NI 9247 Manuel utilisateur
GETTING STARTED GUIDE
NI 9247
3-Channel, 50 Arms Continuous, 24-Bit, Analog
Input Module
This document explains how to connect to the NI 9247.
Note Before you begin, complete the software and
hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to
the NI 9247. 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
Operate the NI 9247 only as described in this document.
Caution Do not operate the NI 9247 in a manner not
specified in this document. Product misuse can result in
a hazard. You can compromise the safety protection
built into the product if the product is damaged in any
way. If the product is damaged, return it to NI for
repair.
2| ni.com | NI 9247 Getting Started Guide
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the device, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 Vpk voltage or 60 VDC to earth ground.
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
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 VDC), you must ensure
that devices and circuits connected to the module are
properly insulated from human contact.
NI 9247 Getting Started Guide | © National Instruments | 3
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
4| ni.com | NI 9247 Getting Started Guide
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
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for
U.S. or 230 V for Europe.
Measurement Category III is for measurements performed in the
building installation at the distribution level. This category refers
to measurements on hard-wired hardware such as hardware in
fixed installations, distribution boards, and circuit breakers. Other
examples are wiring, including cables, bus bars, junction boxes,
switches, socket outlets in the fixed installation, and stationary
motors with permanent connections to fixed installations.
Caution Do not connect the NI 9247 to signals or use
for measurements within Measurement Category IV.
NI 9247 Getting Started Guide | © National Instruments | 5
Caution The NI 9247 ships with a connector
backshell to ensure that the terminals are not
accessible. Do not operate the device without first
installing this backshell.
6| ni.com | NI 9247 Getting Started Guide
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.
8| ni.com | NI 9247 Getting Started Guide
Special Conditions for Marine Applications
Some products are Lloyd’s Register (LR) Type Approved for
marine (shipboard) applications. To verify Lloyd’s Register
certification for a product, visit ni.com/certification and search
for the LR certificate, or look for the Lloyd’s Register mark on
the product.
Caution 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.
NI 9247 Getting Started Guide | © National Instruments | 9
Preparing the Environment
Ensure that the environment in which you are using the NI 9247
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 5,000 m
Indoor use only.
Note Refer to the device datasheet on ni.com/manuals
for complete specifications.
Connecting the NI 9247
The NI 9247 provides connection for three analog input channels.
10 | ni.com | NI 9247 Getting Started Guide
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