National Instruments NI-9218 Channel Analogue Input Module

Nkọwapụta

• Aha ngwaahịa: NI-9218
• Ụdị njikọ: LEMO na DSUB
• Ụdị nha: Nkwado arụnyere maka ụdị dị iche iche
• Ihe mmetụta sensọ: mkpali 12V nhọrọ

Ụdị njikọ

NI-9218 nwere ihe karịrị otu ụdị njikọ: NI-9218 nwere LEMO na NI-9218 nwere DSUB. Ọ gwụla ma akọwapụtara ụdị njikọ ahụ, NI-9218 na-ezo aka na ụdị njikọ abụọ ahụ.
NI-9218 Pịpụ

Signals by Measurement Type

Ụdị	Ntụtụ 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	—	—	—
Zuru oke - Akwa akwa	EX+ [2]	—	EX- [2]	RS+	RS-	AI +	AI-	SC	SC	—
IEPE	—	AI +	AI-	—	—	—	—	—	—	—
TDS	—	T+ 4	T-	—	—	—	—	—	—	T+ 5

Nkọwa mgbaàmà

Signal	Nkọwa
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

Ụdị nha

NI-9218 na-enye nkwado arụnyere maka ụdị nha ndị a.

• ± 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.

Ndụmọdụ NI recommends using the NI-9982 screw-terminal adapter when using built-in measurement types on the NI-9218.

NI-9218 na-enye nkwado agbakwunyere maka ụdị ntu ndị a mgbe ị na-eji ihe nkwụnye ihe akọwapụtara.

• ±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 Njikọ

NI-9218 na-enye mkpali ihe mmetụta 12V nhọrọ. Iji jiri mkpali 12 V, jikọọ ọkụ ọkụ 9 VDC na 30 VDC na Vsup, jikọọ ọnụ ihe mkpali na ihe mmetụta gị na EX +/EX-, wee mee ka 12 V nwee mkpali na ngwanrọ gị.

Ntụaka emetụtara:

• NI-9982 ± 16 V Njikọ Pinout

± 65 mV Njikọ

• You must connect AI to EX- on the NI-9218.
• NI-9218 na-enye mkpali ihe mmetụta 12V nhọrọ. Iji jiri mkpali 12 V, jikọọ ọkụ ọkụ 9 VDC na 30 VDC na Vsup, jikọọ ọnụ ihe mkpali na ihe mmetụta gị na EX +/EX-, wee mee ka 12 V nwee mkpali na ngwanrọ gị.

Ntụaka metụtara

• NI-9982 ± 65 mV Njikọ Pinout

Njikọ-Bridge zuru ezu

• 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.

Ntụaka emetụtara:

• NI-9982 Njikọ njikọ zuru oke

Njikọ 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.

Ntụaka emetụtara:

• NI-9982 Njikọ Njikọ IEPE

Njikọ ± 20 mA

• Connecting ±20 mA signals requires the NI-9983.
• NI-9218 na-enye mkpali ihe mmetụta 12V nhọrọ. Iji jiri mkpali 12 V, jikọọ ọkụ ọkụ 9 VDC na 30 VDC na Vsup, jikọọ ọnụ ihe mkpali na ihe mmetụta gị na EX +/EX-, wee mee ka 12 V nwee mkpali na ngwanrọ gị.

Connecting a loop-powered 2-wire or 3-wire transducer requires adding a 20 kΩ resistor between AI- and Ex-.

Ntụaka emetụtara:

• NI-9983 Pịpụ

± 60 V Njikọ

Connecting ±60 V signals requires the NI-9987.
Ntụaka emetụtara:

• NI-9987 Pịpụ

Njikọ Ọkara Ọkara

• 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.

Ntụaka emetụtara:

• NI-9986 Pịpụ

Njikọ Quarter-Bridge

• Connecting 120 Ω quarter bridges requires the NI-9984.
• Connecting 350 Ω quarter bridges requires the NI-9985.

Ndụmọdụ 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.

Ntụaka emetụtara:

• NI-9984/9985 Pinout

Njikọ TDS

For more information about TEDS, visit ni.com/info and enter the Info Code rdteds.

Nkwado TDS

• Ihe mmetụta TEDS Class 1 na-enye interface maka ịnyefe ozi site na sensọ. NI-9218 nwere LEMO, NI-9218 nwere DSUB, NI-9982L, NI-9982D, NI-9982F na-akwado TEDS Class 1 sensọ.
• 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 nwere LEMO na-enye ntụtụ anọ na njikọ Vsup maka ịgbụ daisy.
Ntuziaka njikọ NI-9218

Make sure that the devices you connect to the NI-9218 are compatible with the module specifications.

Ntuziaka Cabling omenala

• Debe ụkpụrụ nduzi ndị a mgbe ị na-eji ihe nkwụnye njikọ iko solder NI-9988 ma ọ bụ njikọ crimp LEMO (784162-01) iji mepụta eriri omenala.
• 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.

Eserese NI-9218 Block

• Two 24-bit analogue-to-digital converters (ADCs) simultaneously sampma ọwa 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 na ± 65 mV Nkwado Mgbama

A na-echekwa akara ntinye na ọwa ọ bụla, nwee ọnọdụ, wee samponye ADC na-edu.

Nkwado nrịbama akwa akwa zuru oke

• 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 Nkwado Mgbama

The NI-9983 provides a current shunt for the incoming analogue signal.

± 60 V Nkwado akara

The NI-9987 provides an attenuator for the incoming analogue signal.

Ntụkwado mgbama 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.

Ọnọdụ nkeji iri na ise nke akwa mmiri oyi

The NI-9984 and NI-9985 provide a quarter-bridge completion resistor and a half-bridge completion resistor.
Nzacha
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 na-anọchi anya akara n'ime pasbọọdụ ahụ, dị ka agbapụtara ya site na pasband ripple na nke na-anọghị n'ịntanetị. Mgbama niile na-egosi na bandwit na-enweghị utu aha bụ ma ọ bụ akara na-edeghị aha ma ọ bụ akara nke enyochala ma ọ dịkarịa ala ọnụọgụ nkwụsị nkwụsị.

Akwụkwọ ikike ngafe

Ihe nrịbama dị n'ime eriri ngafe nwere uru dabere ugboro ole ma ọ bụ mbelata. Obere obere mgbanwe na uru n'ihe gbasara ugboro ole ka a na-akpọ passband flatness. Ihe nzacha dijitalụ nke NI-9218 na-ahazi ugboro ole nke passband ka ọ dabara na ọnụego data. Ya mere, ọnụ ọgụgụ nke uru ma ọ bụ attenuation na a nyere ugboro na-adabere na data ọnụego.

Kwụsị
Ihe nzacha a na-ebelata akara ngosi niile n'elu ugboro ugboro. Ebumnuche bụ isi nke nzacha a bụ igbochi aliasing. Ya mere, ugboro nkwụsị nkwụsị na-adabere kpọmkwem na ọnụego data. Ọjụjụ nke eriri nkwụsị bụ opekempe nke mbelata nke nzacha na-etinye na akara ngosi niile nwere ugboro dị n'ime eriri nkwụsị.

Bandwit na-enweghị aha
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.

Imepe ihe nkwụnye ihe

Ihe a ga-eme

• Unlock the measurement adapter housing/cover.
• Slide the measurement adapter housing/cover to access the screw terminals.

Ịgbanye NI-998xD/998xL
Ihe a ga-eji

• NI-998xD or NI-998xL Measurement Adapter
• M4 or Number 8 Screw
• Screwdriver

Ihe a ga-eme

Mount the measurement adapter to a flat surface using the mounting hole on the measurement adapter and the screw.

Ihe nkwụnye ihe nleba anya

A na-ejikọta ọnụ ọnụ ala na ihe nkwụnye ihe na chassis ala mgbe ejikọrọ ihe nkwụnye nha na NI-9218 na NI-9218 na-etinye na chassis.

Pinouts nkwụnye ihe atụ

Akụkụ ndị a gụnyere pinouts maka ihe nkwụnye nha NI-9218.

NI-9982 ± 16 V Njikọ Pinout

Pins 3a and 3b are tied together on the NI-9982.
Ntụaka emetụtara:

• ± 16 V Njikọ

NI-9982 ± 65 mV Njikọ Pinout

Pins 3a and 3b are tied together on the NI-9982.

Ntụaka emetụtara:

• ± 65 mV Njikọ

NI-9982 Njikọ njikọ zuru oke

Pins 3a and 3b are tied together on the NI-9982.

Ntụaka emetụtara:

• Njikọ-Bridge zuru ezu

 

NI-9982 Njikọ Njikọ IEPE

Pins 3a and 3b are tied together on the NI-9982.
Ntụaka emetụtara:

• Njikọ IEPE
  NI-9983 Pịpụ

Pins 3a and 3b are tied together on the NI-9983.
Ntụaka emetụtara:

• Njikọ ± 20 mA
  NI-9984/9985 Pinout

Ntụaka emetụtara:

• Njikọ Quarter-Bridge
  NI-9986 Pịpụ

Pins 3a and 3b are tied together on the NI-9986.
Ntụaka emetụtara:

• Njikọ Ọkara Ọkara
  NI-9987 Pịpụ

Pins 3a and 3b are tied together on the NI-9987.
Ntụaka emetụtara:

• ± 60 V Njikọ

FAQ

Akwụkwọ / akụrụngwa

Ngwa mba NI-9218 Ọwa Analog Ntinye Module [pdf] Akwụkwọ ntuziaka NI-9218 nwere LEMO, NI-9218 nwere DSUB, NI-9218 Channel Analog Input Module, NI-9218, Channel Analog Input Module, Analog Input Module, Module Ntinye

Ntụaka

• Akwụkwọ ntuziaka onye ọrụ