National Instruments NI 9264 Manuel utilisateur
GETTING STARTED GUIDE
NI 9264
16 AO, ±10 V, 16 Bit, 25 kS/s/ch Simultaneous
This document explains how to connect to the NI 9264. In this
document, the NI 9264 with spring terminal and the NI 9264 with
DSUB are referred to inclusively as the NI 9264.
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 9264. 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.
Caution Electrostatic Discharge (ESD) can damage
the NI 9264 with spring terminal. To prevent damage,
use industry-standard ESD prevention measures during
installation, maintenance, and operation.
Safety Guidelines
Operate the NI 9264 only as described in this document.
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Caution Do not operate the NI 9264 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.
Hazardous Voltage This icon denotes a warning
advising you to take precautions to avoid electrical
shock.
Safety Guidelines for Hazardous Voltages
You can connect hazardous voltages only to the
NI 9264 with spring terminal. Do not connect hazardous voltages
to the NI 9264 with DSUB.
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.
NI 9264 Getting Started Guide | © National Instruments | 3
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.
Note 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. You must use
the NI 9940 connector backshell kit with the
NI 9264 with spring terminal to ensure that the
terminals are not accessible.
Safety Voltages
Connect only voltages that are within the following limits:
NI 9264 with Spring Terminal Isolation Voltages
Channel-to-channel None
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Channel-to-earth ground
Continuous 250 Vrms,
Measurement Category II
Withstand up to
4,000 m
3,000 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.
Caution Do not connect the
NI 9264 with spring terminal to signals or use for
measurements within Measurement Categories III or
IV.
NI 9264 with DSUB Isolation Voltages
Isolation
Channel-to-channel None
NI 9264 Getting Started Guide | © National Instruments | 5
Channel-to-earth ground
Continuous 60 VDC, Measurement
Category I
Withstand up to
2,000 m
1,000 Vrms, verified by a 5 s
dielectric withstand test
Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live
electrical supply system that powers equipment. This category is
for measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered
by regulated low-voltage sources, and electronics.
Caution Do not connect the NI 9264 with DSUB to
signals or use for measurements within Measurement
Categories II, III, or IV.
Note Measurement Categories CAT I and CAT O are
equivalent. These test and measurement circuits are not
intended for direct connection to the MAINS building
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installations of Measurement Categories CAT II,
CAT III, or CAT IV.
Safety Guidelines for Hazardous Locations
The NI 9264 is suitable for use in Class I, Division 2, Groups A,
B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4
and Ex nA IIC T4 hazardous locations; and nonhazardous
locations only. Follow these guidelines if you are installing the
NI 9264 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 off or the
area is known to be nonhazardous.
Caution Do not remove modules unless power has
been switched off or the area is known to be
nonhazardous.
Caution Substitution of components may impair
suitability for Class I, Division 2.
Caution For Division 2 and Zone 2 applications,
install the system in an enclosure rated to at least IP54
as defined by IEC/EN 60079-15.
NI 9264 Getting Started Guide | © National Instruments | 7
Caution For Division 2 and Zone 2 applications,
connected signals must be within the following limits.
Capacitance 0.2 µF maximum
Special Conditions for Hazardous Locations Use in
Europe and Internationally
The NI 9264 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO 07 ATEX 0626664X and is IECEx UL 14.0089X
certified. Each NI 9264 is marked II 3G 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 9264 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 You must make sure that transient
disturbances do not exceed 140% of the rated voltage.
Caution The system shall only be used in an area of
not more than Pollution Degree 2, as defined in
IEC/EN 60664-1.
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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
NI 9264 Getting Started Guide | © National Instruments | 9
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