National Instruments NI 9246 Bedienungsanleitung
NI-9246 Getting
Started
2022-07-06
Contents
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connecting the NI 9246. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connecting Cables Using Ring Lug Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installing the NI 9246 Backshell. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Connecting Phase Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
High-Vibration Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ni.com
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NI-9246 Getting Started
Overview
This document explains how to connect to the NI 9246.
Note Before you begin, read the NI 9246 Safety, Environmental, and
Regulatory Information document on ni.com/manuals and complete the
soware and hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to the NI 9246. The
other components in the system might not meet the same safety ratings.
Refer to the documentation for each component in the system to
determine the safety and EMC ratings for the entire system.
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.
Safety Guidelines for Hazardous Voltages
Caution Ensure that hazardous voltage wiring is performed only by
qualified personnel adhering to local electrical standards.
© National Instruments 3
NI-9246 Getting Started
Caution Do not mix hazardous voltage circuits and human-accessible
circuits on the same module.
Caution Ensure that devices and circuits connected to the module are
properly insulated from human contact.
Caution When module terminals are hazardous voltage LIVE (>42.4 Vpk/60
V DC), you must ensure that devices and circuits connected to the module
are properly insulated from human contact.
Safety Voltages
Connect only voltages that are within the following limits:
Maximum working voltage, channel-to-earth ground
Continuous
Up to 2,000 m altitude 300 Vrms, Measurement Category III
Up to 5,000 m altitude 150 Vrms, Measurement Category III or 300 Vrms, Measurement
Category II
Maximum working voltage, channel-to-channel
Continuous
Up to 2,000 m altitude 480 Vrms, Measurement Category III
Up to 5,000 m altitude 300 Vrms, Measurement Category III or 480 Vrms, Measurement
Category II
Withstand
Channel-to-channel 3510 Vrms, verified by a 5 s dielectric withstand test
Channel-to-earth ground 3510 Vrms, verified by a 5 s dielectric withstand test
ni.com
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NI-9246 Getting Started
Caution The NI 9246 ships with a connector backshell to ensure that the
terminals are not accessible. Do not operate the device without first
installing this backshell.
Figure 1. NI 9246 with Backshell
Related concepts
■Installing the NI 9246 Backshell
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.
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.
© National Instruments 5
NI-9246 Getting Started
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 9246 meets the following
specifications.
Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C
Operating humidity (IEC 60068-2-30) 10% RH to 90% RH, noncondensing
Pollution Degree 2
Maximum altitude 5,000 m
Indoor use only.
Note Refer to the NI 9246 Specifications on ni.com/manuals for
complete specifications.
Connecting the NI 9246
The NI 9246 provides connection for three analog input channels.
ni.com
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NI-9246 Getting Started
Figure 2. NI 9246 Pinout
AI0+
AI1+
AI2+
AI1-
AI0-
AI2-
Note The NI 9246 does not measure DC currents.
Caution Connecting a DC current source to the NI 9246 outside of the
specifications stated in the NI 9246 Datasheet may lead to invalid
measurements. Refer to the datasheet on ni.com/manuals for the NI 9246
specifications.
Connecting Cables Using Ring Lug Connectors
Complete the following steps to connect cables using ring lug connectors. Use 5.26
mm2 (10 AWG) cables.
© National Instruments 7
NI-9246 Getting Started
Figure 4. Installing Cables
1
2
1. Align the cables with the device terminals.
2. Secure the cables using the ring lug screws. Tighten the screws to 1.36 N · m
(12 lb · in.) torque.
Installing the NI 9246 Backshell
Complete the following steps to install the NI 9246 backshell.
Figure 4. Connector Backshell Installation
1
2
1. Align the backshell components with the device terminals.
2. Secure the backshell using the captive screws. Tighten to 0.45 N · m (4 lb · in.)
torque.
ni.com
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NI-9246 Getting Started
Connecting Phase Measurements
You can connect three-phase measurement configurations and single-phase
measurement configurations to the NI 9246.
You can connect a current source to the NI 9246 for single-phase measurements. For
grounded current sources, connect to the chassis ground.
Figure 5. Connecting a Grounded or Floating Current Source
NI 9246
AI–
AI+
For three-phase measurements, connect three current sources to the NI 9246.
High-Vibration Applications
Proper strain relief of 5.26 mm2 (10 AWG) cable is required to meet the shock and
vibration performance specifications stated in the NI 9246 Datasheet on ni.com/
manuals. Strain relieve all cabling as close to the chassis mounting plate as possible
to reduce the stresses exerted on the module. Ensure that you do not directionally
bias the module when applying strain relief.
Where to Go Next
Located at ni.com/manuals Installs with the software
CompactRIO NI CompactDAQ
RELATED INFORMATION
NI 9246 Datasheet
NI-RIO Help
LabVIEW FPGA Help
NI 9246 Datasheet
NI-DAQmx Help
LabVIEW Help
C SeriesDocumentation
& Resources
ni.com/info cseriesdoc
Servi ces
ni.com/services
© National Instruments 9
NI-9246 Getting Started
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.
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
10
NI-9246 Getting Started
© 2022 National Instruments Corporation.
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