Honeywell STT850 SMARTLINE User manual

STT850 SmartLine Temperature
Transmitter Quick Start Guide
34-TT-25-04, Revision 5, September 2017
Honeywell Process Solutions
This document provides descriptions
and procedures for the Quick Installation
of Honeywell’s family of SmartLine
Temperature Transmitters.
The SmartLine Temperature Transmitter
is available in a variety of models for
measuring Ohms, mV and temperature
from RTD’s and thermocouples.
For full details refer to the manuals
listed below for Protocols, User Interface
(HMI) Operation, Installation,
Configuration, Calibration, Maintenance,
Parts, Safety and Approvals etc.
including options.
Various other documents are available on
the CD supplied with your shipment.
Documents in hardcopy can be ordered.
Copyrights, Notices and Trademarks
Copyright 2017 by Honeywell
Revision 5, September 2017
Trademarks
SFC, SmartLine, STT850 are U.S.
registered trademarks of Honeywell Inc.
HART®and FOUNDATION™ are
trademarks of FieldComm Group™
Revision history
Rev.1 –1st release
Rev.2 –Fieldbus added
Rev.3 –Digital Output and CDV added.
Rev.4 –Angle Brackets added.
Operating ranges chart and Display
table updated
Rev.5 –Mtg and wiring drwg updates
References
The following list identifies all documents that may be sources of reference for material
discussed in this publication.
Document Title
Document #
STT850 SmartLine Transmitter User’s Manual
34-TT-25-03
STT850 SmartLine Transmitter HART/DE User Manual
34-TT-25-06
STT850 Foundation Fieldbus Manual
34-TT-25-07
STT850 Safety Manual
34-TT-25-05
STT850 Pocket Configuration Guide
34-TT-00-01
STT850 Specification
34-TT-03-14
MC Toolkit User Manual (MCT202)
MC Toolkit User Manual (MCT404)
34-ST-25-20
34-ST-25-50

SmartLine Temperature Transmitter
2 Quick Start Installation Guide September 2017
Table of Contents
Installation.................................................................................................................... 3
Features and options.................................................................................................... 3
Mounting the Transmitter ............................................................................................. 4
Bracket Mounting..................................................................................................5
Optional Mounting Bracket....................................................................................6
Conduit Entry Plugs and Adapters ............................................................................... 7
Wiring Connections and Power Up...............................................................................8
Wiring Variations.................................................................................................10
Input Sensor Wiring............................................................................................. 10
Digital Output Wiring........................................................................................... 14
Explosion-Proof Conduit Seal ....................................................................................15
Set the Jumpers For HART/DE.................................................................................. 16
Setting Failsafe Direction and Write Protect Jumpers.........................................16
Write Protect Jumper on Foundation Fieldbus (FF)....................................................18
Configuration Guide ...................................................................................................19
Tables
Table 1 –Available Display Characteristics ...............................................................19
Table 2 –Basic Display Configuration........................................................................20
Table 3 –Advanced Display Configuration ................................................................ 25
Figures
Figure 1 –Electronics Housing Components ............................................................... 3
Figure 2 –STT850 with adapter housing - Horizontal Wall Mounting...........................4
Figure 3 - STT850 Pipe Mount, Vertical....................................................................... 4
Figure 4 - STT850 Pipe Mount with adapter housing - Horizontal & Vertical................5
Figure 5: Flat and Angle Mounting Brackets secured to Horizontal or Vertical Pipe ....6
Figure 6: Electronic Housing Conduit Entries...............................................................7
Figure 7: HART and DE Transmitter Operating Ranges ..............................................8
Figure 8: Transmitter 9-Screw Terminal Board and Grounding Screw.........................9
Figure 9: DE Single Input Wiring Diagram.................................................................. 10
Figure 10: DE Dual Input Wiring Diagram.................................................................. 11
Figure 11: HART/FF –Single Input Wiring Diagram...................................................12
Figure 12: HART/FF –Dual Input Wiring Diagram.....................................................12
Figure 13: HART/FF Dual Input Wiring Diagram, mixed sensors...............................13
Figure 14: Digital Output Connections for mA Load (HART only) ..............................14
Figure 15: Digital Output Connections for PLC Counting Input (HART only)..............14
Figure 16: Jumper Location HART/DE....................................................................... 17
Figure 17: Jumper Settings........................................................................................ 17
Figure 18: Fieldbus Write Protect............................................................................... 18

September 2017 Quick Start Installation Guide 3
INSTALLATION
Evaluate the site selected for the Transmitter installation with respect to the process
system design specifications and Honeywell’s published performance characteristics
for your particular model.
Temperature extremes can affect display quality. The display can become unreadable
at temperature extremes; however, this is only a temporary condition. The display will
again be readable when temperatures return to within operable limits.
FEATURES AND OPTIONS
The STT850 is packaged in one major assembly: the Electronics Housing.
The elements in the Electronic Housing are connected to the process sensors,
measure the process variables, respond to setup commands and execute the software
and protocol for the different temperature measurement types. Figure 1 shows the
assemblies in the Electronics Housing with available options.
Figure 1 –Electronics Housing Components
The Transmitter measures process Temperature and outputs a signal proportional to
the measured process variable (PV), including 4 to 20mA.
An optional 3-button assembly is located under the nameplate and provides a user
interface and operation capability without opening the transmitter to set up and make
adjustments to the Transmitter.

SmartLine Temperature Transmitter
4 Quick Start Installation Guide September 2017
MOUNTING THE TRANSMITTER
Transmitter models can be attached to a two-inch (50 millimeter) vertical or horizontal
pipe using Honeywell’s optional angle; alternately you can use your own bracket.
Honeywell’s optional wall mounting bracket is also shown below:
For Housing with Adaptor refer to Honeywell drawings 50095917 (Pipe mount) and
50095918 (Wall mount) for detailed mounting specifications.
For Housing without adaptor refer to Honeywell drawings 32306827 (No-Adaptor, Pipe
mount) and 32306828 (No-adaptor, Wall mount).
TRANSMITTER ENCLOSURE CAN BE ROTATED A TOTAL OF 90O FROM THE
STANDARD MOUNTING POSITION
Figure 2 –STT850 with adapter housing - Horizontal Wall Mounting
Figure 3 - STT850 Pipe Mount, Vertical

September 2017 Quick Start Installation Guide 5
Figure 4 - STT850 Pipe Mount with adapter housing - Horizontal & Vertical
* Note 1: In Figures 2, 3 and 4, Housing adapter may not be present on all transmitter
models. If the housing adapter is not present, subtract 24,5mm (0,96 inches) from the
dimension specified.
Refer to the User’s manual for dimension drawings
Bracket Mounting
If you are using an optional bracket, start with Step 1.
1. Align the two mounting holes in the transmitter with the two slots in the
mounting bracket and assemble the (2) M8 hex cap screws, (2)
lockwashers and (2) flat washers provided. Rotate transmitter
assembly to the desired position and torque the M8 hex cap screws to
27,0 Nm/20,0 Lb-ft maximum.
2. Pipe Mount Option: Refer to Figure 5. Position the bracket on a 2-inch
(50.8 mm) horizontal or vertical pipe, and install a “U” bolt around the
pipe and through the holes in the bracket. Secure the bracket with the
nuts, flat washers and lock washers provided.

SmartLine Temperature Transmitter
6 Quick Start Installation Guide September 2017
3. Wall Mount Option: Position the bracket on the mounting surface at the
desired location and secure the bracket to the mounting surface using
the appropriate hardware (Wall mounting hardware requirements to be
determined and supplied by the end user). Existing mounting bracket,
see Figure 5
Optional Mounting Bracket
Position bracket on 2-inch (50.8 mm) and install “U” bolt around pipe and through
holes in bracket. Secure with nuts and lock washers provided. Optional mounting
bracket, see Figure 5
HORIZONTAL FLAT PIPE VERTICAL FLAT PIPE
HORIZONTAL ANGLE PIPE VERTICAL ANGLE PIPE
Figure 5: Flat and Angle Mounting Brackets secured to Horizontal or Vertical Pipe

September 2017 Quick Start Installation Guide 7
CONDUIT ENTRY PLUGS AND ADAPTERS
Procedures
It is the User/Installer’s responsibility to install the Transmitters in accordance with
national and local code requirements. Conduit entry plugs and adapters shall be
suitable for the environment, shall be certified for the hazardous location when
required and acceptable to the authority having jurisdiction for the plant.
CONDUIT ENTRY PRECAUTIONARY NOTICE
THE CONDUIT/CABLE GLAND ENTRIES OF THIS PRODUCT ARE SUPPLIED
WITH PLASTIC DUST CAPS WHICH ARE NOT TO BE USED IN SERVICE.
IT IS THE USER’S RESPONSIBILITY TO REPLACE THE DUST CAPS WITH
CABLE GLANDS, ADAPTORS AND/OR BLANKING PLUGS WHICH ARE
SUITABLE FOR THE ENVIRONMENT INTO WHICH THIS PRODUCT WILL BE
INSTALLED. THIS INCLUDES ENSURING COMPLIANCE WITH HAZARDOUS
LOCATION REQUIREMENTS AND REQUIREMENTS OF OTHER GOVERNING
AUTHORITIES AS APPLICABLE.
Figure 6: Electronic Housing Conduit Entries
Note. No plugs come installed in the housings. All housings come with temporary
plastic dust protectors (red) installed and are not certified for use in any installation.

SmartLine Temperature Transmitter
8 Quick Start Installation Guide September 2017
WIRING CONNECTIONS AND POWER UP
Summary
The transmitter is designed to operate in a two-wire power/current loop with loop
resistance and power supply voltage within the HART operating range shown in
Figure 7.
Figure 7: HART and DE Transmitter Operating Ranges
For DE operation, add 3.0V to these values.
Loop wiring is connected to the Transmitter by simply attaching the positive (+) and
negative (–) loop wires to the positive (+) and negative (–) terminals on the
Transmitter terminal block in the Electronics Housing shown in Figure 8.
Connect the Loop Power wiring shield to earth ground only at the power supply end.
Note that the Transmitter is not polarity-sensitive.

September 2017 Quick Start Installation Guide 9
Figure 8: Transmitter 9-Screw Terminal Board and Grounding Screw
As shown in Figure 8, each Transmitter has an internal terminal to connect it to earth
ground. Optionally, a ground terminal can be added to the outside of the Electronics
Housing. Grounding the Transmitter for proper operation is required, as doing so
tends to minimize the possible effects of noise on the output signal and affords
protection against lightning and static discharge. An optional lightning terminal block
can be installed in place of the non-lightning terminal block for Transmitters that will
be installed in areas that are highly susceptible to lightning strikes. As noted above,
the Loop Power wiring shield should only be connected to earth ground at the power
supply end.
Wiring must comply with local codes, regulations and ordinances.
Grounding may be required to meet various approval body certification,
for example CE conformity. Refer to Appendix A of this document for details.
Note: Terminal #3 is for loop test and is not applicable for Fieldbus option.
Terminal #4 is for Digital Output and is not applicable for Fieldbus option.
For HART and DE the Transmitter is designed to operate in a two-wire power/current
loop with loop resistance and power supply voltage within the operating range; see
Figure 7.With an optional remote meter, the voltage drop for this must be added to
the basic power supply voltage requirements to determine the required Transmitter
voltage and maximum loop resistance. Additional consideration is required when
selecting intrinsic safety barriers to ensure that they will supply at least minimum
Transmitter voltage, including the required 250 ohms of resistance (typically within
the barriers) needed for digital communications.

SmartLine Temperature Transmitter
10 Quick Start Installation Guide September 2017
Wiring Variations
The above procedures are used to connect power to a Transmitter. For loop wiring
and external wiring, detailed drawings are provided for Transmitter installation in
non-intrinsically safe areas and for intrinsically safe loops in hazardous area locations.
This procedure shows the steps for connecting power to the transmitter.
Wiring must comply with local codes, regulations and ordinances. Grounding
may be required to meet various approval body certification, for example CE
conformity. Refer to the SmartLine Transmitter User’s Manual 34-TT-25-03
(STT850) or 34-TT-25-06 (STT850) for details.
Input Sensor Wiring
Connect the input sensors as shown in Figures below:
Figure 9:DE Single Input Wiring Diagram.
Figure 9: DE Single Input Wiring Diagram
RTD Thermocouple, mV and Ohm Connections

September 2017 Quick Start Installation Guide 11
Figure 10:DE Dual Input Wiring Diagram
oResistance temperature detector (RTD) measurements
use the 3 or 4 wire approach.
oDual-input units wired for a 4-wire RTD will automatically
disable Input 2.
oTo minimize common noise problems in the application, a
strap/jumper should be wired between terminals 6 and 8.
For differential T/C operation on DE Models, a second strap/jumper should be wired
between terminals 6 and 7. Do not install this strap for Non-DE models. The output
for differential operation is calculated as T/C 1 - T/C 2.
o
Figure 10: DE Dual Input Wiring Diagram
Thermocouple and RTD Connections (not applicable to single input sensor)

SmartLine Temperature Transmitter
12 Quick Start Installation Guide September 2017
Figure 11: HART/FF –Single Input Wiring Diagram
RTD Thermocouple, mV and Ohm Connections
Figure 12: HART/FF –Dual Input Wiring Diagram
RTD Thermocouple, mV and Ohm Connections

September 2017 Quick Start Installation Guide 13
Figure 13:HART/FF Dual Input Wiring Diagram
oFor External C/J compensation, the first input is a
thermocouple type and the second input is a 3-wire
PT100 ohm RTD
oThe STT850 can have different sensor types on its inputs
for split range or averaging applications
Figure 13: HART/FF Dual Input Wiring Diagram, mixed sensors
Remote C/J and Mixed Sensors Connections

SmartLine Temperature Transmitter
14 Quick Start Installation Guide September 2017
Digital Output Wiring
Digital Output is available only on HART transmitters. The Digital Output should not
use the same power supply as used to support the 4-20mA transmitter output. See
Figure 14 and Figure 15.
For Intrinsically Safe (IS) applications, the 4-20mA and the Digital Output must use
separate IS Barriers.
Figure 14: Digital Output Connections for mA Load (HART only)
For best performance, it is recommended that:
Digital Output wires should be in a separate shielded twisted pair cable,
do not use the same cable as used for the Loop or the Sensor wires
If using the same power supply to operate both the 4-20mA Loop and
the Digital Output, then make the interconnections to the power supply
terminals directly at the power supply
NOTE: Intrinsically Safe Installations require the use of separate IS Barriers
for the 4-20mA output and for the Digital Output connections
Figure 15: Digital Output Connections for PLC Counting Input (HART only)

September 2017 Quick Start Installation Guide 15
EXPLOSION-PROOF CONDUIT SEAL
When installed as explosion proof in a Division 1 Hazardous Location, keep
covers tight while the Transmitter is energized. Disconnect power to the
Transmitter in the non-hazardous area prior to removing end caps for service.
When installed as non-incendive equipment in a Division 2 hazardous location,
disconnect power to the Transmitter in the non-hazardous area, or determine that
the location is non-hazardous before disconnecting or connecting the Transmitter
wires.
Transmitters installed as explosion proof in Class I, Division 1, Group A Hazardous
(classified) locations in accordance with ANSI/NFPA 70, the US National Electrical
Code, require a LISTED explosion proof seal to be installed in the conduit, within 18
inches (457.2 mm) of the Transmitter. Crouse-Hinds type EYS/EYD or EYSX/EYDX
are examples of LISTED explosion proof seals that meet this requirement.
Transmitters installed as explosion proof in Class I, Division 1, Group B, C or D
hazardous (classified) locations do not require that explosion proof seal be installed
in the conduit.
Step
Action
1
See Figure 8, above, for parts locations. Loosen the end cap lock
using a 1.5 mm Allen wrench.
2
Remove the end cap cover from the terminal block end of the
Electronics Housing
3
Feed loop power leads through one end of the conduit entrances on
either side of the Electronics Housing. The Transmitter accepts up to
16 AWG wire.
4
Connect the positive loop power lead to the positive (+) terminal and
the negative loop power lead to the negative (-) terminal. Note that
the Transmitter is not polarity-sensitive.
5
Feed input sensor wires through the 2nd conduit entrance and
connect wire per wiring diagrams
6
Replace the end cap, and secure it in place

SmartLine Temperature Transmitter
16 Quick Start Installation Guide September 2017
SET THE JUMPERS FOR HART/DE
Setting Failsafe Direction and Write Protect Jumpers
The SmartLine Temperature
Transmitter (DE or HART) provides
two jumpers to set the desired
failsafe action and Write Protect
option. See Figure 16
The top jumper on the electronics
module sets the Failsafe direction.
The default setting is up-scale
failsafe.
Up Scale drives the loop to a value
greater than 21mA while Down
Scale drives the loop to a value less
than 3.8mA.
You can change the failsafe
direction by moving the Failsafe
Jumper (top jumper) to the desired
position (UP or DOWN).
If your transmitter is operating in DE
mode, the upscale failsafe action
will cause the transmitter to
generate a
“+ infinity” digital signal, while a
downscale failsafe will cause the
transmitter to generate a “– infinity”
digital signal.
The bottom jumper sets the Write
Protect. The default setting is OFF
(Un-protected).
When set to the On (Protected)
position, Changed configuration
parameters cannot be written to the
transmitter.
When set to the OFF (Un-protected)
position, Changed configuration
parameters can be written to the
transmitter.
ATTENTION: Electrostatic Discharge
(ESD) hazards. Observe precautions
for handling electrostatic sensitive
devices
Step
Action
1
Turn OFF Transmitter power.
2
Loosen the end-cap lock, and
unscrew the end cap from the
Electronics side of the Transmitter
housing.
3
If there is a Display module, carefully
depress the tabs on the sides of the
Display Module and pull it off.
If necessary, move the interface
connector from the Communication
Module. Do not discard connector
4
Set the Failsafe Jumper (top jumper)
to the desired action (UP or DOWN).
And the Write Protect jumper
(Bottom jumper) to the desired
behavior (Protected or Unprotected)
See Figure 17 for jumper positioning.
5
If applicable, re-install the Display
module as follows:
•Orient the display as desired.
•Install the Interface Connector in
the Display module such that it will
mate with the socket for the display
in the Communication module.
•Carefully line up the display, and
snap it into place. Verify that the two
tabs on the sides of the display latch.
6
Screw on the end cap and tighten the
end-cap lock. Turn ON Transmitter
power.

September 2017 Quick Start Installation Guide 17
Figure 16: Jumper Location HART/DE
Jumper Settings
Description
Failsafe = UP (High)
Write Protect = OFF (Not Protected)
Failsafe = DOWN (Low)
Write Protect = OFF (Not Protected)
Failsafe = UP (High)
Write Protect = ON (Protected)
Failsafe = DOWN (Low)
Write Protect = ON (Protected)
Figure 17: Jumper Settings

18 Quick Start Installation Guide September 2017
WRITE PROTECT JUMPER ON FOUNDATION FIELDBUS (FF)
On Foundation Fieldbus transmitters there is no Failsafe jumper selection but there
is a Write Protect jumper.
The bottom jumper sets the Write Protect. The default setting is OFF (Un-protected).
When set to the On (Protected) position, changed configuration parameters cannot
be written to the transmitter.
When set to the OFF (Un-protected) position, changed configuration parameters can
be written to the transmitter.
ATTENTION: Electrostatic Discharge (ESD) hazards. Observe
precautions for handling electrostatic sensitive devices.
WARNING! PERSONAL INJURY: Risk of electrical shock. Disconnect
power before proceeding. HAZARDOUS LIVE voltages greater than
30 Vrms, 42.4 Vpeak, or 60 VDC may be accessible. Failure to
comply with these instructions could result in death or serious injury.
Step
Action
1
Turn OFF Transmitter power.
2
Loosen the end-cap lock, and unscrew the end cap from the
Electronics side of the Transmitter housing.
3
If applicable, carefully depress the tabs on the sides of the Display
Module and pull it off. If necessary, move the interface connector from
the Communication Module to the display module to provide the
preferred orientation of the display module in the window.
If necessary, move the interface connector from the Communication
Module to the display module to provide the preferred orientation of
the display module in the window.
4
Set the Write Protect jumper (Bottom jumper) to the desired behavior
(Protected or Unprotected). See Figure 18 for jumper positioning.
5
Screw on the end cap and tighten the end-cap lock.
6
Turn ON Transmitter power.
Image
Description
Fieldbus SIM Mode = OFF
Write Protect = OFF (Not Protected)
Fieldbus SIM Mode = OFF
Write Protect = ON (Protected)
Fieldbus SIM Mode = ON
Write Protect = OFF (Not Protected)
Figure 18: Fieldbus Write Protect

SmartLine Temperature Transmitter
September 2017 Quick Start Installation Guide 19
CONFIGURATION GUIDE
Table 2 shows the transmitter Basic Display Configuration.
Table 3shows the Advanced Display Configuration. Use these tables to configure
the transmitter.
Table 1 –Available Display Characteristics
Basic
Display
Suitable for basic process needs
360orotation in 90oincrements
8 configurable screens
2 lines,16 characters
Standard units of measurement: °F, °C, °R, K, Ω, mV & %
(Custom Units available for Fieldbus variant)
Diagnostic messaging
Advanced
Display
Suitable for custom and complex process needs
360° rotation in 90° increments
Three (3) configurable screen formats with configurable
rotation timing
oLarge process variable (PV)
oPV with bar graph
oPV with trend (1-999 hours (allows 31+ days),
configurable)
Eight (8) screens with 3-30 seconds rotation timing
Standard engineering units (Custom Units available for
Fieldbus variant)
Diagnostic alerts and diagnostic messaging
Multiple language support:
oEnglish, French, German, Spanish, Russian, Italian
and Turkish
oEnglish, Chinese (Kanji), Japanese
Supports 3-button configuration and calibration
Supports transmitter messaging, and maintenance mode
indications

20 Quick Start Installation Guide September 2017
Table 2 –Basic Display Configuration
LCD Contrast
»»»»»
Adjust the LCD contrast
level.
Range from » (1) to
»»»»»»»»» (9)
Default: »»»»»»» (7)
Press ↵to
enter
menu
selection
↑ and ↓ to
select
entry.
↵to enter
Rotation Time
Screen Rotate
Enabled
Disabled
Select to enable or
disable the automatic
rotation of Screens
Select Screen
(HART/DE)
1 through 8
Select Screen to
configure.
Screen #
(HART/DE)
Enabled/Disabled
Select to enable or
disable the screen for
display and configuration
Select # PV
(HART/DE)
Database
updates take 30
seconds to
complete. Do not
interrupt power.
Loop PV
Sensor 1
Sensor 2
CJ Temperature
Sensor 1
Resistance
Sensor 2
Resistance
Loop Output
Percent Output
Select the Process
Variable (PV) that will be
shown on the screen.
Sensor Resistance is only
available for RTDs and
will read 0 for
thermocouples
Screen Decimal
(HART/DE)
None
Select the PV decimal
resolution to be shown on
selected screen from list.
X.X
X.XX
X.XXX
Screen Units
(HART/DE)
(Writable only for
TC/RTD inputs)
°C, °F,°R, K
Choose appropriate
engineering units from list
Range/Cal Units
(Visible for TC and
RTD inputs only)
°C, °F, °R, K
Select the ranging and
calibration temperature
units
Select Input
(HART/FF)
(Dual input only)
1, 2
Select Input number to
configure, referred to as
"n" in subsequent menu
items
Sensor n Type
(Read only for FF)
Database updates
take 30 seconds to
complete. Do not
interrupt power.
mV, TC, RTD,
Ohm
Select Sensor Type.