Rosemount 702 User manual

Quick Start Guide
00825-0200-4702, Rev GD
June 2017
Rosemount™702 Wireless Discrete
Transmitter

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Quick Start Guide
NOTICE
This guide provides basic guidelines for the Rosemount 702. It does not provide instructions for detailed
configuration, diagnostics, maintenance, service, troubleshooting, or installations. Refer to the Rosemount
702 Reference Manual (document number 00809-0200-4702) for more instruction. This guide and the
manual are available electronically on www.rosemount.com.
This device complies with Part 15 of the FCC Rules and operation is subject to the following conditions. The
device may not cause harmful interference. It must accept any interference received, including interference
that may cause undesired operation. This must be installed to ensure a minimum antenna separation
distance of 8-in. (20 cm) from all persons.
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the appropriate
local, national, and international standards, codes, and practices. Review the Product Certifications
section for any restrictions associated with a safe installation.
Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments are installed
in accordance with intrinsically safe or non-incendive field wiring practices.
Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical
shock.
The power module may be replaced in a hazardous area. The power module has surface resistivity greater
than one gigaohm and must be properly installed in the wireless device enclosure. Care must be taken
during transportation to and from the point of installation to prevent electrostatic charge build-up.
Shipping considerations for wireless products.
The unit was shipped to you without the power module installed. Remove the power module prior to
shipping the unit.
Each power module contains two “C” size primary lithium batteries. Primary lithium batteries are regulated
in transportation by the U.S. Department of Transportation, and are also covered by IATA (International Air
Transport Association), ICAO (International Civil Aviation Organization), and ARD (European Ground
Transportation of Dangerous Goods). It is the responsibility of the shipper to ensure compliance with these
or any other local requirements. Consult current regulations and requirements before shipping.
Contents
Wireless considerations . . . . . . . . . . . . . . . . . . . 3
Physical installation . . . . . . . . . . . . . . . . . . . . . . . 5
Device network configuration . . . . . . . . . . . . . 10
Verify operation . . . . . . . . . . . . . . . . . . . . . . . . . 11
Product Certifications . . . . . . . . . . . . . . . . . . . . 28

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Wireless considerations
Power up sequence
The Smart Wireless Gateway should be installed and functioning properly before
any wireless field devices are powered. Install the Black Power Module,
SmartPower™ Solutions model number 701PBKKF (part number
00753-9220-0001) into the Rosemount 702 Transmitter to power the device.
Wireless devices should be powered up in order of proximity from the Gateway,
beginning with the closest device, then working outward from the Gateway. This
results in a simpler and faster network installation. Enable Active Advertising on
the Gateway to ensure new devices are able to join the network faster. For more
information see the Smart Wireless Gateway Manual (document number
00809-0200-4420).
Antenna position
Position antenna vertically, either straight up or straight down, and should be
approximately 3 ft. (1 m) from any large structure, building, or conductive surface
to allow for clear communication to other devices.
Figure 1. Antenna Position
Conduit entries
Upon installation, ensure that each conduit entry is either sealed with a conduit
plug with appropriate thread sealant, or has an installed conduit fitting or cable
gland with appropriate thread sealant. Note the conduit entries on the
Rosemount 702 Transmitter are threaded 1/2–14 NPT.

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Figure 2. Conduit Entry
A. Conduit entry
Field Communicator connections
The power module needs to be installed before the Field Communicator can
interface with the Rosemount 702 Transmitter. This transmitter uses the Black
Power Module; Order model number 701PBKKF or part number
00753-9220-0001.
Figure 3. Connection Diagram
The Rosemount 702 Transmitter and all other wireless devices should not be set
up until after the Smart Wireless Gateway has been installed and is functioning
properly.
The Rosemount 702 Transmitter can be installed in one of two configurations:
Direct mount, where the switch is connected directly to the Rosemount 702
Transmitter housing’s conduit entry or
Remote mount, where the switch is mounted separate from the Rosemount
702 Transmitter housing, then connected to the Rosemount 702 Transmitter
via conduit.
Select the installation sequence that corresponds to the mounting configuration.
A
A
COMM
P/N00753-9200-0020
1
2
3
4
0020
CH1 +
CMN
CH2 +
CMN
CH Input Mode:
Dry Contact Only
CH Output Mode:
26VDC Max
100mA Max

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Step 1: Physical installation
Direct mount
Figure 4. Direct Mount
A. Rosemount 702 Transmitter
B. Float switch
Note
Direct mount installation should not be employed when using tubing and connectors such as
Swagelok®fittings.
1. Install the switch according to standard installation practices making sure to use
thread sealant on all connections.
2. Attach the Rosemount 702 Transmitter housing to the switch using the
threaded conduit entry.
3. Attach the switch wiring to the terminals as indicated on the wiring diagram
(Figures 12– 26 on pages 12 through 26).
4. Connect the Black Power Module.
Note
Wireless devices should be powered up in order of proximity from the Smart Wireless Gateway,
beginning with the closest device to the Gateway. This will result in a simpler and faster network
installation.

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5. Close the housing cover and tighten to safety specification. Always ensure a
proper seal so the metal touches metal, but do not over tighten.
6. Position antenna vertically, either straight up or straight down. The antenna
should be approximately 3 ft. (0.91 m) from any large structures or buildings,
to allow clear communication to other devices.
Remote mount
Figure 5. Remote Mount
A. Rosemount 702 Transmitter
B. Float switch
1. Install the switch according to standard installation practices making sure to
use thread sealant on all connections.
2. Run wiring (and conduit if necessary) from the switch to the Rosemount 702
Transmitter.
3. Pull the wiring through the threaded conduit entry of the Rosemount 702
Transmitter.
4. Attach the switch wiring to the terminals as indicated on the wiring diagram
(Figures 12– 26 on pages 12 through 26).
Possible antenna rotation shown.
Antenna rotation allows for best
installation practices in any
configuration.

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5. Connect the black power module.
Note
Wireless devices should be powered up in order of proximity from the Smart Wireless Gateway,
beginning with the closest device to the gateway. This will result in a simpler and faster network
installation.
6. Close the housing cover and tighten to safety specification. Always ensure a
proper seal so the metal touches metal, but do not over tighten.
7. Position antenna vertically, either straight up or straight down. The antenna
should be approximately 3 ft. (0.91 m) from any large structures or buildings,
to allow clear communication to other devices.

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High gain, remote antenna (optional)
The high gain, remote antenna options provide flexibility for mounting the
Rosemount 702 Transmitter based on wireless connectivity, lightning protection,
and current work practices.
The high gain, remote mount antenna kit includes coaxial sealant for the cable
connections for the lightning arrestor and antenna.
Find a location where the remote antenna has optimal wireless performance.
Ideally this will be 15–25 ft. (4.6–7.6 m) above the ground or 6 ft. (2 m) above
obstructions or major infrastructure. To install the remote antenna use one of the
following procedures:
WN option
1. Mount the antenna on a 1.5 to 2-in. pipe mast using the supplied mounting
equipment.
2. Connect the lightning arrestor directly to the top of the Rosemount 702
Transmitter.
3. Install the grounding lug, lock washer, and nut on top of lightning arrestor.
4. Connect the antenna to the lightning arrestor using the supplied LMR-400
coaxial cable ensuring the drip loop is not closer than 1 ft. (0.3 m) from the
lightning arrestor.
5. Use the coaxial sealant to seal each connection between the wireless field
device, lightning arrestor, cable, and antenna.
6. Ensure the mounting mast and lightning arrestor are grounded according to
local/national electrical code.
Any spare lengths of coaxial cable should be placed in 12-in. (0.3 m) coils.
When installing remote mount antennas for the Rosemount 702 Transmitter, always use established safety
procedures to avoid falling or contact with high-power electrical lines.
Install remote antenna components for the Rosemount 702 Transmitter in compliance with local and
national electrical codes and use best practices for lightning protection.
Before installing, consult with the local area electrical inspector, electrical officer, and work area supervisor.
The Rosemount 702 Transmitter remote antenna option is specifically engineered to provide installation
flexibility while optimizing wireless performance and local spectrum approvals. To maintain wireless
performance and avoid non-compliance with spectrum regulations, do not change the length of cable or
the antenna type.
If the supplied remote mount antenna kit is not installed per these instructions, Emerson™ Process
Management is not responsible for wireless performance or non-compliance with spectrum regulations.

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Figure 6. Rosemount 702 Transmitter with High Gain, Remote Antenna
Note: Weatherproofing
The remote mount antenna kit includes coaxial sealant for weatherproofing the cable connections
for the lightning arrestor, antenna, and Rosemount 702 Transmitter. Coaxial sealant must be
applied to guarantee performance of the wireless field network. See Figure 7 on page 9 for details
on how to apply coaxial sealant.
Figure 7. Applying Coaxial Sealant to Cable Connections

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Step 2: Device network configuration
In order to communicate with the Smart Wireless Gateway, and ultimately the
host system, the transmitter must be configured to communicate with the
wireless network. This step is the wireless equivalent of connecting wires from a
transmitter to the information system. Using a Field Communicator or AMS
Wireless Configurator, enter the Network ID and Join Key so they match the
Network ID and Join Key of the Gateway and other devices in the network. If the
Network ID and Join Key do not match that of the Gateway, the Rosemount 702
Transmitter will not communicate with the network. The Network ID and Join Key
may be obtained from the Smart Wireless Gateway on the
Setup>Network>Settings page on the web interface, shown in Figure 8.
Figure 8. Gateway Network Settings
AMS Wireless Configurator
1. Right click on the Rosemount 702 Transmitter.
2. Select Configure.
3. When the menu opens, select Join Device to Network.
4. Follow the method to enter the Network ID and Join Key.
Field Communicator
The Network ID and Join Key may be changed in the wireless device by using the
following Fast Key sequence. Set both Network ID and Join Key.
Function Fast Key sequence Menu items
Wireless setup 2,2,1 Network ID, Join Device to Network

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Step 3: Verify operation
There are four ways to verify operation: using the optional local display (LCD),
using the Field Communicator, using the Smart Wireless Gateway’s integrated
web interface, or by using AMS Suite Wireless Configurator. If the Rosemount 702
Transmitter was configured with the Network ID and Join Key, and sufficient time
has passed, the transmitter will be connected to the network.
Local display
Start-up sequence
When the Rosemount 702 Transmitter is first powered up, the LCD display will
display a sequence of screens: All Segments On, Device Identification, Device Tag,
and then the user chosen variables of the periodic display.
During steady state operation, the LCD display gives a periodic display of user
chosen variables at the configured wireless update rate. These variables can be
selected from a list of six:
Channel 1 State
Channel 1 Count
Channel 2 State
Channel 2 Count
Electronics Temperature
Supply Voltage.
Refer to the Rosemount 702 Reference Manual (document number
00809-0200-4702) for error codes and other LCD display messages. The
chevron-shaped status bar at the top of the screen indicates the progress of the
network join process. When the status bar is filled, the device is successfully
connected to the wireless network.
Field Communicator
For HART®Wireless transmitter communication, a Rosemount 702 Transmitter
DD is required.To obtain the latest DD, visit the Emerson Easy Upgrade site at:
Emerson.com/Device-Install-Kits.
Searching for network Joining network Connected with limited
bandwidth Connected
N E T w K
S R C H N G
n e t w k
N E G O T
n e t w k
L I M -O P
n e t w k
O K

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Smart Wireless Gateway
In the Gateway’s integrated web server, navigate to the Explorer page. This page
shows whether the device has joined the network and is communicating
properly.
Note
It may take several minutes for the device to join the network.
Note
If the device joins the network and immediately has an alarm present, it is likely caused by the
sensor configuration. Check the sensor wiring (see “Rosemount 702 Transmitter Terminal” on
page 14) and the sensor configuration (see “Rosemount 702 Transmitter Fast Key Sequence” on
page 27).
Figure 9. Smart Wireless Gateway Explorer Page
Function Key sequence Menu items
Communications 3, 3 Join Status, Wireless Mode, Join Mode, Number
of Available Neighbors, Number of
Advertisements Heard, Number of Join Attempts

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AMS Wireless Configurator
When the device has joined the network, it will appear in AMS Wireless
Configurator as illustrated below.
Figure 10. AMS Wireless Configurator, Device Explorer Screen
Troubleshooting
If the device is not joined to the network after power up, verify the correct
configuration of the Network ID and Join Key, and that Active Advertising has
been enabled on the Smart Wireless Gateway. The Network ID and Join Key in the
device must match the Network ID and Join Key of the Gateway.
The Network ID and Join Key may be obtained from the Gateway on the
Setup>Network>Settings page of the web interface (see Figure 11 on page 13). The
Network ID and Join Key may be changed in the wireless device by using a field
communicator and by following the Fast Key sequence.
Figure 11. Gateway Network Settings

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Reference information: wiring switch inputs, output circuits, and
leak sensors
Dry contact switch inputs
The Rosemount 702 Transmitter has a pair of screw terminals for each of two
channels, and a pair of communication terminals. These terminals are labeled as
follows:
Figure 12. Rosemount 702 Transmitter Terminal
Wireless output specifications
Dual input
The Rosemount 702 Transmitter will accept the input from one or two single pole
single throw switches on inputs CH1 and CH2. The wireless output of the
transmitter will be both a primary variable (PV) and a secondary variable (SV). The
PV is determined by the CH1 input. The SV is determined by the CH2 input. A
closed switch drives a TRUE output. An Open switch drives a FALSE output.
Function Fast Key sequence Menu items
Wireless 2, 1, 1 Join Device to Network
CH1+: Channel one positive
CMN: Common
CH2+: Channel two positive
CMN: Common
COMM: Communication

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Note
Any dry contact input may optionally be inverted by the device, so change the discrete logic state.
This is useful, for instance, if a normally open switch is used to replace a normally closed switch.
Figure 13. Single and Dual Input
Dual input, limit contact logic
When configured for Limit Contact Logic, the Rosemount 702 Transmitter will
accept the input from two single pole single throw switch on inputs CH1 and CH2,
and will use limit contact logic for the determination of the wireless outputs.
Figure 14. Dual Input, Limit Contacts
Table 1. Single or Dual Input
Switch input Wireless output Switch input Wireless output
CH1 PV CH2 SV
Closed TRUE (1.0) Closed TRUE (1.0)
Open FALSE (0.0) Open FALSE (0.0)

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Dual input, opposing contact logic
When configured for Opposing Contact Logic, the Rosemount 702 Transmitter
will accept the input from a double pole single throw switch on inputs CH1 and
CH2, and will use opposing contact logic for the determination of the wireless
outputs.
Figure 15. Dual Input, Opposing Contact
Momentary discrete inputs, measurement option code 32 and 42
The Rosemount 702 Transmitter is capable of detecting momentary discrete
inputs of 10 milliseconds or more in duration, regardless of the wireless update
rate. At each wireless update, the device reports current discrete input state
along with an accumulating count of close-open cycles for each input channel.
Table 2. Dual Input, Limit Contact Logic
Switch input Wireless output
CH1 CH2 PV SV
Open Open TRAVEL (0.5) TRAVEL (0.5)
Open Closed FALSE (0.0) FALSE (0.0)
Closed Open TRUE (1.0) TRUE (1.0)
Closed Closed FAULT(NaN) FAULT(NaN)
Table 3. Dual input, Opposing Contact Logic
Switch inputs Wireless outputs
CH1 CH2 PV SV
Open Open FAULT(NaN) FAULT(NaN)
Open Closed FALSE (0.0) FALSE (0.0)
Closed Open TRUE (1.0) TRUE (1.0)
Closed Closed FAULT(NaN) FAULT(NaN)

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Figure 16. Momentary Inputs and Accumulating Count
Figure 17. Reporting of Current Discrete State and Count in AMS Device Manager
Variable reporting and mapping
The Rosemount 702 Transmitter has two choices for variable reporting: Classic -
Discrete State Only, or Enhanced – Discrete State and Count. In the Classic
variable reporting mode, the Rosemount 702 Transmitter will report variables
exactly like the previous version of the device (measurement option code 22). In
the Enhanced variable reporting mode, the Rosemount 702 Transmitter will
provide both current state of the discrete channels, and a count of the discrete
state change cycles. Following is a table that shows the variable mapping for both
Current State
Count

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cases. Variable Reporting can be set in AMS Device Manager by going to
Configure>Manual Setup>HART.
Discrete output circuits, measurement option code 42
The Rosemount 702 Transmitter has two channels that can each be configured
for discrete input or output. Inputs must be dry contact switch inputs and these
were described in a preceding section of this document. Outputs are a simple
switch closure to activate an output circuit. The Rosemount 702 Transmitter
output does not provide any voltage or current, the output circuit must have
power of its own. The Rosemount 702 Transmitter output has maximum switch
capacity per channel of 26 volts DC and 100 milliamps.
Note
It is very important that the polarity of the output circuit is as shown in the wiring diagrams, with
the positive (+) side of the circuit wired to the + terminal of each channel, and the negative (-) side
of the circuit wired to the CMN terminal. If the output circuit is wired backwards it will remain
active (switch closed) regardless of the state of the output channel.
Discrete output switch functionality
The discrete output of the Rosemount 702 Transmitter is driven by the host
control system, through the Smart Wireless Gateway, and out to the Rosemount
702 Transmitter. The time required for this wireless communication from the
Gateway to the Rosemount 702 Transmitter is dependent on many factors,
including the size and topology of the network and the total amount of
downstream traffic on the wireless network. For a network that is constructed to
our best practices, typical delays in communication of a discrete output from the
Gateway to the Rosemount 702 Transmitter are 15 seconds or less. Remember
that this delay is only part of the latency that well be observed in a control loop.
Note
The output switch functionality of the Rosemount 702 Transmitter requires that the network is
managed by a version 4 Smart Wireless Gateway, with v4.3 or greater firmware installed.
Table 4. Variable Mapping
Variable reporting PV SV TV QV
Classic – Discrete State Only CH1 State CH2 State Electronics
temperature Supply voltage
Enhanced – Discrete State with Count CH1 State CH2 State CH1 Count CH2 Count

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Figure 18. Output Circuit Wiring
Figure 19. Possible Configurations for Both Channel 1 and Channel 2
Special considerations for dual output circuits
If both channels are connected to output circuits, it is very important that the
CMN terminal of each circuit be at the same voltage. Employing a common
ground for both output circuits is one way to ensure that both circuits have CMN
terminals at the same voltage.

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Figure 20. Dual Output Circuits with a Common Ground
If two output circuits are connected to a single Rosemount 702 Transmitter with
a single power supply, both CH + and CMN terminals must be connected to each
output circuit. The negative power supply wires must be at the same voltage and
connected to both CMN terminals.
Figure 21. Dual Output Circuits with One Power Supply
Switching greater currents or voltages
It is important to note that the maximum output switching capacity is 26 volts DC
and 100 milliamps. If a greater voltage or current is to be switched, an interposing
relay circuit can be used. Figure 22 shows an example of a circuit to switch higher
currents or voltages.