Emerson Wireless Field Link User manual

Quick Start Guide
00825-0100-4421, Rev DB
February 2019
Emerson™Wireless Field Link

February 2019
2
Quick Start Guide
NOTICE
This guide provides basic guidelines for the Emerson Wireless Field Link. It does not provide instructions for
diagnostics, maintenance, service, or troubleshooting. This guide is also available electronically on
www.Emerson.com.
Failure to follow these installation guidelines could result in death or serious injury.
Make sure only qualified personnel perform the installation.
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.
Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals. High voltage may be present on leads can cause electrical shock.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired
operation.
This device must be installed to ensure a minimum antenna separation distance of 8-in. (20 cm) from all
persons.
Contents
Wireless considerations . . . . . . . . . . . . . . . . . . . 3
Physical installation . . . . . . . . . . . . . . . . . . . . . . . 5
Verify operation . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Reference information . . . . . . . . . . . . . . . . . . . . 7
Ordering information . . . . . . . . . . . . . . . . . . . . . 9
Product certifications . . . . . . . . . . . . . . . . . . . . 11

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1.0 Wireless considerations
1.1 Power up sequence
The Emerson Wireless Field Link and wireless I/O should be installed and
functioning properly before the power modules are installed in any wireless field
devices. Wireless field devices should also be powered up in order of proximity
from the Field Link beginning with the closest. This will result in a simpler and
faster network installation.
1.2 Mounting location
The Field Link should be mounted in a location that allows convenient access to
the host system network (wireless I/O) as well as the wireless field device
network.
Find a location where the Field Link has optimal wireless performance. Ideally
this will be 15 to 25 ft. (4,6 to 7,6 m) above the ground or 6 ft. (2 m) above
obstructions or major infrastructure.
Figure 1. Mounting Location
A. Control room
B. Ground
C. Field link
D. Mast or pipe
E. Infrastructure
AB
C
D
E
15- to 25-ft.
(4,6 to 7,6 m)
6-ft. (2 m)

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1.3 Antenna position
The antenna should be positioned 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 2. Antenna Position
1.4 Conduit plug
The temporary orange plugs should be replaced with the included conduit plugs
using approved thread sealant.
Figure 3. Conduit Plugs
A. Conduit plug
AA

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1.5 Intended use
The Field Link must be used in conjunction with a network manager or
network Gateway. The Field Link then functions as a translator between the
wired network and a wireless field network.
Figure 4. Example System Architecture
2.0 Physical installation
2.1 Pipe mounting
1. Insert larger U-bolt around 2-in. pipe/mast, through the saddle, through
the L-shaped bracket, and through the washer plate.
2. Use a 1/2-in. socket-head wrench to fasten the nuts to the U-bolt.
3. Insert smaller U-bolt around base the Field Link and through the L-shaped
bracket.
4. Use a 1/2-in. socket-head wrench to fasten the nuts to the U-bolt.
Figure 5. Mounting
A. Host system
B. Control network
C. Network manager
D. Field link
E. Wireless field network
F. Wireless field devices
A
B
C
D
E
F

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2.2 Power and data wiring
1. Remove housing cover labeled “Field Terminals.”
2. Connect the positive power lead to the “+” power terminal and the negative
power lead to the “–” terminal.
3. Connect the Data + lead to the “A (+)” terminal and the Data – lead to the
“B (–)” terminal.
4. Plug and seal any unused conduit connections.
5. Replace the housing cover.
Figure 6. Emerson Wireless Field Link Terminal Diagram
2.3 Grounding
The Field Link enclosure should always be grounded in accordance with national
and local electrical codes. The most effective grounding method is a direct
connection to earth ground with minimal impedance. Ground the Field Link by
connecting the external ground lug to earth ground. The connection should be
1 or less.
3.0 Verify operation
3.1 Power-up sequence
Upon applying power to the Field link the LCD display meter will activate and
display a series of startup screen. The following screens are displayed during
startup.
1. Startup Screen 1 – All segments on
2. Startup Screen 2 – Device identification
3. Startup Screen 3 – Tag
4. Startup Screen 4 – Status
A. Data A (+)
B. Data B (–)
C. +10.5 to 30 VDC
D. Return
A
B
C
D

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February 2019
3.2 Normal operation
After the initial startup screens the Field Link will cycle through several periodic
screens.
1. Electronics Temperature Screen
2. Percent Range Screen
3. Wired Interface Usage
4. Radio Interface Usage
The Field Link will continue to rotate through each periodic screen through the
course of normal operation. If any diagnostic or fault condition occurs, a
corresponding diagnostics screen will appear.
4.0 Reference information
Figure 7. Emerson Wireless Field Link Terminal Diagram
Note
The Emerson Wireless Field Link requires separate twisted shield pairs (four wires) for
power and data.
A. Data A (+)
B. Data B (–)
C. +10.5 to 30 VDC
D. Return
A
B
C
D

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Figure 8. Emerson Wireless Field Link Dimensional Drawing
Table 1. Emerson Wireless Field Link Specifications
A. 2x Conduit plug
B. Possible antenna rotation shown
C. Extended range antenna
D. WirelessHART®antenna
Item Specifications
Input power 10.5 – 30 VDC
Operating temperature –40 to 185 °F (–40 to 85 °C)
Wiring (power) 24 AWG - 14 AWG twisted shielded pair(1)
1. Ambient temperatures above 60 °C require wiring rated to at least 5 °C above max ambient temperature.
Wiring (RS-485 communications) 24 AWG - 14 AWG twisted shielded pair1
Less than 15 pF/ft capacitance.
Wiring distance 656 ft. (200 m)
Wireless protocol WirelessHART, 2.4 – 2.5 GHz DSSS
Wireless output power, EIRP 10 dBm with WK antenna and 12.5 dBm with WM antenna
Mounting All SST, 2-in. pipe and panel mount bracket
Humidity 0 – 90% relative humidity
A
B
C
D
90°
5.51
(140)
4.20
(107)
3.55
(90.17)
10.91
(277)
12.43
(316)
3.55
(90.17)
5.51
(140)
5.21
(132)

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5.0 Ordering information
Table 2. Emerson Wireless Field Link
★The Standard offering represents the most common options. The starred options (? ) should be selected for best delivery.
The expanded offering is subject to additional delivery lead time.
Model Product description
781 Emerson Wireless Field Link
Physical connection
A1 RS485 ★
Housing
DDual compartment housing - aluminum ★
EDual compartment housing - stainless steel ★
Conduit threads
11/2–14 NPT ★
2M20 ★
Product certifications
I5 USA Intrinsically Safe, Non-incendive ★
I6 Canada Intrinsically Safe ★
I1 ATEX Intrinsic Safety ★
I7 IECEx Intrinsic Safety ★
KD USA and Canada Intrinsically Safe, ATEX and IECEx Intrinsic Safety ★
I2 INMETRO, Intrinsic Safety ★
I4 Japan Intrinsic Safety ★
IM EAC Intrinsic Safety ★
I3 China (NEPSI) Intrinsic Safety ★
KL USA and Canada Intrinsic Safety, ATEX Intrinsic Safety ★
NA No Approvals ★
Wireless update rate, operating frequency and protocol
WA3 WirelessHART ★
Omnidirectional wireless antenna and SmartPower™
WK3 External antenna, line power 10 –30 VDC ★
WM3 Extended range, external antenna, line power 10 –30 VDC ★

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Options (Include with selected model number)
Meter
M5 LCD display ★
Gland and connector options
G2 Cable gland (7,5 –11,9 mm)
G4 Thin wire cable gland (3 –8 mm)
Typical model number: 781 A1 D 1 KL WA3 WK3 M5

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6.0 Product certifications
Rev 2.6
6.1 European Directive Information
A copy of the EU Declaration of Conformity can be found at the end of the
Quick Start Guide. The most recent revision of the EU Declaration of
Conformity can be found at Emerson.com.
6.2 Ordinary Location Certification
As standard, the transmitter has been examined and tested to determine that
the design meets the basic electrical, mechanical, and fire protection
requirements by a nationally recognized test laboratory (NRTL) as accredited
by the Federal Occupational Safety and Health Administration (OSHA).
6.3 Installing in North America
The US National Electrical Code®(NEC) and the Canadian Electrical Code
(CEC) permit the use of Division marked equipment in Zones and Zone
marked equipment in Divisions. The markings must be suitable for the area
classification, gas, and temperature class. This information is clearly defined in
the respective codes.
USA
I5 USA Intrinsically Safe (IS), Nonincendive (NI) and Dust-ignitionproof
Certificate: FM 17US0235X
Standards: FM Class 3600:2011, FM Class 3610:2010, FM Class 3611:2004,
FM Class 3810:2005, ANSI/ISA 60079 – 0:2009, ANSI/UL 60079 – 11:2009,
ANSI/ISA 61010 – 1:2004, ANSI/NEMA 250:2003, ANSI/IEC 60529:2004;
Markings: IS CL I, DIV 1, GP A, B, C, D; CL II, DIV 1, GP E, F, G; Class III T4;
Class 1, Zone 0 AEx ia IIC T4;
NI CL I, DIV 2, GP A, B, C, D T4;
DIP CL II, DIV 1, GP E, F, G; CL III T4;
when installed per drawing 00781-1010
T4(–40 °C Ta+70 °C)
Special Conditions for Safe Use (X):
1. The Rosemount 781 transmitter housing contains aluminum and is considered a
potential risk of ignition by impact or friction. Care must be taken into account
during installation and use to prevent impact and friction.
2. The surface resistivity of the unit is greater than 1 gigaohm. To avoid electrostatic
charge buildup, it must not be rubbed or cleaned with solvents or a dry cloth.
3. The Rosemount 781 transmitter will not pass the 500 Vrms electric strength test
and this must be taken into account during installation.
Input parameters
(power terminals)
Input parameters
(sensor terminals)
Output parameters
(sensor terminals)
VMAX/Ui= 30 V VMAX/Ui= 11 V Voc/Uo= 7.14 V
IMAX/Ii= 200 mA IMAX/Ii= 300 mA Isc/Io= 112 mA
PMAX/Pi= 1 W PMAX/Pi= 1 W PMAX/Po= 640 mW
Ci= 10 nF Ci= 5 nF Ca/Co = 13.49nF
Li= 3.3 H Li= 2.2 H La/Lo= 2 mH

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Canada
I6 Canada Intrinsically Safe
Certificate: CSA 2330424
Standards: CSA C22.2 No. 0-M91, CSA C22.2 No.94-M91, CSA Std. C22.2 No.
142-M1987, CSA-C22.2 No. 157-92, CSA Std. C22.2 No. 60529 – 2005
Markings: Intrinsically Safe Class I, Division 1, Groups A, B, C, and D T3C (Ta+60 °C)
Type 4X; IP 66/67; when installed per 00781-1011
Europe
I1 ATEX Intrinsic Safety
Certificate: Baseefa11ATEX0059X
Standards: EN IEC 60079-0:2018, EN 60079-11: 2012
Markings: II 1 G Ex ia IIC T4 Ga, T4(–40 °C Ta+70 °C)
Special Conditions for Safe Use (X):
1. The plastic antenna may present a potential electrostatic ignition hazard and must
not be rubbed or cleaned with a dry cloth.
2. The Rosemount 781 enclosure is made of aluminum alloy and given a protective
paint finish; however, care should be taken to protect it from impact or abrasion if
located in a zone 0 environment.
3. The apparatus is not capable of withstanding the 500 V isolation test required by EN
60079-11. This must be taken into account when installing the apparatus.
International
I7 IECEx Intrinsic Safety
Certificate: IECEx BAS 11.0028X
Standards: IEC 60079-0: 2011, IEC 60079-11: 2011
Markings: Ex ia IIC T4 Ga, T4(–40 °C Ta+70 °C)
Input parameters
(power terminals)
Input parameters
(RS485)
Output parameters
(RS485)
Ui= 30 V Ui= 11 V Uo= 7.14 V
Ii= 200 mA Ii= 300 mA Io= 112 mA
Pi= 1 W Pi= 1 W Po= 1 W
Ci= 0 F Ci= 5.1 nF Co = 13.9 F
Li= 0 mH Li= 0 mH Lo=1000 H
Input parameters
(power terminals)
Input parameters
(RS485)
Output parameters
(RS485)
Ui= 30 V Ui= 11 V Uo= 7.14 V
Ii= 200 mA Ii= 300 mA Io= 112 mA
Pi= 1 W Pi= 1 W Po= 1 W
Ci= 0 F Ci= 5.1 nF Co = 13.9 F
Li= 0 mH Li= 0 mH Lo=1000 H

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Special Conditions for Safe Use (X):
1. The plastic antenna may present a potential electrostatic ignition hazard and must not
be rubbed or cleaned with a dry cloth.
2. The Rosemount 781 enclosure is made of aluminum alloy and given a protective paint
finish; however, care should be taken to protect it from impact or abrasion if located in
a zone 0 environment
3. The apparatus is not capable of withstanding the 500 V isolation test required by EN
60079-11. This must be taken into account when installing the apparatus.
China (NEPSI)
I3 China (NEPSI) Intrinsic Safety
Certificate: GYJ18.1480X
Standards: GB3836.1-2010, GB3836.4-2010, GB3836.20-2010
Markings: Ex ia IIC T4 Ga, –40 ~+ 70 °C
Special Condition for Safe Use (X):
1. See certificate for special conditions.
EAC – Belarus, Kazakhstan, Russia
IM (EAC) Intrinsic Safety
Certificate: RU C-US.Gb05.B.00643
Markings: 0Ex ia IIC T4 Ga X
Special Condition for Safe Use (X):
1. See certificate for special conditions.
Japan
I4 CML Intrinsic Safety
Certificate: CML 18JPN2024X
Markings: Ex ia IIC T4 Ga, –40 ~+ 70 °C
Special Condition for Safe Use (X):
1. See certificate for special conditions.
Brazil
I2 INMETRO Intrinsic Safety
Certificate: UL-BR 16.0478X
Standards: ABNT NBR IEC 60079-0:2013 ABNT NBR IEC 60079-11:2013
Markings: Ex ia IIC T4 Ga, –40 ~+ 70 °C IP66, UL BR
Special Condition for Safe Use (X):
1. See certificate for special conditions.
Input parameters
(power terminals)
Input parameters
(RS485)
Output parameters
(RS485)
Ui= 30 B Ui= 11 B Uo= 7.14 B
Ii= 200 MA Ii= 300 MA Io= 112 MA
Pi= 1 BTPi= 1 BTPo= 1 BT
Ci= 0 мкΦCi= 5.1 HΦCo = 13.9 мкΦ
Li= 0 MГHLi= 0 MГHLo=0 MГH

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Combinations
KD Combination of I1, I5, and I6
KL Combination of I1, I5, I6, and I7

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Figure 9. Rosemount 781 Declaration of Conformity
EU Declaration of Conformity
No: RMD 1083 Rev. H
Page 1 of 3
We,
Rosemount, Inc.
8200 Market Boulevard
Chanhassen, MN 55317-9685
USA
declare under our sole responsibility that the product,
Rosemount 781 Wireless Field Link
manufactured by,
Rosemount, Inc.
8200 Market Boulevard
Chanhassen, MN 55317-9685
USA
to which this declaration relates, is in conformity with the provisions of the European Union
Directives, including the latest amendments, as shown in the attached schedule.
Assumption of conformity is based on the application of the harmonized standards and, when
applicable or required, a European Union notified body certification, as shown in the attached
schedule.
(si
g
nature)
Vice President of Global Quality
(function)
Chris LaPoint
(name)
1-Feb-19
(date of issue)

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EU Declaration of Conformity
No: RMD 1083 Rev. H
Page 2 of 3
EMC Directive (2014/30/EU)
Harmonized Standards:
EN 61326-1:2013
Radio Equipment Directive (RED) (2014/53/EU)
Harmonized Standards:
EN 300 328: V2.1.1
EN 301 489-17: V3.2.0
EN 60950-1: 2006+A11+A12+A1+A2
EN 50371:2002
ATEX Directive (2014/34/EU)
Baseefa11ATEX0059X – Intrinsic Safety Certificate
Equipment Group II, Category 1 G
Ex ia IIC T4 Ga
Standards Used:
EN 60079-0: 2009 (A review against EN60079-0:2012 + A11:2013,
which is harmonized, shows no significant changes relevant to this
equipment so EN60079-0:2009 continues to represent “State of the
Art”)
EN 60079-11: 2007 (A review against EN60079-11:2012, which is
harmonized, shows no significant changes relevant to this equipment
so EN60079-11:2007 continues to represent “State of the Art”)

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EU Declaration of Conformity
No: RMD 1083 Rev. H
Page 3 of 3
ATEX Notified Body
SGS FIMKO OY [Notified Body Number: 0598]
P.O. Box 30 (Särkiniementie 3)
00211 HELSINKI
Finland
ATEX Notified Body for Quality Assurance
SGS FIMKO OY [Notified Body Number: 0598]
P.O. Box 30 (Särkiniementie 3)
00211 HELSINKI
Finland

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Quick Start Guide
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List of
Rosemount 781
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February 2019

Global Headquarters
Emerson Automation Solutions
6021 Innovation Blvd.
Shakopee, MN 55379, USA
[phone] or [phone]
[phone]
[e-mail]
North America Regional Office
Emerson Automation Solutions
8200 Market Blvd.
Chanhassen, MN 55317, USA
[phone] or [phone]
[phone]
RMT-NA.RCC[email protected]
Latin America Regional Office
Emerson Automation Solutions
1300 Concord Terrace, Suite 400
Sunrise, FL 33323, USA
[phone]
[phone]
[e-mail]
Linkedin.com/company/Emerson-Automation-Solutions
Twitter.com/Rosemount_News
Facebook.com/Rosemount
Youtube.com/user/RosemountMeasurement
Google.com/+RosemountMeasurement
Emerson Terms and Conditions of Sale are available upon request.
The Emerson logo is a trademark and service mark of Emerson
Electric Co.
Rosemount is a mark of one of the Emerson family of companies.
All other marks are the property of their respective owners.
© 2019 Emerson. All rights reserved.
Europe Regional Office
Emerson Automation Solutions
Neuhofstrasse 19a P.O. Box 1046
CH 6340 Baar
Switzerland
[phone]
[phone]
[e-mail]
Asia Pacific Regional Office
Emerson Automation Solutions
1 Pandan Crescent
Singapore 128461
[phone]
[phone]
Enquiri[email protected]n.com
Middle East and Africa Regional Office
Emerson Automation Solutions
Emerson FZE P.O. Box 17033
Jebel Ali Free Zone - South 2
Dubai, United Arab Emirates
[phone]
[phone]
[e-mail]
Quick Start Guide
00825-0100-4421, Rev DB
February 2019
*00825-0100-4421*