National Instruments NI 9219E User manual

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OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9219E
4-Channel, 24-Bit, Universal Analog Input Module
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NI 9219E Operating Instructions and Specifications 2 ni.com
This document describes how to use the National Instruments 9219E
and includes dimensions, terminal assignments, and specifications for
the NI 9219E. Visit ni.com/info and enter rdsoftwareversion
to determine which software you need for the modules you are using.
For information about installing, configuring, and programming the
system, refer to the system documentation. Visit ni.com/info and
enter cseriesdoc for information about C Series documentation.
Caution National Instruments makes no electromagnetic
compatibility (EMC) or CE marking compliance claims
for the NI 9219E. The end-product supplier is responsible
for conformity to any and all compliance requirements.
Caution The NI 9219E must be installed inside a suitable
enclosure prior to use. Hazardous voltages may be present.
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© National Instruments Corp. 3 NI 9219E Operating Instructions and Specifications
NI 9219E Dimensions
The following figure shows the dimensions of the NI 9219E.
Figure 1. NI 9219E Dimensions in Millimeters (Inches)
73.4 (2.89)
0.0 (0.00)
0.0 (0.00)
26.7 (1.05) 58.4 (2.30) 66.0 (2.60)
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NI 9219E Operating Instructions and Specifications 4 ni.com
Connecting the NI 9219E
The NI 9219E has four 6-terminal spring-terminal connectors that
provide connections for four analog input channels.
Figure 2. NI 9219E Channel and Terminal Assignments
4
5
6
4
5
6
4
5
6
4
5
6
1
2
3
1
2
3
1
2
3
1
2
3
Ch 0
Ch 1
Ch 2
Ch 3
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© National Instruments Corp. 5 NI 9219E Operating Instructions and Specifications
Table 1. NI 9219E Signal Names
Terminal Signal Name Signal Description
1T+ TEDS Data
2T– TEDS COM
3EX+/HI*Positive excitation or input signal
4HI Positive input signal
5EX–/LO*Negative excitation or input signal
6LO Negative input signal
*Depending on the mode, terminals 3 and 5 are either the excitation signals or the
input signals.
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NI 9219E Operating Instructions and Specifications 6 ni.com
Table 2. NI 9219E Terminal Assignments by Mode
Mode
Terminal
123456
Voltage T+ T–—HI LO —
Current T+ T–HI —LO —
4-Wire Resistance T+ T–EX+ HI EX–LO
2-Wire Resistance T+ T–HI —LO —
Thermocouple T+ T–—HI LO —
4-Wire RTD T+ T–EX+ HI EX–LO
3-Wire RTD T+ T–EX+ —EX–LO
Quarter-Bridge T+ T–HI —LO —
Half-Bridge T+ T–EX+ HI EX–—
Full-Bridge T+ T–EX+ HI EX–LO
Digital In T+ T–—HI LO —
Open Contact T+ T–HI —LO —
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© National Instruments Corp. 7 NI 9219E Operating Instructions and Specifications
Connecting the NI 9219E
Connect the positive signal of the signal source to the positive input
signal terminal (HI) and the negative signal of the signal source
to the negative input signal terminal (LO). Use the excitation
terminals if the sensor requires a separate excitation connection.
Refer to the NI 9219E Circuitry section for information about
connections in each mode.
Connecting Wires to the Spring-Terminal Connectors
Use a flathead screwdriver with a blade smaller than 2.3 × 1.0 mm
(0.09 × 0.04 in.) to connect wires to the detachable spring-terminal
connectors. Insert the screwdriver into a spring clamp activation
slot and press a wire into the corresponding connector terminal,
then remove the screwdriver to clamp the wire into the terminal.
Refer to the Specifications section for more information about
spring-terminal wiring. Refer to Figure 3 for an illustration of
connecting wires to the NI 9219E.
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NI 9219E Operating Instructions and Specifications 8 ni.com
Figure 3. Connecting Wires to the NI 9219E Spring-Terminal Connectors
Connecting TEDS Channels
The NI 9219E supports only Class II TEDS sensors. Connect the
two TEDS lines to
TEDS Data (T+) and TEDS COM (T–) and
ensure that neither T+ nor T– is tied in common to any of the signal
inputs (terminals 3 through 6) on the NI 9219E. Visit ni.com/
info and enter the info code rdteds for information about
TEDS sensors.
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© National Instruments Corp. 9 NI 9219E Operating Instructions and Specifications
Connecting Signal Sources to the NI 9219E
You can connect ground-referenced or floating signal sources to
the NI 9219E. If you make a floating connection between the signal
source and the NI 9219E, make sure the voltages on the positive
and negative connections are within the channel-to-earth working
voltage range to ensure proper operation of the NI 9219E. Refer to
the Specifications section for more information about operating
voltages and overvoltage protection.
Note For best signal quality, National Instruments
recommends using shielded cables and twisted pair
wiring whenever possible.
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