National Instruments NI-9218 Channel Analogue Input Module
Zofotokozera
- Dzina lazogulitsa: NI-9218
- Mitundu Yolumikizira: LEMO ndi DSUB
- Mitundu Yoyezera: Thandizo lopangidwira lamitundu yosiyanasiyana
- Chisangalalo cha Sensor: Chosangalatsa cha 12V
Mitundu Yolumikizira
NI-9218 ili ndi mitundu yambiri yolumikizira: NI-9218 yokhala ndi LEMO ndi NI-9218 yokhala ndi DSUB. Pokhapokha ngati cholumikizira chafotokozedwa, NI-9218 imatanthawuza mitundu yonse yolumikizira.
Chithunzi cha 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] | — | EX- [2] | — | — | AI + | AI- 3 | — | — | — |
| Zonse-
Bridge |
EX+ [2] | — | EX- [2] | RS+ | RS- | AI + | AI- | SC | SC | — |
| IEPE | — | AI + | AI- | — | — | — | — | — | — | — |
| TEDS | — | T+ 4 | T- | — | — | — | — | — | — | T+ 5 |
Mafotokozedwe a Signal
| Chizindikiro | Kufotokozera |
| 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 |
Mitundu Yoyezera
NI-9218 imapereka chithandizo chokhazikika chamitundu yotsatirayi.
- ± 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.
Langizo NI recommends using the NI-9982 screw-terminal adapter when using built-in measurement types on the NI-9218.
NI-9218 imapereka chithandizo chowonjezera cha mitundu yotsatirayi yoyezera mukamagwiritsa ntchito adaputala yeniyeni yoyezera.
- ±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 zolumikizira
NI-9218 imapereka chisangalalo cha 12 V sensor. Kuti mugwiritse ntchito chisangalalo cha 12 V, gwirizanitsani mphamvu ya 9 VDC ku 30 VDC ku Vsup, gwirizanitsani malo osangalatsa pa sensa yanu ku EX +/EX-, ndikuthandizira 12 V chisangalalo mu pulogalamu yanu.
Zofananira nazo:
- NI-9982 ± 16 V Connection Pinout
± 65 mV zolumikizira
- You must connect AI to EX- on the NI-9218.
- NI-9218 imapereka chisangalalo cha 12 V sensor. Kuti mugwiritse ntchito chisangalalo cha 12 V, gwirizanitsani mphamvu ya 9 VDC ku 30 VDC ku Vsup, gwirizanitsani malo osangalatsa pa sensa yanu ku EX +/EX-, ndikuthandizira 12 V chisangalalo mu pulogalamu yanu.
Zogwirizana nazo
- NI-9982 ± 65 mV Connection Pinout
Malumikizidwe a Full Bridge
- 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.
Zofananira nazo:
- NI-9982 Full-Bridge Connection Pinout
Kugwirizana kwa 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.
Zofananira nazo:
- NI-9982 IEPE Connection Pinout
± 20 mA zolumikizira
- Connecting ±20 mA signals requires the NI-9983.
- NI-9218 imapereka chisangalalo cha 12 V sensor. Kuti mugwiritse ntchito chisangalalo cha 12 V, gwirizanitsani mphamvu ya 9 VDC ku 30 VDC ku Vsup, gwirizanitsani malo osangalatsa pa sensa yanu ku EX +/EX-, ndikuthandizira 12 V chisangalalo mu pulogalamu yanu.
Connecting a loop-powered 2-wire or 3-wire transducer requires adding a 20 kΩ resistor between AI- and Ex-.
Zofananira nazo:
- Chithunzi cha NI-9983
± 60 V zolumikizira
Connecting ±60 V signals requires the NI-9987.
Zofananira nazo:
- Chithunzi cha NI-9987
Malumikizidwe a 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.
Zofananira nazo:
- Chithunzi cha NI-9986
Kulumikizana kwa Quarter-Bridge
- Connecting 120 Ω quarter bridges requires the NI-9984.
- Connecting 350 Ω quarter bridges requires the NI-9985.
Langizo 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.
Zofananira nazo:
- NI-9984/9985 Pinout
Zogwirizana ndi TEDS
For more information about TEDS, visit ni.com/info and enter the Info Code rdteds.
Thandizo la TEDS
- Masensa a TEDS Class 1 amapereka mawonekedwe otumizira uthenga kuchokera ku masensa. NI-9218 yokhala ndi LEMO, NI-9218 yokhala ndi DSUB, NI-9982L, NI-9982D, NI-9982F imathandizira masensa a 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
NI-9218 yokhala ndi LEMO imapereka zikhomo zinayi pa cholumikizira cha Vsup cha daisy chaining.
NI-9218 Connection Malangizo
Make sure that the devices you connect to the NI-9218 are compatible with the module specifications.
Maupangiri Amakonda Ma Cabling
- Yang'anani malangizo awa mukamagwiritsa ntchito cholumikizira kapu ya solder ya NI-9988 kapena cholumikizira cha LEMO crimp (784162-01) kuti mupange zingwe zokhazikika.
- 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.
Chithunzi cha NI-9218 Block
- Two 24-bit analogue-to-digital converters (ADCs) simultaneously sampndi njira zonse za 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 ndi ± 65 mV Signal Conditioning
Zizindikiro zolowetsa pa tchanelo chilichonse zimasungidwa, zokhazikika, kenako sampmotsogozedwa ndi ADC.
Full-Bridge Signal Conditioning
- 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.
IEPE Signal Conditioning
- 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 Signal Conditioning
The NI-9983 provides a current shunt for the incoming analogue signal.
± 60 V Signal Conditioning
The NI-9987 provides an attenuator for the incoming analogue signal.
Half-Bridge Signal Conditioning
- 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.
Quarter-Bridge Mode Conditioning
The NI-9984 and NI-9985 provide a quarter-bridge completion resistor and a half-bridge completion resistor.
Kusefa
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 imayimira zizindikiro mkati mwa passband, monga momwe zimakhalira makamaka ndi passband ripple ndi gawo losagwirizana. Zizindikiro zonse zomwe zimawoneka mu bandwidth yopanda alias mwina ndi zizindikiro zosasinthika kapena zizindikiro zomwe zasefedwa ndi kuchuluka kwa kukana kwa stopband.
Chiphaso
Zizindikiro zomwe zili mkati mwa passband zimakhala ndi phindu lodalira pafupipafupi kapena kuchepetsedwa. Kuchepa kwapang'onopang'ono pakupindula pokhudzana ndi pafupipafupi kumatchedwa passband flatness. Zosefera za digito za NI-9218 zimasintha ma frequency angapo a passband kuti agwirizane ndi kuchuluka kwa data. Chifukwa chake, kuchuluka kwa phindu kapena kuchepetsedwa pafupipafupi kumatengera kuchuluka kwa data.
Choyimitsa
Zosefera zimatsitsa kwambiri ma siginecha onse pamwamba pa ma frequency a stopband. Cholinga chachikulu cha fyuluta ndikuletsa kutchedwa aliasing. Chifukwa chake, ma frequency a stopband amawongolera ndendende ndi kuchuluka kwa data. Kukana kwa stopband ndikocheperako kuchepetsedwa komwe kumagwiritsidwa ntchito ndi fyuluta kuzizindikiro zonse zokhala ndi ma frequency mkati mwa stopband.
Bandwidth Alias-Free
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.
Kutsegula Adapter Yoyezera
Zoyenera kuchita
- Unlock the measurement adapter housing/cover.
- Slide the measurement adapter housing/cover to access the screw terminals.
Kuyika NI-998xD/998xL
Zoti Muzigwiritsa Ntchito
- NI-998xD or NI-998xL Measurement Adapter
- M4 or Number 8 Screw
- Screwdriver
Zoyenera kuchita
Mount the measurement adapter to a flat surface using the mounting hole on the measurement adapter and the screw.
Kuyika Adapter Kuyika
Ma terminals apansi pa adapter yoyezera amalumikizidwa ku chassis ground pomwe adapter yoyezera imalumikizidwa ndi NI-9218 ndipo NI-9218 imayikidwa mu chassis.
Kuyeza kwa Adapter Pinouts
Magawo otsatirawa akuphatikiza ma pinouts a ma adapter a NI-9218.
NI-9982 ± 16 V Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Zofananira nazo:
- ± 16 V zolumikizira
NI-9982 ± 65 mV Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Zofananira nazo:
- ± 65 mV zolumikizira
NI-9982 Full-Bridge Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Zofananira nazo:
- Malumikizidwe a Full Bridge
NI-9982 IEPE Connection Pinout
Pins 3a and 3b are tied together on the NI-9982.
Zofananira nazo:
- Kugwirizana kwa IEPE
Chithunzi cha NI-9983
Pins 3a and 3b are tied together on the NI-9983.
Zofananira nazo:
- ± 20 mA zolumikizira
NI-9984/9985 Pinout
Zofananira nazo:
- Kulumikizana kwa Quarter-Bridge
Chithunzi cha NI-9986
Pins 3a and 3b are tied together on the NI-9986.
Zofananira nazo:
- Malumikizidwe a Half Bridge
Chithunzi cha NI-9987
Pins 3a and 3b are tied together on the NI-9987.
Zofananira nazo:
- ± 60 V zolumikizira
FAQ
Zolemba / Zothandizira
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National Instruments NI-9218 Channel Analog Input Module [pdf] Buku la Malangizo NI-9218 yokhala ndi LEMO, NI-9218 yokhala ndi DSUB, NI-9218 Channel Analog Input Module, NI-9218, Channel Analog Input Module, Analogi Input Module, Input Module |