National Instruments NI-9218 Channel Analogue Input Module

Speċifikazzjonijiet

• Isem tal-Prodott: NI-9218
• Tipi ta' Konnetturi: LEMO u DSUB
• Tipi ta' Kejl: Appoġġ integrat għal diversi tipi
• Eċċitazzjoni tas-Sensor: Eċċitazzjoni ta' 12V fakultattiva

Tipi ta' Konnettur

L-NI-9218 għandu aktar minn tip wieħed ta' konnettur: NI-9218 b'LEMO u NI-9218 b'DSUB. Sakemm ma jkunx speċifikat it-tip ta' konnettur, NI-9218 jirreferi għaż-żewġ tipi ta' konnetturi.
NI-9218 Pinout

Signals by Measurement Type

Modalità	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	—	—	—
Sħiħ- Pont	EX+ [2]	—	EX- [2]	RS+	RS-	AI+	AI-	SC	SC	—
IEPE	—	AI+	AI-	—	—	—	—	—	—	—
TEDS	—	T+ 4	T-	—	—	—	—	—	—	T+ 5

Deskrizzjonijiet tas-Sinjali

Sinjal	Deskrizzjoni
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

Tipi ta' Kejl

L-NI-9218 jipprovdi appoġġ integrat għat-tipi ta' kejl li ġejjin.

• ±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.

L-NI-9218 jipprovdi appoġġ addizzjonali għat-tipi ta' kejl li ġejjin meta jintuża adapter speċifiku għall-kejl.

• ±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)

Konnessjonijiet ta' ±16 V

L-NI-9218 jipprovdi eċċitazzjoni tas-sensur ta' 12 V fakultattiva. Biex tuża l-eċitazzjoni ta' 12 V, qabbad provvista tal-enerġija ta' 9 VDC sa 30 VDC ma' Vsup, qabbad it-terminals tal-eċitazzjoni fuq is-sensur tiegħek ma' EX+/EX-, u attiva l-eċitazzjoni ta' 12 V fis-softwer tiegħek.

Referenza relatata:

• NI-9982 ±16 V Konnessjoni Pinout

Konnessjonijiet ta' ±65 mV

• You must connect AI to EX- on the NI-9218.
• L-NI-9218 jipprovdi eċċitazzjoni tas-sensur ta' 12 V fakultattiva. Biex tuża l-eċitazzjoni ta' 12 V, qabbad provvista tal-enerġija ta' 9 VDC sa 30 VDC ma' Vsup, qabbad it-terminals tal-eċitazzjoni fuq is-sensur tiegħek ma' EX+/EX-, u attiva l-eċitazzjoni ta' 12 V fis-softwer tiegħek.

Referenza relatata

• NI-9982 ±65 mV Pinout tal-Konnessjoni

Konnessjonijiet ta' Pont Sħiħ

• 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.

Referenza relatata:

• Pinout tal-Konnessjoni tal-Pont Sħiħ NI-9982

Konnessjonijiet tal-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.

Referenza relatata:

• NI-9982 Pinout tal-Konnessjoni IEPE

Konnessjonijiet ta' ±20 mA

• Connecting ±20 mA signals requires the NI-9983.
• L-NI-9218 jipprovdi eċċitazzjoni tas-sensur ta' 12 V fakultattiva. Biex tuża l-eċitazzjoni ta' 12 V, qabbad provvista tal-enerġija ta' 9 VDC sa 30 VDC ma' Vsup, qabbad it-terminals tal-eċitazzjoni fuq is-sensur tiegħek ma' EX+/EX-, u attiva l-eċitazzjoni ta' 12 V fis-softwer tiegħek.

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

Referenza relatata:

• NI-9983 Pinout

Konnessjonijiet ta' ±60 V

Connecting ±60 V signals requires the NI-9987.
Referenza relatata:

• NI-9987 Pinout

Konnessjonijiet ta' Nofs Pont

• 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.

Referenza relatata:

• NI-9986 Pinout

Konnessjonijiet ta' Kwart ta' Pont

• 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.

Referenza relatata:

• NI-9984/9985 Pinout

Konnessjonijiet TEDS

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

Appoġġ TEDS

• Sensuri TEDS Klassi 1 jipprovdu interfaċċja għat-trasferiment ta' informazzjoni mis-sensuri. L-NI-9218 b'LEMO, NI-9218 b'DSUB, NI-9982L, NI-9982D, NI-9982F jappoġġjaw sensuri TEDS Klassi 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.
  

  Topoloġija tal-Katina Daisy Vsup

L-NI-9218 bil-LEMO jipprovdi erba' pinnijiet fuq il-konnettur Vsup għal daisy chaining.
Linji Gwida dwar il-Konnessjoni NI-9218

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

Linji Gwida dwar il-Kejbils Personalizzati

• Osserva l-linji gwida li ġejjin meta tuża l-adapter tal-konnettur tat-tazza tal-istann NI-9988 jew il-konnettur crimp LEMO (784162-01) biex toħloq kejbils apposta.
• 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.

Dijagramma tal-Blokk NI-9218

• Two 24-bit analogue-to-digital converters (ADCs) simultaneously sampiż-żewġ kanali tal-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.

Kondizzjonament tas-Sinjal ±16 V u ±65 mV

Is-sinjali tad-dħul fuq kull kanal huma buffered, ikkundizzjonati, u mbagħad sampimmexxi minn ADC.

Kondizzjonament tas-Sinjali fuq Pont Sħiħ

• 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.

Kondizzjonament tas-Sinjali tal-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.

Kondizzjonament tas-Sinjal ±20 mA

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

Kondizzjonament tas-Sinjal ±60 V

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

Kondizzjonament tas-Sinjali ta' Nofs Pont

• 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.

Kondizzjonament tal-Modalità Kwart ta' Pont

The NI-9984 and NI-9985 provide a quarter-bridge completion resistor and a half-bridge completion resistor.
Iffiltrar
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.
L-NI-9218 jirrappreżenta sinjali fil-passband, kif kwantifikat primarjament mir-ripple tal-passband u n-nonlinearità tal-fażi. Is-sinjali kollha li jidhru fil-bandwidth mingħajr alias huma jew sinjali mhux aliasjati jew sinjali li ġew iffiltrati b'mill-inqas l-ammont tar-rifjut tal-stopband.

Passband

Is-sinjali fil-passband għandhom qligħ jew attenwazzjoni dipendenti fuq il-frekwenza. L-ammont żgħir ta' varjazzjoni fil-qligħ fir-rigward tal-frekwenza jissejjaħ il-flatness tal-passband. Il-filtri diġitali tal-NI-9218 jaġġustaw il-firxa tal-frekwenza tal-passband biex taqbel mar-rata tad-dejta. Għalhekk, l-ammont ta' qligħ jew attenwazzjoni fi frekwenza partikolari jiddependi fuq ir-rata tad-dejta.

Stopband
Il-filtru jnaqqas b'mod sinifikanti s-sinjali kollha 'l fuq mill-frekwenza tal-stopband. L-għan ewlieni tal-filtru huwa li jipprevjeni l-aliasing. Għalhekk, il-frekwenza tal-stopband tiskala preċiżament mar-rata tad-dejta. Ir-rifjut tal-stopband huwa l-ammont minimu ta' attenwazzjoni applikat mill-filtru għas-sinjali kollha bi frekwenzi fi ħdan il-stopband.

Bandwidth Mingħajr 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.

Ftuħ ta' Adapter tal-Kejl

X'għandek tagħmel

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

Immuntar tal-NI-998xD/998xL
X'għandek tuża

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

X'għandek tagħmel

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

Erring tal-Adapter tal-Kejl

It-terminals tal-ert fuq adapter tal-kejl huma konnessi mal-ert tax-chassis meta l-adapter tal-kejl ikun konness man-NI-9218 u l-NI-9218 ikun installat f'chassis.

Pinouts tal-Adapter tal-Kejl

It-taqsimiet li ġejjin jinkludu l-pinouts għall-adapters tal-kejl NI-9218.

NI-9982 ±16 V Konnessjoni Pinout

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

• Konnessjonijiet ta' ±16 V

NI-9982 ±65 mV Pinout tal-Konnessjoni

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

Referenza relatata:

• Konnessjonijiet ta' ±65 mV

Pinout tal-Konnessjoni tal-Pont Sħiħ NI-9982

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

Referenza relatata:

• Konnessjonijiet ta' Pont Sħiħ

 

NI-9982 Pinout tal-Konnessjoni IEPE

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

• Konnessjonijiet tal-IEPE
  NI-9983 Pinout

Pins 3a and 3b are tied together on the NI-9983.
Referenza relatata:

• Konnessjonijiet ta' ±20 mA
  NI-9984/9985 Pinout

Referenza relatata:

• Konnessjonijiet ta' Kwart ta' Pont
  NI-9986 Pinout

Pins 3a and 3b are tied together on the NI-9986.
Referenza relatata:

• Konnessjonijiet ta' Nofs Pont
  NI-9987 Pinout

Pins 3a and 3b are tied together on the NI-9987.
Referenza relatata:

• Konnessjonijiet ta' ±60 V

FAQ

Dokumenti / Riżorsi

Modulu ta' Input Analogu tal-Kanal NI-9218 ta' National Instruments [pdfManwal tal-Istruzzjonijiet NI-9218 b'LEMO, NI-9218 b'DSUB, Modulu ta' Input Analogu tal-Kanal NI-9218, NI-9218, Modulu ta' Input Analogu tal-Kanal, Modulu ta' Input Analogu, Modulu ta' Input

Referenzi

• Manwal għall-Utent