Honeywell STT850 Quick Start Manual
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Honeywell STT850 Quick Start Manual

Honeywell STT850 Quick Start Manual

Smartline temperature transmitter
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STT850 SmartLine Temperature
Transmitter Quick Start Guide
34-TT-25-04, Revision 5, September 2017
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.
References
The following list identifies all documents that may be sources of reference for material
discussed in this publication.
STT850 SmartLine Transmitter User's Manual
STT850 SmartLine Transmitter HART/DE User Manual
STT850 Foundation Fieldbus Manual
STT850 Safety Manual
STT850 Pocket Configuration Guide
STT850 Specification
MC Toolkit User Manual (MCT202)
MC Toolkit User Manual (MCT404)
Honeywell Process Solutions
Document Title
Copyrights, Notices and Trademarks
Copyright 2017 by Honeywell
Revision 5, September 2017
Trademarks
SFC, SmartLine, STT850 are U.S.
registered trademarks of Honeywell Inc.
®
and FOUNDATION™ are
HART
trademarks of FieldComm Group™
Revision history
Rev.1 – 1
st
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
Document #
34-TT-25-03
34-TT-25-06
34-TT-25-07
34-TT-25-05
34-TT-00-01
34-TT-03-14
34-ST-25-20
34-ST-25-50

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Summary of Contents for Honeywell STT850

  • Page 1 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...

  • Page 2: Table Of Contents

    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 ...............

  • Page 3: Installation

    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.

  • Page 4: Mounting The Transmitter

    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.

  • Page 5: Bracket Mounting

    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.

  • Page 6: Optional Mounting Bracket

    SmartLine Temperature Transmitter 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, Figure 5 Optional Mounting Bracket Position bracket on 2-inch (50.8 mm) and install “U”...

  • Page 7: Conduit Entry Plugs And Adapters

    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.

  • Page 8: Wiring Connections And Power Up

    SmartLine Temperature Transmitter 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 Figure 7: HART and DE Transmitter Operating Ranges For DE operation, add 3.0V to these values.

  • Page 9: Figure 8: Transmitter 9-Screw Terminal Board And Grounding Screw

    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.

  • Page 10: Wiring Variations

    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 DE Single Input Wiring Diagram.

  • Page 11: Figure 10: De Dual Input Wiring Diagram

    Figure 10: DE Dual Input Wiring Diagram Resistance temperature detector (RTD) measurements use the 3 or 4 wire approach. Dual-input units wired for a 4-wire RTD will automatically disable Input 2. To minimize common noise problems in the application, a strap/jumper should be wired between terminals 6 and 8.

  • Page 12: Figure 11: Hart/Ff - Single Input Wiring Diagram

    SmartLine Temperature Transmitter 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 Quick Start Installation Guide September 2017...

  • Page 13: Figure 13: Hart/Ff Dual Input Wiring Diagram, Mixed Sensors

    For External C/J compensation, the first input is a thermocouple type and the second input is a 3-wire PT100 ohm RTD The 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...

  • Page 14: Digital Output Wiring

    SmartLine Temperature Transmitter 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 Figure 15. For Intrinsically Safe (IS) applications, the 4-20mA and the Digital Output must use separate IS Barriers.

  • Page 15: Explosion-Proof Conduit Seal

    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.

  • Page 16: Set The Jumpers For Hart/De

    SmartLine Temperature Transmitter 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 ATTENTION: Electrostatic Discharge failsafe action and Write Protect (ESD) hazards. Observe precautions option.

  • Page 17: Figure 16: Jumper Location Hart/De

    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 September 2017...

  • Page 18: Write Protect Jumper On Foundation Fieldbus (Ff)

    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.

  • Page 19: Configuration Guide

    SmartLine Temperature Transmitter CONFIGURATION GUIDE Table 2 shows the transmitter Basic Display Configuration. Table 3 shows the Advanced Display Configuration. Use these tables to configure the transmitter. Table 1 – Available Display Characteristics  Basic Suitable for basic process needs Display ...

  • Page 20: Table 2 - Basic Display Configuration

    Table 2 – Basic Display Configuration Adjust the LCD contrast level. LCD Contrast »»»»» Range from » (1) to »»»»»»»»» (9) Default: »»»»»»» (7) Rotation Time Select to enable or Enabled Screen Rotate disable the automatic Disabled rotation of Screens Select Screen 1 through 8 Select Screen to...
  • Page 21 SmartLine Temperature Transmitter Sensor n ID (HART/FF) (FF read only) Select Sensor ID for Input n for Database Sensor selected Sensor Type. (Input 1 updates take 30 Identifier selection or dual input model). seconds to complete. Do not interrupt power. Sensor n Wire 2-Wire, Select the number of lead wires...
  • Page 22 Sensor n CVD (HART or FF) Applicable for Enabled, Callendar - van Dusen RTD Read Only Pt100, Pt200, Disabled coefficients for Sensor n Parameter Pt500 and Pt1000 RTDs only For Redundant Loop Control Mode. When enabled, adds a constant Match PVs Enable, bias value to the Sensor 2 (HART only)
  • Page 23 102.0 seconds Disabling sets the loop output NAMUR Output Enabled and burnout levels to the (HART/DE) Disabled Honeywell levels This selection allows the loop DAC Zero Trim zero output 4mA value to be (HART/DE) trimmed. Loop must be Zero...
  • Page 24 This selection allows the user to force the DAC output to any Loop Test value between 3.8 and 20.8 mA. (HART/DE) Note: This selection will put the Loop DAC into Fixed Output Mode, as Test Loop must be indicated by the flashing output 12.000 removed from value.

  • Page 25: Table 3 - Advanced Display Configuration

    SmartLine Temperature Transmitter Menu item shows the Display current Firmware versions Read Only Firmware Electronics of the Display, Electronics Parameter Sensor Module and the Sensor Module Menu item shows the Read Only Protocol HART, DE, FF communications protocol Parameter Model Key Identifies the type and Read Only (HART/FF)
  • Page 26 Level 1 Level 2 Level 3 LRV (HART/DE) URV (HART/DE) MRV (HART only) Set LRV (HART/DE) Set URV (HART/DE) Dev Install Date (HART/FF) S1 Install Date (HART/FF) S2 Install Date (HART/FF) For details on the Display Advanced Display menus Information Comm Module please refer to the User’s Sensor Module...
  • Page 27 However, we assume no responsibility for its use. While we provide application assistance personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application.

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