National Instruments 9792 User manual

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USER GUIDE AND SPECIFICATIONS
NI 9792 WSN Real-Time Gateway
This user guide describes how to use the NI 9792 Wireless Sensor Network Real-Time Gateway and lists
specifications. The NI 9792 WSN Real-Time Gateway combines with NI WSN-32xx nodes to form a
wireless sensor network. Figure 1 shows the NI WSN system components.
Figure 1. NI WSN System Components
1 PC or NI Real-Time Hardware Running
Application Software
2 NI 9792 WSN Real-Time Gateway
3 9–35 VDC Power Supply Connection
4 NI WSN-32xx Nodes
5 Ethernet Cable/Connection
5
4
3
4
2
1

NI 9792 WSN Real-Time Gateway User Guide and Specifications 2 ni.com
The NI 9792 WSN Real-Time Gateway is shown in Figure 2.
Figure 2. NI 9792 WSN Real-Time Gateway

NI 9792 WSN Real-Time Gateway User Guide and Specifications 3 ni.com
Dimensions
Figure 3 shows the NI 9792 WSN Real-Time Gateway device dimensions.
Figure 3. NI 9792 WSN Real-Time Gateway Device Dimensions
Safety Guidelines
Operate the NI 9792 WSN Real-Time Gateway only as described in this user guide.
Hot Surface This icon denotes that the component may be hot. Touching this component may result
in bodily injury.
NI WSN Safety Information
The following section contains important safety information that you must follow when installing and
using NI WSN products.
Caution Do not substitute parts or modify the NI WSN product. Use the product only with the
devices, accessories, and cables specified in the installation instructions.
Caution Do not operate a NI WSN products in an explosive atmosphere or where there may be
flammable gases or fumes. If you need to operate NI WSN products in such an environment, the
NI WSN products must be in a suitably rated enclosure.
Caution If you need to clean a NI WSN product, use a dry towel. The product must be completely
dry and free from contaminants before you return it to service.
87.56 mm
(3.447 in.)
83mm
(3.268 in.)
170.55 mm
(6.715 in.)
86.25 mm
(3.396 in.)
43.47 mm
(1.712 in.)
91.38 mm
(3.598 in.)
124.84 mm
(4.915 in.)
95.63mm
(3.765 in.)
170.55 mm
(6.715 in.)

NI 9792 WSN Real-Time Gateway User Guide and Specifications 4 ni.com
Caution Operate the product only at or below Pollution Degree 2. Pollution is foreign matter in a
solid, liquid, or gaseous state that can reduce dielectric strength or surface resistivity. The following
is a description of pollution degrees:
• Pollution Degree 1 means no pollution or only dry, nonconductive pollution occurs. The pollution
has no influence.
• Pollution Degree 2 means that only nonconductive pollution occurs in most cases. Occasionally,
however, a temporary conductivity caused by condensation must be expected.
• Pollution Degree 3 means that conductive pollution occurs, or dry, nonconductive pollution occurs
which becomes conductive due to condensation.
Caution You must insulate signal connections for the maximum voltage for which the NI WSN
product is rated. Do not exceed the maximum ratings for the product. Do not install wiring while
the product is live with electrical signals. Do not remove or add connector blocks when power is
connected to the NI WSN system. Avoid contact between your body and the connector block signal
wiring when hot-swapping devices.
Operate NI WSN products at or below the installation category1marked on the hardware label.
Measurement circuits are subjected to working voltages2and transient stresses (overvoltage) from
the circuit to which they are connected during measurement or test. Installation categories establish
standard impulse withstand voltage levels that commonly occur in electrical distribution systems.
The following is a description of installation categories:
• Installation Category I is for measurements performed on circuits not directly connected to the
electrical distribution system referred to as MAINS3voltage. 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.
• Installation 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). Examples
of Installation Category II are measurements performed on household appliances, portable tools,
and similar products.
• Installation Category III is for measurements performed in the building installation at the
distribution level. This category refers to measurements on hard-wired equipment such as
equipment 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.
• Installation Category IV is for measurements performed at the primary electrical supply
installation (<1,000 V). Examples include electricity meters and measurements on primary
overcurrent protection devices and on ripple control units.
Safety Guidelines for Hazardous Locations
The NI 9792 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 nA IIC T4 hazardous locations; and nonhazardous locations
only. Not following these guidelines may result in serious injury or death.
1 Installation categories, also referred to as measurement categories, are defined in electrical safety standard IEC 61010-1.
2 Working voltage is the highest rms value of an AC or DC voltage that can occur across any particular insulation.
3 MAINS is defined as a hazardous live electrical supply system that powers equipment. Suitably rated measuring circuits may
be connected to the MAINS for measuring purposes.

NI 9792 WSN Real-Time Gateway User Guide and Specifications 5 ni.com
Caution Do not disconnect the power supply wires and connectors from the controller unless power
has been switched off.
Caution Do not install or remove the controller unless power has been switched off.
Caution Substitution of components may impair suitability for Class I, Division 2.
Caution For Zone 2 applications, install the WSN system in an enclosure rated to at least IP 54 as
defined by IEC 60529 and EN 60529.
Special Conditions for Hazardous Locations Use in Europe
The NI 9792 has been evaluated as Ex nA nL IIC T4 equipment under DEMKO Certificate No. 07
ATEX 0626664X. Each controller is marked II 3G and is suitable for use in Zone 2 hazardous locations,
in ambient temperatures of –40 °C ≤Ta ≤70 °C.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits for electromagnetic
compatibility (EMC) as stated in the product specifications. These requirements and limits are designed
to provide reasonable protection against harmful interference when the product is operated in its
intended operational electromagnetic environment.
This product is intended for use in industrial locations. There is no guarantee that harmful interference
will not occur in a particular installation, when the product is connected to a test object, or if the product
is used in residential areas. To minimize the potential for the product to cause interference to radio and
television reception or to experience 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.
The following statements contain important EMC information needed before installing and using this
product:
Caution This product is intended for use in industrial locations. As a result, this product may cause
interference if used in residential areas. Such use must be avoided unless the user takes special
measures to reduce electromagnetic emissions to prevent interference to the reception of radio and
television broadcasts.
Caution Changes or modifications not expressly approved by National Instruments could void the
your authority to operate the hardware under the local regulatory rules.
Caution Operate this product only with shielded cables and accessories.
Related Documentation
Check ni.com/manuals for the most recent hardware documentation. For a complete list of
documentation related to the NI WSN system, refer to ni.com/info and enter rdwsnrd.
In addition to this guide, the following documents may be useful when configuring your NI WSN
system.
• NI Wireless Sensor Network Getting Started Guide
• NI WSN-32xx User Guide and Specifications

NI 9792 WSN Real-Time Gateway User Guide and Specifications 6 ni.com
•Configuring WSN in MAX, available by selecting Start»All Programs»National Instruments»
NI-WSN
• The NI-WSN book on the Contents tab of the LabVIEW Help available by selecting Help»Search
the LabVIEW Help in LabVIEW
•NI-WSN Readme, available on the software installation disc included with your device.
Training Courses
If you need more help getting started developing an application with NI products, NI offers training
courses. To enroll in a course or obtain a detailed course outline, refer to ni.com/training.
Technical Support on the Web
For additional support, refer to ni.com/support or zone.ni.com.
Software Overview
Note Refer to the NI WSN Readme, available on the software installation disc included with your
device, for NI software application version support.
The NI-WSN software includes NI Measurement and Automation Explorer (MAX) as well as server and
driver software for easy integration into application software packages. These software components
manage the low-level communications and hardware details, simplifying programmatic access to
I/O channels. The NI-WSN software is on the software installation disc included with your
NI 9792 WSN gateway device. The NI-WSN software is supported by Windows 7/Vista/XP and
contains the following components:
•NIMAX
• NI-WSN software
You can download a current version of the NI-WSN software from ni.com/support. Using your Web
browser, go to ni.com/support and select Drivers and Updates»Distributed I/O»Wireless Sensor
Networks, and then select the latest version of NI-WSN software. If you are using other software, refer
to the installation instructions that accompany your software.
What You Need to Get Started
To set up and use NI LabVIEW Real-Time with the NI 9792 WSN Real-Time Gateway, you need the
following:
• NI 9792 WSN Real-Time Gateway device(s), with 9–35 V power supply
•NIWSN-32xx node devices, 9–30 V power supply, or four 1.5 V AA batteries for each node
• Mounting hardware (DIN rail or panel-mount)
• Ethernet cable/connection
• 1/8 in. flathead and number 1 Phillips screwdrivers
• NI-WSN 1.1 software or later
• Host PC running Windows 7/Vista/XP
• NI LabVIEW 2009 SP1 (32-bit) or later
• NI LabVIEW Real-Time 2009 SP1 (32-bit) or later
• Related hardware and software documentation

NI 9792 WSN Real-Time Gateway User Guide and Specifications 7 ni.com
• Optional accessories
– DIN rail terminal blocks
– I/O cables and sensors
– Mounting accessory
Unpack the Devices and Install the Antenna
Remove the devices from the package and inspect them. Contact NI if the devices appear damaged. Do
not install a damaged device.
Caution The device is static sensitive. Always properly ground yourself and the equipment when
handling or connecting to the device.
To attach the antenna, align it with the mount, as shown in Figure 4, and screw it on.
Caution The antenna must be attached to the NI WSN device in order for the NI WSN device to
function correctly.
Figure 4. Attach Antenna to Device

NI 9792 WSN Real-Time Gateway User Guide and Specifications 8 ni.com
Mounting the NI 9792 Device
You can mount the NI 9792 device on a panel, a 35 mm DIN rail, in an enclosure, or on a desktop. Use
the DIN-Rail mounting method if you already have a DIN rail configuration or if you need to be able to
quickly remove the device. Use the panel mount method for high shock and vibration applications. Use
an enclosure for harsh, dirty, or wet environments. For kit accessory ordering information, refer to the
accessory section of the NI WSN product page at ni.com.
Caution If the ambient temperature is above 60 °C, you must mount the NI 9792 on a thermally
conductive material. Measure the ambient temperature at each side of the NI 9792, 63.5 mm (2.5 in.)
from the side, and 25.4 mm (1 in.) from the back of the system.
Caution Your installation must meet the following requirements:
• Allows 25.4 mm (1 in.) of clearance above and below the NI 9792 device for air circulation.
•Allows 50.8 mm (2 in.) of clearance in front of the device for common connector cabling, such
as the 4-position detachable screw terminal connector.
Note Figure 5 is an actual size template. You can print it out and use it to determine screw hole
placement for panel mounting.

NI 9792 WSN Real-Time Gateway User Guide and Specifications 9 ni.com
Figure 5. NI 9792 Panel Mount Dimensions Template
114.3mm
(4.500 in.)
45.69 mm
(1.799 in.)
55.91 mm
(2.201 in.)
101.6 mm
(4.000 in.)