NI 9201E Manual de usuario
OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9201E/9221E
8-Channel, 12-Bit Analog Input Modules
NI 9201E/9221E 2 ni.com
This document describes how to use the National Instruments 9201E
and National Instruments 9221E and includes dimensions, terminal
assignments, and specifications for the NI 9201E/9221E. In this
document, the NI 9201E/9221E with screw terminal
and NI 9201E/9221E with DSUB are referred to inclusively
as the NI 9201E/9221E. 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 9201E/9221E. The end-product supplier is
responsible for conformity to any and all compliance
requirements.
Caution The NI 9201E/9221E must be installed inside a
suitable enclosure prior to use. Hazardous voltages may
be present.
© National Instruments Corp. 3 NI 9201E/9221E
NI 9201E/9221E Dimensions
The following figure shows the dimensions of the
NI 9201E/9221E.
Figure 1. NI 9201E/9221E Dimensions in Millimeters (Inches)
73.4 (2.89)
0.0 (0.00)
26.7 (1.05)
58.4 (2.30)
66.0 (2.60)
0.0 (0.00)
NI 9201E/9221E 4 ni.com
Connecting the NI 9201E/9221E
The NI 9201E/9221E provides connections for eight analog input
channels.
Figure 2. NI 9201E/9221E Terminal and Pin Assignments
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
NC
COM
COM
AI0
NC
AI1
AI2
NC
AI3
AI4
NC
AI5
AI6
NC
AI7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
AI0
AI1
AI2
AI3
AI4
AI5
AI6
AI7
NC
COM
0
1
2
3
4
5
6
7
8
9
© National Instruments Corp. 5 NI 9201E/9221E
The NI 9201E/9221E with screw terminal has a 10-terminal,
detachable screw-terminal connector. The NI 9201E/9221E with
DSUB has a 25-pin DSUB connector. Each channel has an AI
terminal or pin to which you can connect a voltage signal. COM,
the common terminal or pin, is internally connected to the isolated
ground reference of the module.
The NI 9201E/9221E channels are isolated from other modules in
the system. The module protects each channel from overvoltages.
Refer to the Specifications section for more information about
overvoltage protection. The input signals are scanned, buffered,
conditioned, and then sampled by a single 12-bit ADC. Refer to
Figure 3 for an illustration of the input circuitry on the
NI 9201E/9221E.
Figure 3. Input Circuitry on the NI 9201E/9221E
NI 9201E/9221E
Buffer Isolated
ADC
Overvoltage
Protection Mux
COM
AI7
AI0
NI 9201E/9221E 6 ni.com
You can connect single-ended voltage signals to the
NI 9201E/9221E. Connect the positive lead of the voltage signal
to AI. Connect the ground signal to COM. Refer to Figure 4 for an
illustration of connecting a single-ended voltage signal to the
NI 9201E/9221E.
Figure 4. Connecting a Single-Ended Voltage Signal to the NI 9201E/9221E
Note You must use 2-wire ferrules to create a secure
connection when connecting more than one wire to a
single terminal on the NI 9201E/9221E with screw
terminal.
COM
AI
+
–
Voltage
Source
NI 9201E/9221E
© National Instruments Corp. 7 NI 9201E/9221E
Sleep Mode
This module supports a low-power sleep mode. Support for sleep
mode at the system level depends on the chassis that the module is
plugged into. Refer to the chassis manual for information about
support for sleep mode. If the chassis supports sleep mode, refer to
the software help for information about enabling sleep mode. Visit
ni.com/info and enter cseriesdoc for information about
C Series documentation.
Typically, when a system is in sleep mode, you cannot
communicate with the modules. In sleep mode, the system
consumes minimal power and may dissipate less heat than it does
in normal mode. Refer to the Specifications section for more
information about power consumption and thermal dissipation.
NI 9201E/9221E 8 ni.com
Specifications
The following specifications are typical for the range –40 to 85 °C
internal to any enclosures unless otherwise noted. All voltages are
relative to COM unless otherwise noted. The specifications are the
same for the NI 9201E and the NI 9221E unless otherwise noted.
Input Characteristics
Number of channels..........................8 analog input channels
ADC resolution................................. 12 bits
Type of ADC..................................... Successive approximation
register (SAR)
Sample rate (aggregate)
Module
Maximum
Sample Rate
(R Series Expansion Chassis)
Maximum
Sample Rate
(All Other Chassis)
NI 9201E,
single channel
475 kS/s 800 kS/s
NI 9201E,
scanning
475 kS/s 500 kS/s
NI 9221E 475 kS/s 800 kS/s
© National Instruments Corp. 9 NI 9201E/9221E
Input range
NI 9201E ....................................±10 V
NI 9221E ....................................±60 V
Operating voltage ranges
Overvoltage protection
(channel-to-COM) ............................ ±100 V
Module
Measurement Voltage,
Channel-to-COM
Maximum Voltage,
Channel-to-Earth Ground
or COM-to-Earth Ground
Min
(V)
Typ
(V)
Max
(V)
Screw
Ter mi nal DSUB
NI 9201E ±10.3 ±10.53 ±10.8 250 Vrms ±60 VDC
NI 9221E ±61.4 ±62.50 ±63.8
NI 9201E/9221E 10 ni.com
NI 9201E accuracy (excludes noise)
Measurement Conditions
Percent of
Reading
(Gain Error)
Percent of
Range*
(Offset Error)
Calibrated typ (25 °C, ±5 °C) ±0.04% ±0.07%
Calibrated max (–40 to 85 °C) ±0.25% ±0.25%
Uncalibrated typ (25 °C, ±5 °C) ±0.26% ±0.46%
Uncalibrated max (–40 to 85 °C) ±0.67% ±1.25%
*Range equals 10.53 V
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