National Instruments NI-9208 Manual de usuario
NI-9208 Getting
Started
2022-07-01
Contents
Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NI-9208 with Spring Terminal Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NI-9208 with DSUB Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NI 9208 with Spring Terminal Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connecting an External Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connecting a Loop-Powered Current Transducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting a Three-Wire Current Transducer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
NI-9208 Connection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
High-Vibration Application Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Overvoltage Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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NI-9208 Getting Started
Before You Begin
Read the NI-9208 Safety, Environmental, and Regulatory Information and
complete the soware and hardware installation procedures in your chassis
documentation.
Safety Guidelines
Caution Observe all instructions and cautions in the user documentation.
Using the product in a manner not specified can damage the product and
compromise the built-in safety protection.
Attention Suivez toutes les instructions et respectez toutes les mises
en garde de la documentation d'utilisation. L'utilisation du produit de
toute autre façon que celle spécifiée risque de l'endommager et de
compromettre la protection de sécurité intégrée.
NI-9208 with Spring Terminal Safety Voltages
Connect only voltages that are within the following limits:
Isolation
Channel-to-channel None
Channel-to-earth ground
Continuous 250 V RMS, Measurement Category II
Withstand, up to 4,000 m 3,000 V RMS, verified by a 5 s dielectric withstand test
NI-9208 with DSUB Safety Voltages
Connect only voltages that are within the following limits:
© National Instruments 3
NI-9208 Getting Started
Isolation
Channel-to-channel None
Channel-to-earth ground
Continuous 60 V DC, Measurement Category I
Withstand, up to 2,000 m 1,000 V RMS, verified by a 5 s dielectric withstand test
Safety Guidelines for Hazardous Locations
The NI-9208 is suitable for use in hazardous locations; , and hazardous locations;
and nonhazardous locations only. Follow these guidelines if you are installing the
NI-9208 in a potentially explosive environment. Not following these guidelines may
result in serious injury or death.
Caution Do not disconnect I/O-side wires or connectors unless power has
been switched o or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched o or
the area is known to be nonhazardous.
Caution Substitution of components may impair suitability for Class I,
Division 2, or Zone 2.
Caution The system must be installed in an enclosure certified for the
intended hazardous (classified) location, having a tool secured cover/door,
where a minimum protection of at least IP54 is provided.
Special Conditions for Hazardous Locations Use in Europe and
Internationally
The NI-9208 with spring terminal has been evaluated as equipment under DEMKO
ATEX and is IECEx certified. The NI-9208 with DSUB has been evaluated as
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NI-9208 Getting Started
equipment under DEMKO ATEX and is IECEx certified. Each NI-9208 is marked and is
suitable for use in Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤
Ta ≤ 70 °C. If you are using the NI-9208 in Gas Group IIC hazardous locations, you
must use the device in an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC
T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
Caution Transient protection shall be provided that is set at a level not
exceeding 140% of the peak rated voltage value of 85 V at the supply
terminals to the equipment.
Caution The system shall only be used in an area of not more than
Pollution Degree 2, as defined in IEC/EN 60664-1.
Caution The system shall be mounted in an ATEX/IECEx-certified
enclosure with a minimum ingress protection rating of at least IP54 as
defined in IEC/EN 60079-15.
Caution The enclosure must have a door or cover accessible only by the
use of a tool.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits
for electromagnetic compatibility (EMC) stated in the product specifications. These
requirements and limits provide reasonable protection against harmful interference
when the product is operated in the intended operational electromagnetic
environment.
This product is intended for use in industrial locations. However, harmful
interference may occur in some installations, when the product is connected to a
peripheral device or test object, or if the product is used in residential or
commercial areas. To minimize interference with radio and television reception and
prevent unacceptable performance degradation, install and use this product in strict
accordance with the instructions in the product documentation.
© National Instruments 5
NI-9208 Getting Started
Furthermore, any changes or modifications to the product not expressly approved
by National Instruments could void your authority to operate it under your local
regulatory rules.
Special Conditions for Marine Applications
Some products are approved for marine (shipboard) applications. To verify marine
approval certification for a product, visit ni.com/product-certifications, search by
model number, and click the appropriate link.
Notice In order to meet the EMC requirements for marine applications,
install the product in a shielded enclosure with shielded and/or filtered
power and input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes and cables to
ensure that the desired EMC performance is attained.
Preparing the Environment
Ensure that the environment in which you are using the NI-9208 meets the following
specifications.
Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C
Operating humidity (IEC 60068-2-78) 10% RH to 90% RH, noncondensing
Pollution Degree 2
Maximum altitude
For NI-9208 with spring terminal 4,000 m
For NI-9208 with DSUB 2,000 m
Indoor use only.
Note Refer to the device datasheet on ni.com/manuals for complete
specifications.
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NI-9208 Getting Started
NI 9208 with Spring Terminal Pinout
COM
AI14
AI12
AI10
AI8
AI6
AI4
AI2
AI0
COM
AI15
AI13
AI11
AI9
AI7
AI5
AI3
AI1
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
Vsup
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
26
27
28
29
30
31
32
33
34
35
36
Table 1. Signal Descriptions
Signal Description
AI Analog input signal connection
COM Common reference connection to isolated ground
Vsup Voltage supply connection
Connecting an External Power Supply
You can connect an external power supply to the NI-9208. This power supply
provides the current for the devices you connect to the module. Connect the
positive lead of the power supply to a Vsup pin and the negative lead of the power
supply to COM. Install a 2 A maximum, fast-acting fuse between the external power
supply and the Vsup pin.
Note The Vsup pins are internally connected to each other. You can
connect only one external voltage supply to the device.
© National Instruments 7
NI-9208 Getting Started
Caution Do not remove or insert modules if the external power supply
connected to the Vsup and COM pins is powered on.
Connecting a Loop-Powered Current Transducer
NI 9208
+
–
AI0
External
Power
Supply
Loop-Powered
Current
Transducer
Vsup
COM
Vsup
2 A
Max
Connecting a Three-Wire Current Transducer
NI 9208
Vsup
COM
+
–
COM
Vsup
AI0
External
Power
Supply
Three-Wire
Current
Transducer
2 A
Max
OUT
+
–
NI-9208 Connection Guidelines
■ Make sure that devices you connect to the NI-9208 are compatible with the
module specifications.
■ You must use 2-wire ferrules to create a secure connection when connecting
more than one wire to a single terminal on the NI-9208 with spring terminal.
■ Push the wire into the terminal when using a solid wire or a stranded wire
with a ferrule.
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NI-9208 Getting Started
■ Open the terminal by pressing the push button when using stranded wire
without a ferrule.
High-Vibration Application Connections
If your application is subject to high vibration, NI recommends that you use the
NI-9940 backshell kit to protect connections to the NI-9208 with spring terminal.
Overvoltage Protection
The NI-9208 provides overvoltage protection for each channel.
Note Refer to the NI-9208 Specifications on ni.com/manuals for more
information about overvoltage protection.
Where to Go Next
CompactRIO NI CompactDAQ
Located at ni.com/manuals
RELATED INFORMATION
C Series Documentation
& Resources
ni.com/info cseriesdoc
Services
ni.com/services
Installs with the software
NI 9208 Datasheet
NI-RIO Help
LabVIEW FPGA Help
NI 9208 Datasheet
NI-DAQmx Help
LabVIEW Help
NI Services
Visit ni.com/support to find support resources including documentation,
downloads, and troubleshooting and application development self-help such as
tutorials and examples.
© National Instruments 9
NI-9208 Getting Started
Visit ni.com/services to learn about NI service oerings such as calibration options,
repair, and replacement.
Visit ni.com/register to register your NI product. Product registration facilitates
technical support and ensures that you receive important information updates from
NI.
NI corporate headquarters is located at 11500 N Mopac Expwy, Austin, TX,
78759-3504, USA.
ni.com
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NI-9208 Getting Started
© 2022 National Instruments Corporation.
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