OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9265
4-Channel, 0–20 mA, 16-Bit Analog Current Output
Module
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Hot Surface This icon denotes that the component may be
hot. Touching this component may result in bodily injury.
Safety Guidelines for Hazardous Voltages
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), you must ensure that devices
and circuits connected to the module are properly
insulated from human contact. You must use the NI 9932
connector backshell kit to ensure that the terminals are
not accessible.
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Figure 1 shows the NI 9932 connector backshell.
Figure 1. NI 9932 Connector Backshell
Safety Guidelines for Hazardous Locations
The NI 9265 is suitable for use in Class I, Division 2, Groups A, B,
C, D, 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 you are installing the NI 9265 in a
potentially explosive environment. Not following these guidelines
may result in serious injury or death.
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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.
Caution For Zone 2 applications, connected signals must
be within the following limits:
Capacitance..........................80 nF max
Inductance............................0.2 H max
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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 you are using the NI 9265 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
EEx nC IIC T4, Ex nA IIC T4, or Ex nL 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, visit
ni.com/certification and search for the LR certificate, or
look for the Lloyd’s Register mark on the module.
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.
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Connecting the NI 9265
The NI 9265 has a 10-terminal, detachable screw-terminal
connector that provides connections for 4 analog output channels.
AO0
COM0
AO1
COM1
AO2
COM2
AO3
COM3
Vsup
Power Supply COM
0
1
2
3
4
5
6
7
8
9
Figure 2. NI 9265 Terminal Assignments
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The NI 9265 has four analog output channels, AO. Each channel
has a common terminal, COM, that is internally connected to the
isolated ground reference of the module. The 9265 also has a
terminal for an external power supply, Vsup, and an external power
supply common terminal, Power Supply COM.
Each AO channel has a digital-to-analog converter (DAC) that
produces a current signal. Each channel also has overvoltage and
short-circuit protection. Refer to the Specifications section for
more information about the overvoltage and short-circuit
protection. Refer to Figure 3 for an illustration of the output
circuitry for one channel of the NI 9265.
You can connect a load to each channel of the NI 9265. Connect the
positive lead of the load to the AO terminal. Connect the ground of
the load to the corresponding COM terminal. Refer to Figure 3 for
an illustration of how to connect a load to the NI 9265.
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External
Power Supply
+
_
Power
Supply
COM
Vsup
DC/DC
Isolated DAC
AO
Protection
Load
COM
NI 9265
Figure 3. Connecting a Load to the NI 9265
Note You must use 2-wire ferrules to create a secure
connection when connecting more than one wire to a
single terminal on the NI 9265.
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You must connect an external power supply to the NI 9265. This
power supply provides the current for the devices you connect to
the module. Connect the positive lead of the power supply to the
supply terminal, Vsup, and the negative lead of the power supply to
Power Supply COM.
When the module powers on, the channels output the startup
current. Refer to the Specifications section for more information
about startup current. Refer to the software help for information
about configuring startup output states in software. Visit
ni.com/info and enter cseriesdoc for information about
C Series documentation.
Wiring for High-Vibration Applications
If an application is subject to high vibration, National Instruments
recommends that you either use ferrules to terminate wires to the
detachable screw-terminal connector or use the NI 9932 backshell
kit to protect the connections. Refer to Figure 4 for an illustration
of using ferrules. Refer to Figure 1 for an illustration of the
NI 9932 connector backshell.
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Figure 4. 10-Terminal Detachable Screw-Terminal Connector with Ferrule
Sleep Mode
This module supports a low-power sleep mode. Support for sleep
mode at the system level depends on the chassis that the module is
plugged into. Refer to the chassis manual for information about
support for sleep mode. If the chassis supports sleep mode, refer to
the software help for information about enabling sleep mode.
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Visit ni.com/info and enter cseriesdoc for information about
C Series documentation.
Typically, when a system is in sleep mode, you cannot
communicate with the modules. In sleep mode, the system
consumes minimal power and may dissipate less heat than it does
in normal mode. Refer to the Specifications section for more
information about power consumption and thermal dissipation.
Specifications
The following specifications are typical for the range –40 to 70 °C
unless otherwise noted. All voltages are relative to COM unless
otherwise noted.
Output Characteristics
Number of channels..........................4 analog output channels
DAC resolution .................................16 bits
Type of DAC.....................................String
Power-on output state .......................0
Startup current ..................................0.0 mA
Power-down current..........................0.0 mA
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Full-scale output current
Minimum....................................20.1 mA
Typical........................................20.6 mA
Maximum ...................................21.0 mA
Output range .....................................0 to 20 mA
Compliance voltage ..........................12 VDC max
Maximum load..................................600 Ω
Accuracy
Percent of
Range*
(Gain Error) (Offset Error)
Percent of
Reading
Measurement Conditions
Calibrated, typ (25 °C, 5 °C)
Calibrated, max (–40 to 70 °C)
Uncalibrated, typ (25 °C, 5 °C)
Uncalibrated, max (–40 to 70 °C)
* Range equals 0 to 20.6 mA
0.11%
0.25%
0.35%
0.85%
0.19%
0.4%
1.4%
2.5%
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Stability
Gain drift ....................................30 ppm/°C
Offset drift ..................................45 ppm/°C
External power supply
voltage range (Vsup) ..........................9–36 VDC
Protection (AO, Vsup
)
Overvoltage ................................ 40 V
Short-circuit................................Indefinitely
Update time
Number of
Channels
Update Time for R Series
Expansion Chassis
Update Time for
Any Other Chassis
One
3.5 μs
6.5 μs
9 μs
3 μs
5 μs
Two
Three
Four
7.5 μs
9.5 μs
12 μs
Noise.................................................600 nArms
Crosstalk ...........................................–90 dB
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Settling time (to 1 LSB)
Full-scale step.............................10 μs
1 mA step ...................................5 μs
Glitch energy ....................................Unmeasurable
Monotonicity.....................................16 bits
DNL..................................................1 LSB max
INL.................................................... 16 LSB
MTBF ...............................................1,014,487 hours at 25 °C;
Bellcore Issue 6, Method 1,
Case 3, Limited Part Stress
Method
Note Contact NI for Bellcore MTBF specifications
at other temperatures or for MIL-HDBK-217F
specifications.
Power Requirements
Power consumption from chassis
Active mode ...............................230 mW max
Sleep mode .................................25 μW max
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Thermal dissipation (at 70 °C)
Active mode ...............................1.5 W max
Sleep mode .................................10 mW max
Power consumption from external power supply
Active mode ...............................1.4 W max
Sleep mode .................................10 mW
Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
Screw-terminal wiring ......................12 to 24 AWG copper
conductor wire with 10 mm
(0.39 in.) of insulation
stripped from the end
Ferrules .............................................0.25 mm2 to 2.5 mm2
Torque for screw terminals ...............0.5 to 0.6 N · m
(4.4 to 5.3 lb · in.)
Weight...............................................136 g (4.8 oz)
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Safety
Maximum Voltage1
Connect only voltages that are within the following limits.
Channel-to-COM or Vsup-to-COM... 40 V max
Isolation Voltages
Channel-to-channel...........................No isolation between
channels
Channel-to-earth ground, Vsup-to-earth ground,
or COM-to-earth ground
Continuous .................................250 Vrms
,
Measurement Category II
Withstand....................................2,300 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
1
The maximum voltage that can be applied between any channel or Vsup terminal
and a COM terminal without damaging the module or other devices.
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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 9265 to signals or use for
measurements within Measurement Categories III or IV.
Safety Standards
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement,
control, and laboratory use:
•
•
IEC 61010-1, EN 61010-1
UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to the
product label or visit ni.com/certification, search
by module number or product line, and click the
appropriate link in the Certification column.
Hazardous Locations
U.S. (UL) ..........................................Class I, Division 2,
Groups A, B, C, D, T4;
Class I, Zone 2,
AEx nC IIC T4
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Canada (C-UL) .................................Class I, Division 2,
Groups A, B, C, D, T4;
Class I, Zone 2,
Ex nC IIC T4
Europe (DEMKO).............................EEx nC IIC T4
Environmental
National Instruments C Series modules are intended for indoor use
only but may be used outdoors if installed in a suitable enclosure.
Refer to the manual for the chassis you are using for more
information about meeting these specifications.
Operating temperature
(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 70 °C
Storage temperature
(IEC 60068-2-1, IEC 60068-2-2) .....–40 to 85 °C
Ingress protection..............................IP 40
Operating humidity
(IEC 60068-2-56)..............................10 to 90% RH,
noncondensing
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Storage humidity
(IEC 60068-2-56)..............................5 to 95% RH,
noncondensing
Maximum altitude.............................2,000 m
Pollution Degree (IEC 60664)..........2
Shock and Vibration
To meet these specifications, you must panel mount the system and
either affix ferrules to the ends of the terminal wires or use the
NI 9932 backshell kit to protect the connections.
Operating vibration
Random (IEC 60068-2-64).........5 grms, 10 to 500 Hz
Sinusoidal (IEC 60068-2-6) .......5 g, 10 to 500 Hz
Operating shock
(IEC 60068-2-27)..............................30 g, 11 ms half sine,
50 g, 3 ms half sine,
18 shocks at 6 orientations
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Electromagnetic Compatibility
This product is designed to meet the requirements of the following
standards of EMC for electrical equipment for measurement,
control, and laboratory use:
•
•
•
EN 61326 EMC requirements; Industrial Immunity
EN 55011 Emissions; Group 1, Class A
CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note For EMC compliance, operate this device with
shielded cabling.
CE Compliance
This product meets the essential requirements of applicable
European directives, as amended for CE markings, as follows:
•
•
2006/95/EC; Low-Voltage Directive (safety)
2004/108/EC; Electromagnetic Compatibility Directive
(EMC)
Note Refer to the Declaration of Conformity (DoC) for
this product for any additional regulatory compliance
information. To obtain the DoC for this product, visit
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ni.com/certification, search by module number or
product line, and click the appropriate link in the
Certification column.
Environmental Management
National Instruments is committed to designing and manufacturing
products in an environmentally responsible manner. NI recognizes
that eliminating certain hazardous substances from our products is
beneficial not only to the environment but also to NI customers.
For additional environmental information, refer to the NI and the
Environment Web page at ni.com/environment. This page
contains the environmental regulations and directives with which
NI complies, as well as other environmental information not
included in this document.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of their life cycle, all products
must be sent to a WEEE recycling center. For more
information about WEEE recycling centers and National
Instruments WEEE initiatives, visit ni.com/
environment/weee.htm.
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ni.com/environment/rohs_chinaDŽ
about China RoHS compliance, go to
environment/rohs_china
(For information
ni.com/
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Calibration
You can obtain the calibration certificate and information about
calibration services for the NI 9265 at ni.com/calibration.
Calibration interval ...........................1 year
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Where to Go for Support
The National Instruments Web site is your complete resource for
technical support. At ni.com/support you have access to
everything from troubleshooting and application development
self-help resources to email and phone assistance from
NI Application Engineers.
National Instruments corporate headquarters is located at
11500 North Mopac Expressway, Austin, Texas, 78759-3504.
National Instruments also has offices located around the world to
help address your support needs. For telephone support in the
United States, create your service request at ni.com/support
and follow the calling instructions or dial 512 795 8248. For
telephone support outside the United States, contact your local
branch office:
Australia 1800 300 800, Austria 43 662 457990-0,
Belgium 32 (0) 2 757 0020, Brazil 55 11 3262 3599,
Canada 800 433 3488, China 86 21 5050 9800,
Czech Republic 420 224 235 774, Denmark 45 45 76 26 00,
Finland 358 (0) 9 725 72511, France 01 57 66 24 24,
Germany 49 89 7413130, India 91 80 41190000,
Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196,
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Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28,
Malaysia 1800 887710, Mexico 01 800 010 0793,
Netherlands 31 (0) 348 433 466, New Zealand 0800 553 322,
Norway 47 (0) 66 90 76 60, Poland 48 22 3390150,
Portugal 351 210 311 210, Russia 7 495 783 6851,
Singapore 1800 226 5886, Slovenia 386 3 425 42 00,
South Africa 27 0 11 805 8197, Spain 34 91 640 0085,
Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151,
Taiwan 886 02 2377 2222, Thailand 662 278 6777,
Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545
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For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software,
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