Emerson Rosemount 702 User manual

Quick Start Guide
00825-0200-4702, Rev HA
April 2021
Rosemount™ 702 Wireless Discrete
Transmitter

Safety messages
WARNING
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.
Before connecting a handheld 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.
CAUTION
Shipping considerations for wireless products.
The unit was shipped to you without the power module installed. Remove the power module prior to
shipping.
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
About this guide...........................................................................................................................3
Wireless considerations................................................................................................................4
Physical installation...................................................................................................................... 7
Device network configuration.................................................................................................... 14
Verify operation......................................................................................................................... 15
Reference information: wiring switch inputs, output circuits, and leak sensors...........................19
Safety shower and eye wash monitoring.................................................................................... 40
Product certification...................................................................................................................42
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1 About this guide
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 for more instruction. This guide and the manual are
available electronically on Emerson.com/Rosemount.
Model number Functionality Manual
702DX32/42 Two channel discrete I/O Rosemount 702 Wireless
Discrete Transmitter
Reference Manual
702DX61 One channel for nVent™
RAYCHEM liquid
hydrocarbon leak detection
Rosemount 702 Wireless
Discrete Transmitter
Reference Manual
702DX52 Discrete Transmitter for
Plunger Arrival Detection
Rosemount 702 Wireless
Discrete Transmitter Manual
Supplement
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2 Wireless considerations
2.1 Power up sequence
The Wireless Gateway should be installed and functioning properly before
any wireless field devices are powered. Install the Power Module,
SmartPower™ Solutions model number 701PBKKF 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 formation. Enable Active Advertising on the Gateway to ensure new
devices are able to join the network faster. For more information see the
Emerson Wireless 1410S Gateway.
2.2 Antenna position
The antenna should be positioned vertically, either straight up or straight
down, and it should be approximately 3 ft. (1 m) from any large structure,
building, or conductive surface to allow for clear communication to other
devices.
Figure 2-1: Antenna Position
2.3 Conduit entry
Upon installation, ensure each conduit entry is either sealed with a conduit
plug using approved thread sealant, or has an installed conduit fitting or
cable gland with appropriate threaded sealant.
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Note
The conduit entries are threaded ½–14 NPT.
Figure 2-2: Conduit Entry
AA
A. Conduit entry
2.4 Field Communicator connections
The power module needs to be installed before the Field Communicator can
interface with the Rosemount 702 Wireless transmitter. For HART® Wireless
Transmitter communication via a Field Communicator, a Rosemount 702
Wireless Device Dashboard (DD) is required. To obtain the latest DD, visit
the Field Communicator System Software and Device Description site at:
Emerson.com/Field-Communicator. This transmitter uses the Black Power
Module; Order model number 701PBKKF.
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Figure 2-3: Connection Diagram
$&%1 2 3
4 5 6
7 8
0
9
A. Communication terminals
B. Handheld communicator
C. HART modem
The transmitter and all other wireless devices should not be set up until after
the Wireless Gateway has been installed and is functioning properly.
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3 Physical installation
The Rosemount 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.
•Remote mount, where the switch is mounted separate from the
Rosemount 702 Transmitter housing, then connected to the Rosemount
702 Transmitter.
Select the installation sequence that corresponds to the mounting
configuration.
3.1 Direct mount installation
Note
Direct mount installation should not be employed when using tubing and
connectors such as Swagelok® fittings.
Figure 3-1: Direct Mount
A. Rosemount 702 Transmitter
B. Float switch
Procedure
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 (see Reference information: wiring switch inputs, output
circuits, and leak sensors).
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4. Connect the Power Module.
Note
Wireless devices should be powered up in order of proximity from
the Wireless Gateway, beginning with the closest device to the
Gateway. This will result in a simpler and faster network formation.
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.
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3.2 Remote mount installation
Figure 3-2: Remote Mount
A. Rosemount 702 Transmitter
B. Float switch
Procedure
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 (see Reference information: wiring switch inputs, output
circuits, and leak sensors).
5. Connect the power module.
Note
Wireless devices should be powered up in order of proximity from
the Wireless Gateway, beginning with the closest device to the
gateway. This will result in a simpler and faster network formation.
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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.
A
A. 2-in. U-bolt for pipe fitting
3.3 Remote antenna (optional)
The high gain, remote antenna options provide flexibility for mounting the
device based on wireless connectivity, lightning protection, and current
work practices.
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Figure 3-3: Rosemount 702 Transmitter with Remote Antenna
3.3.1 Remote antenna installation (WN/WJ option)
Prerequisites
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.
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WARNING
When installing remote mount antennas for the transmitter, always use
established safety procedures to avoid falling or contact with high-power
electrical lines.
Install remote antenna components for the 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 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 is not responsible for wireless performance or non-
compliance with spectrum regulations.
Procedure
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
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.
Note
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 3-4 for details on how to apply coaxial sealant.
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Figure 3-4: Applying Coaxial Sealant to Cable Connections
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.
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4 Device network configuration
In order to communicate with the 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 Wireless Gateway on
the Setup Network Settings page on the web interface, shown in Figure 4-1.
Figure 4-1: Gateway Network Settings
4.1 AMS Wireless Configurator
Procedure
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.
4.2 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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5 Verify operation
There are four methods available to verify operation:
•Using the optional local display (LCD)
•Using the Field Communicator
•Using the Wireless Gateway’s integrated web interface
•Using AMS Suite Wireless Configurator
If the device was configured with the Network ID and Join Key, and sufficient
time has passed, the transmitter will be connected to the network.
5.1 Local display
5.1.1 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 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.
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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
5.2 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.
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
5.3 Wireless Gateway
Procedure
In the Gateway’s integrated web server, navigate to the user interface page.
This page shows whether the device has joined the network and is
communicating properly. Refer to Emerson Wireless Gateway Reference
Manual.
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
Figure 6-1) and the sensor configuration (see Table 6-7).
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Figure 5-1: Wireless Gateway Explorer Page
5.4 AMS Wireless Configurator
When the device has joined the network, it will appear in AMS Wireless
Configurator as illustrated below.
Figure 5-2: AMS Wireless Configurator, Device Explorer Screen
5.5 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 Wireless Gateway. The Network ID and Join Key in
the device must match the Network ID and Join Key of the Gateway.
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Procedure
1. From the Gateway's integrated web interface, select Setup Network
Settings to obtain the Network ID and Join Key (see Figure 5-3).
Figure 5-3: Gateway Network Settings
2. To change the Network ID and Join Key in the wireless device, use a
Field Communicator and enter the following Fast Key sequence.
Function Fast Key sequence Menu items
Wireless 2, 1, 1 Join Device to Network
3. Follow the on screen prompts.
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6 Reference information: wiring switch inputs,
output circuits, and leak sensors
6.1 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:
CH1+: Channel one positive
CMN: Common
CH2+: Channel two positive
CMN: Common
COMM: Communication
Figure 6-1: Rosemount 702 Transmitter Terminal
6.2 Wireless output specifications
6.2.1 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
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CH2 input. A closed switch drives a TRUE output. An Open switch drives a
FALSE output.
Note
Any dry contact input may optionally be inverted by the device, to change
the discrete logic state. This is useful, for instance, if a normally open switch
is used to replace a normally closed switch.
Figure 6-2: Single and Dual Input
A. Single Input
B. Dual Input
Table 6-1: 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)
6.2.2 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.
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