National Instruments NI 9215 Manuale utente
OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9215
4-Channel, ±10 V, 16-Bit Simultaneous Analog
Input Module
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NI 9215 Operating Instructions and Specifications 2 ni.com
This document describes how to use the National Instruments 9215
and includes specifications and terminal assignments for the
NI 9215. In this document, the NI 9215 with screw terminal and
NI 9215 with BNC are referred to inclusively as the NI 9215. Visit
ni.com/info and enter rdsoftwareversion to determine
which software youneed for the modules youare using. For
information about installing, configuring, and programming the
system, refer to the system documentation. Visit ni.com/info
and enter cseriesdoc for information about C Series
documentation.
Note The safety guidelines and specifications in this
document are specific to the NI 9215. The other
components in the system might not meet the same safety
ratings and specifications. Refer to the documentation for
each component in the system to determine the safety
ratings and specifications for the entire system. Visit
ni.com/info and enter cseriesdoc for information
about C Series documentation.
Safety Guidelines
Operate the NI 9215 only as described in these operating
instructions.
© National Instruments Corp. 3 NI 9215 Operating Instructions and Specifications
Hot Surface This icon denotes that the component may be
hot. Touching this component may result in bodily injury.
Safety Guidelines for Hazardous Voltages
Yo ucan connect hazardous voltages only to the NI 9215 with
screw terminal. Do not connect hazardous voltages to the NI 9215
with BNC.
If hazardous voltages are connected to the module, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 Vpk 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 Make sure 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), youmust ensure that devices
NI 9215 Operating Instructions and Specifications 4 ni.com
and circuits connected to the module are properly
insulated from human contact. Youmust use the NI 9932
connector backshell kit to ensure that the terminals are
not accessible.
Figure 1 shows the NI 9932 connector backshell.
Note Youcan use the NI 9932 connector backshell only
with the NI 9215 with screw terminal.
Figure 1. NI 9932 Connector Backshell
© National Instruments Corp. 5 NI 9215 Operating Instructions and Specifications
Safety Guidelines for Hazardous Locations
The NI 9215 is suitable for use in Class I, Division 2, Groups A, B,
C, D, and T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4
and Ex nC IIC T4 hazardous locations; and nonhazardous locations
only. Follow these guidelines if youare installing the NI 9215 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 Zone 2 applications, install the system
in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.
NI 9215 Operating Instructions and Specifications 6 ni.com
Caution For Zone 2 applications, connected signals must
be within the following limit:
Capacitance .......................... 0.2 μF max
Special Conditions for Hazardous Locations Use in Europe
This equipment has been evaluated as EEx nC IIC T4 equipment
under DEMKO Certificate No. 03 ATEX 0324020X. Each module
is marked II 3G and is suitable for use in Zone 2 hazardous
locations. If youare using the NI 9215 in Gas Group IIC hazardous
locations or in ambient temperatures of –40 °C ≤Ta ≤70 °C, you
must use the device in an NI chassis that has been evaluated as
Ex nA IIC T4 equipment.
Special Conditions for Marine Applications
Some modules are Lloyd’s Register (LR) Type Approved for
marine applications. To verify Lloyd’s Register certification, go
to ni.com/certification and search for the LR certificate,
or look for the Lloyd’s Register mark on the module.
© National Instruments Corp. 7 NI 9215 Operating Instructions and Specifications
Caution To meet radio frequency emission requirements
for marine applications, use shielded cables and install
the system in a metal enclosure. Suppression ferrites
must be installed on power supply inputs near power
entries to modules and controllers. Power supply and
module cables must be separated on opposite sides of
the enclosure, and must enter and exit through opposing
enclosure walls.
NI 9215 Operating Instructions and Specifications 8 ni.com
Connecting the NI 9215
The NI 9215 provides connections for four differential analog
input channels.
Figure 2. Terminal Assignments of the NI 9215 with Screw Terminal
0
1
2
3
4
5
6
7
8
9
AI0+
AI0–
AI1+
AI1–
AI2+
AI2–
AI3+
AI3–
NC
COM
© National Instruments Corp. 9 NI 9215 Operating Instructions and Specifications
Figure 3. Connector Assignments of the NI 9215 with BNC
AI3+
AI3–
AI2+
AI2–
AI0+
AI0–
AI1+
AI1–
NI 9215 Operating Instructions and Specifications 10 ni.com
The NI 9215 with screw terminal has a 10-terminal detachable
screw-terminal connector. The NI 9215 with BNC has four BNC
connectors.
Each channel of the NI 9215 has an AI+ terminal or shield to which
youcan connect the positive voltage signal, and an AI– terminal or
shield to which youcan connect the negative voltage signal. The
NI 9215 with screw terminal also has a common terminal, COM,
that is internally connected to the isolated ground reference of the
module.
Note Youmust use 2-wire ferrules to create a secure
connection when connecting more than one wire to a
single terminal on the NI 9215 with screw terminal.
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