National Instruments NI 9229 Manuale utente
GETTING STARTED GUIDE
NI 9229
4 AI, ±60 V, 24 Bit, 50 kS/s/ch Simultaneous
This document explains how to connect to the NI 9229.
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 9229. 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 9229 only as described in this document.
Caution Do not operate the NI 9229 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 9229 Getting Started Guide
Hazardous Voltage This icon denotes a warning
advising you to take precautions to avoid electrical
shock with the NI 9229 with screw terminal.
NI 9229 with Screw Terminal Safety Voltages
Connect only voltages that are within the following limits:
Isolation
Channel-to-channel
Continuous 250 Vrms, Measurement
Category II
Withstand 1,390 V, verified by a 5 s
dielectric withstand test
Channel-to-earth ground
Continuous 250 Vrms, Measurement
Category II
Withstand 2,300 V, verified by a 5 s
dielectric withstand test
NI 9229 Getting Started Guide | © National Instruments | 3
Division 2 and Zone 2
hazardous locations
applications1
60 VDC, Measurement
Category I
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.
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
installations of Measurement Categories CAT II,
CAT III, or CAT IV.
Caution If using in Division 2 or Zone 2 hazardous
locations applications, do not connect the NI 9229 with
1Channel-to-channel and channel-to-earth ground
4| ni.com | NI 9229 Getting Started Guide
screw terminal to signals or use for measurements
within Measurement Categories II, III, or IV.
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 9229 with screw
terminal to signals or use for measurements within
Measurement Categories III or IV.
NI 9229 with BNC Safety Voltages
Connect only voltages that are within the following limits:
Isolation
Channel-to-channel
Continuous 60 VDC, Measurement
Category I
Withstand 1,000 V, verified by a 5 s
dielectric withstand test
NI 9229 Getting Started Guide | © National Instruments | 5
Channel-to-earth ground
Continuous 60 VDC, Measurement
Category I
Withstand 1,000 V, 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.
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
installations of Measurement Categories CAT II,
CAT III, or CAT IV.
6| ni.com | NI 9229 Getting Started Guide
Caution Do not connect the NI 9229 with BNC to
signals or use for measurements within Measurement
Categories II, III, or IV.
Safety Guidelines for Hazardous Voltages
You can connect hazardous voltages only to the
NI 9229 with screw terminal. Do not connect hazardous voltages
to the NI 9229 with BNC.
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
NI 9229 Getting Started Guide | © National Instruments | 7
that devices and circuits connected to the module are
properly insulated from human contact. You must use
the NI 9971 connector backshell kit to ensure that the
terminals are not accessible.
Safety Guidelines for Hazardous Locations
The NI 9229 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 9229 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.
8| ni.com | NI 9229 Getting Started Guide
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.
Caution For Division 2 and Zone 2 applications,
install a protection device between the input signal and
the input terminal. The device must clamp all voltage
sources to no more than 40% above their rated value or
within 84 VDC to earth ground if there is a transient
overvoltage condition.
Caution For Division 2 and Zone 2 applications,
connected voltage sources must be within 60 VDC to
earth ground.
Caution For Division 2 and Zone 2 applications,
connected signals must be within the following limits.
Capacitance 0.01 μF max
Special Conditions for Hazardous Locations Use in
Europe and Internationally
The NI 9229 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO Certificate No. 07 ATEX 0626664X and is
NI 9229 Getting Started Guide | © National Instruments | 9
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