mwatye-Pon
- 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.
Kondisyone Mòd Ka-Pon
The NI-9984 and NI-9985 provide a quarter-bridge completion resistor and a half-bridge completion resistor.
Filtrage
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 la reprezante siyal ki nan pasband lan, jan yo mezire prensipalman pa ondilasyon pasband ak nonlinearite faz. Tout siyal ki parèt nan pasband san alyas la swa se siyal ki pa alyas oswa siyal ki te filtre omwen pa kantite rejè arè a.
Pasband
Siyal ki nan bann pasaj la gen yon gen oswa yon atenyasyon ki depann de frekans lan. Ti varyasyon nan gen anrapò ak frekans lan rele plat bann pasaj la. Filtè dijital NI-9218 yo ajiste seri frekans bann pasaj la pou l matche ak vitès done a. Se poutèt sa, kantite gen oswa atenyasyon nan yon frekans bay depann de vitès done a.
Stopband
Filtè a diminye anpil tout siyal ki pi wo pase frekans stopband la. Objektif prensipal filtè a se pou anpeche alyasing. Se poutèt sa, frekans stopband la adapte avèk presizyon ak vitès done a. Rejè stopband la se kantite minimòm atenyasyon filtè a aplike sou tout siyal ki gen frekans nan stopband la.
Pleasant san alyas
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.
Ouvèti yon adaptè mezi
Kisa pou w fè
- Unlock the measurement adapter housing/cover.
- Slide the measurement adapter housing/cover to access the screw terminals.
Enstalasyon NI-998xD/998xL la
Kisa pou itilize
- NI-998xD or NI-998xL Measurement Adapter
- M4 or Number 8 Screw
- Tournvis
Kisa pou w fè
Mount the measurement adapter to a flat surface using the mounting hole on the measurement adapter and the screw.
Adaptè Mezi Koneksyon Tè
Tèminal tè yo sou yon adaptè mezi konekte ak tè chasi a lè adaptè mezi a konekte ak NI-9218 la epi NI-9218 la enstale nan yon chasi.
Brochaj Adaptè Mezi
Seksyon sa yo gen ladan yo brochaj pou adaptè mezi NI-9218 yo.
Koneksyon NI-9982 ±16 V
Pins 3a and 3b are tied together on the NI-9982.
Referans ki gen rapò:
- Koneksyon ±16 V
NI-9982 ±65 mV Koneksyon Brochaj
Pins 3a and 3b are tied together on the NI-9982.
Referans ki gen rapò:
- ±65 mV Koneksyon
NI-9982 Koneksyon Pon Konplè Pinout
Pins 3a and 3b are tied together on the NI-9982.
Referans ki gen rapò:
- Koneksyon Pon Konplè
NI-9982 IEPE Koneksyon Pinout
Pins 3a and 3b are tied together on the NI-9982.
Referans ki gen rapò:
- Koneksyon IEPE yo
Brochaj NI-9983
Pins 3a and 3b are tied together on the NI-9983.
Referans ki gen rapò:
- Koneksyon ±20 mA
Brochaj NI-9984/9985
Referans ki gen rapò:
- Koneksyon Ka Pon
Brochaj NI-9986
Pins 3a and 3b are tied together on the NI-9986.
Referans ki gen rapò:
- Koneksyon Mwatye Pon
Brochaj NI-9987
Pins 3a and 3b are tied together on the NI-9987.
Referans ki gen rapò:
- Koneksyon ±60 V
FAQ
Dokiman / Resous
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