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Honeywell STT750 SmartLine User Manual
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Honeywell STT750 SmartLine User Manual

Temperature transmitter
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STT750 SmartLine
Temperature Transmitter
User's Manual
34-TT-25-13
Revision 4
September 2017
Honeywell Process Solutions

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Summary of Contents for Honeywell STT750 SmartLine

  • Page 1 STT750 SmartLine Temperature Transmitter User’s Manual 34-TT-25-13 Revision 4 September 2017 Honeywell Process Solutions...
  • Page 2 In no event is Honeywell liable to anyone for any indirect, special, or consequential damages. The information and specifications in this document are subject to change without notice.
  • Page 3 Honeywell’s family of STT750 Temperature Transmitters. Users who have a Honeywell STT750 SmartLine Temperature Transmitter configured for HART protocol are referred to the STT750 SmartLine Series HART Option User’s Manual, document number 34-TT-25-15. The configuration of your Transmitter depends on the mode of operation and the options selected for it with respect to operating controls, displays and mechanical installation.
  • Page 4 Smart Field Communicator Model STS 103 Operating Guide, Document # 34-ST-11-14 Patent Notice The Honeywell STT750 SmartLine Temperature Transmitter family is covered by one or more of the following U. S. Patents: 5,485,753; 5,811,690; 6,041,659; 6,055,633; 7,786,878; 8,073,098; and other patents pending.
  • Page 5 Symbol Descriptions and Definitions The symbols identified and defined in the following table may appear in this document. Symbol Definition ATTENTION: Identifies information that requires special consideration. TIP: Identifies advice or hints for the user, often in terms of performing a task.
  • Page 6 Symbol Description ® The Factory Mutual Approval mark means the equipment has been rigorously tested and certified to be reliable. The Canadian Standards mark means the equipment has been tested and meets applicable standards for safety and/or performance. The Ex mark means the equipment complies with the requirements of the European standards that are harmonized with the 94/9/EC Directive (ATEX Directive, named after the French "ATmosphere EXplosible").

  • Page 7: Table Of Contents

    3.1. Installation Site Evaluation ..................... 7 3.2. Honeywell MC Toolkit......................7 3.3. Display Installation Precautions ..................... 7 3.4. Mounting STT750 SmartLine Temperature Transmitters ............8 3.4.1. Summary......................... 8 3.4.2. Mounting Dimensions ....................10 3.4.3. Bracket Mounting Procedure ..................12 3.5.
  • Page 8 4.4. Changing the Default Failsafe Direction................28 4.4.1. Procedure to Establish Failsafe Operation ..............28 4.5. Monitoring the Display ......................30 4.5.1. Display ......................... 30 Maintenance ..........................31 5.1. Overview ..........................31 5.2. Preventive Maintenance Practices and Schedules ..............31 5.3.
  • Page 9 List of Figures Figure 1 – STT750 Major Assemblies ....................2 Figure 2 – Electronics Housing Components ..................2 Figure 3 –Typical STT750 Nameplate ....................3 Figure 4 – STT750 with adapter housing - Horizontal Wall Mounting ..........8 Figure 5 – STT750 No-Adapter Horizontal Wall Mounting ..............8 Figure 6 –...
  • Page 10 List of Tables Table 1 – Features and Options......................1 Table 2 – Available Display Characteristics ..................4 Table 3 – STT750 Standard Critical Diagnostics Messages ..............6 Table 4 – STT750 Standard Non-Critical Diagnostics Messages ............6 Table 5 – Three-Button Option Functions ................... 21 Table 6 –...

  • Page 11: Introduction

    This section is an introduction to the physical and functional characteristics Honeywell’s family of STT750 SmartLine Temperature Transmitters. 1.2. Features and Options The STT750 SmartLine Temperature Transmitter is available in a variety of models for measuring Thermocouples, RTDs, millivolts and Ohm. Table 1 lists the protocols, Human-Machine Interface (HMI), materials, approvals, and mounting bracket options for the STT750.

  • Page 12: Functional Characteristics

    (PV), including 4 to 20mA. An optional 3-button assembly is available to set up and make adjustments to the Transmitter. In addition, a Honeywell Multi-Communication (MC) Toolkit (not supplied with the Transmitter) can facilitate setup and adjustment procedures.

  • Page 13: Stt750 Smartline Transmitter Nameplate

    Electronic Housing (see Figure The user can also use the Honeywell MC Toolkit or other third-party hand-held to make any adjustments to an STT750 SmartLine Temperature Transmitter. STT750 Temperature Transmitter User’s Manual...

  • Page 14: Display

    1.6. Display Table 2 – Available Display Characteristics Display  Suitable for basic process needs  rotation in 90 increments  8 configurable screens  2 lines,16 characters  Standard units of measurement: °F, °C, °R, K, Ω, mV & % ...

  • Page 15: Application Design

    Table 3 are specific to the Transmitter, exclusive of those associated with HART protocols. HART diagnostic messages are listed and described in the STT750 SmartLine Temperature Transmitter HART Option User Manual, document number 34-TT-25-15. STT750 Temperature Transmitter User’s Manual Revision 4...

  • Page 16: Table 3 - Stt750 Standard Critical Diagnostics Messages

    Table 3 – STT750 Standard Critical Diagnostics Messages Critical Diagnostics (Failure Conditions) Temperature Sensor Module Failure Communication Module Failure Sensor Comm. Timeout Input Fault Table 4 – STT750 Standard Non-Critical Diagnostics Messages Non-Critical Diagnostics (Warning Conditions) Excess Cal Correct (Excess LRV Correct and/or Span correct for Sensor Input) Input Out of Range (Sensor Input Under Range or Over Range) Sensor Module Over Temperature...

  • Page 17: Installation And Startup

    3.1. Installation Site Evaluation Evaluate the site selected for the STT750 SmartLine Transmitter installation with respect to the process system design specifications and Honeywell’s published performance characteristics for your particular model. Some parameters that you may want to include in your site evaluation are: ...

  • Page 18: Mounting Stt750 Smartline Temperature Transmitters

    Transmitter models can be attached to a two-inch (50 millimeter) vertical or horizontal pipe using Honeywell’s optional angle brackets. Honeywell’s optional wall mounting bracket is also shown below: TRANSMITTER ENCLOSURE CAN BE ROTATED A TOTAL OF 90O FROM THE STANDARD MOUNTING POSITION Figure 4 –...

  • Page 19: Figure 6 - Stt750 Pipe Mount With Adapter Housing - Horizontal & Vertical

    Figure 6 – STT750 Pipe Mount with adapter housing - Horizontal & Vertical Figure 7 – STT750 Pipe Mount, Vertical Note 1: Figure 6 and 7. The 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. STT750 Temperature Transmitter User’s Manual Revision 4 Page 9...

  • Page 20: Mounting Dimensions

    3.4.2. Mounting Dimensions Refer to Honeywell drawing number 50094836 for detailed dimensions of the transmitter assembly. Abbreviated overall dimensions are also shown on the Specification Sheets for the transmitter models. This section assumes that the mounting dimensions have already been taken into account and the mounting area can accommodate the Transmitter.

  • Page 21: Figure 9 - Stt750 No Adapter Housing Dimensions

    Figure 9 – STT750 no adapter housing dimensions STT750 Temperature Transmitter User’s Manual Revision 4 Page 11...

  • Page 22: Bracket Mounting Procedure

    3.4.3. Bracket Mounting Procedure 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.

  • Page 23: Wiring A Transmitter

    3.5. Wiring a Transmitter 3.5.1. Loop Power Overview 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 11. Figure 11 – HART/DE Transmitter Operating Ranges 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.

  • Page 24: Figure 12 - Transmitter 9-Screw Terminal Board And Grounding Screw

    Figure 12 – Transmitter 9-Screw Terminal Board and Grounding Screw As shown in Figure 12, 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 25: Wiring Variations

    The positive and negative loop wires are connected to the positive (+) and negative (–) terminals on the terminal block in the Transmitter Electronics Housing. Barriers can be installed per Honeywell’s instructions for Transmitters to be used in intrinsically safe applications.

  • Page 26: Grounding And Lightning Protection

    3.5.4. Grounding and Lightning Protection Connect a wire from the Earth Ground Clamp or to the Internal Ground Connection (see Figure 12) to Earth Ground to make the protection effective. Use a size 8 AWG or (8.37mm ) bare or green covered wire for this connection.

  • Page 27: Input Sensor Wiring

    3.5.6. Input Sensor Wiring Connect the input sensors as shown in Figures below: – STT750 Thermocouple, RTD, mV, ohm and Volt Connections Figure 13 Figure 13 – STT750 Thermocouple, RTD, mV, ohm and Volt Connections STT750 Temperature Transmitter User’s Manual Revision 4 Page 17...

  • Page 28: Startup

    The actual steps in a startup procedure vary based on the type of Transmitter and the measurement application. In general, the procedures in this section are based on using Honeywell MC Toolkit, with a HART variant, to check the Transmitter input and output under static process conditions, and make adjustments as required initiating full operation with the running process.

  • Page 29: Constant Current Source Mode Procedure

    3.6.4. Constant Current Source Mode Procedure Figure 14 – Current Loop Test Connections 1. Refer to Figure 14 for test connections. Verify the integrity of electrical components in the output current loop. 2. Establish communication with the Transmitter. For these procedures, the values of components in the current loop are not critical if they support reliable communication between the Transmitter and the Toolkit.

  • Page 30: Operation

    4. Operation 4.1. Overview This section provides the information and processes involved for HART operation using the 3-button option. 4.2. Three-Button Operation The STT750 optional three-button interface is located under the nameplate and provides a user interface and operation capability without opening the transmitter. Figure 15 shows the location of the three-button option and the labels for each button.

  • Page 31: Menu Navigation

    Table 5 – Three-Button Option Functions Physical Display Action Button Increment Scroll to previous menu item in an active list. Left  Scroll through alphanumeric list to desired character (ex. for entering Tag names or numeric values) Previous Menu Item Decrement Scroll to next menu item in an active list.

  • Page 32: Editing A Numeric Value

    Table 6 – Three-Button Data Entry Screen Numeric data entry Text entry Symbol Display the high limit for this parameter. This symbol only appears in the left-most Not Available position of the data entry field. Display the low limit for this parameter. This symbol only appears in the left-most Not Available position of the data entry field.

  • Page 33: The Display Menu

    4.2.5. The Display Menu Table 7 – The Display Menus '#' in "Screen #" indicates the screen numbers 1, 2, 3, 4, 5, 6, 7, 8 Adjust the LCD contrast level. Range from » (1) to »»»»»»»»» LCD Contrast »»»»» Default: »»»»»»»...
  • Page 34 Sensor Cal Lo Pt ####.## Calibration low point for Sensor Press ↵ to enter menu Sensor Cal Hi Pt selection ####.## Calibration high point for Sensor ↑ and ↓ to Executing this selection corrects the select entry. Do Sensor Cal Lo Confirm Cal Low Point based on the input ↵...
  • Page 35 #. ## The limits for this value are 0.0 to 32.0 seconds Disabling sets the loop output and Enabled NAMUR Output burnout levels to the Honeywell Disabled levels This selection allows the loop zero DAC Zero Trim Press ↵ to output 4mA value to be trimmed.
  • Page 36 Units of HART SV Units Units for the Secondary Variable Press ↵ to transmitted SV enter menu This selection allows the user to selection enter the date a transmitter is installed. ↑ and ↓ to The Install Date is entered in select entry.

  • Page 37: Three Button Operation With No Display Installed

    ) and Span ( ) buttons together to set the span. 4. Verify that the PV output is now 20 mA. You can also use the MCT 202 and MCT404 Toolkit to make any adjustments to an STT750 SmartLine Temperature Transmitter. STT750 Temperature Transmitter User’s Manual Revision 4...

  • Page 38: Changing The Default Failsafe Direction

    4.4. Changing the Default Failsafe Direction For HART the transmitters are shipped with a default failsafe direction of upscale. This means that the Transmitter output will set the current output to upscale failsafe (maximum output) upon detection of a critical status. The failsafe direction can be changed from upscale to downscale (minimum output) by moving the top jumper located in the Electronic module.

  • Page 39: Table 8 - Hart Failsafe And Write Protect Jumpers

    Table 8 – HART Failsafe and Write Protect Jumpers Jumper Description Arrangements 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) 1.

  • Page 40: Monitoring The Display

    4.5. Monitoring the Display This section describes the information shown on the operator screens of the Display. 4.5.1. Display Figure 17 Figure 17 illustrates the Display format with Process Variable (PV).  The PV value is user-configurable. This field has 7 characters. The maximum allowable numeric value is 9999999 or -999999.

  • Page 41: Maintenance

    Replacement of damaged parts such as the Electronics Modules. 5.2. Preventive Maintenance Practices and Schedules The STT750 SmartLine Transmitter does not require any specific maintenance at regularly scheduled intervals. Maintenance of the STT750 is limited to ensuring that connections, seals and mounting are tight and secure.
  • Page 42 1. Turn OFF Transmitter power (Power removal is only required in accordance with area safety approvals. Power removal is only required in Class 1 Div 1 Explosionproof and Class 1 Div 2 environments).  When removing the Communications Module with power applied, the loop will go to 0V.
  • Page 43 (Steps 13 - 16 required for Field Upgrades Only) 12. Loosen the End Cap locking screw and unscrew the End Cap from the Field Wiring side of the transmitter housing. 13. Select the proper Communication/External Configuration upgrade kit label from the label strip provided and adhere to the inside of the Field Wiring compartment End Cap.

  • Page 44: Calibration

    For a Transmitter operating in analog mode, you must calibrate its output signal measurement range using any compatible hand-held communicator or a local display. One calibration option is to use the Honeywell MC Toolkit (MCT). Refer to the MC Toolkit (MCT202) User Manual, # 34-ST-25-20 or (MCT404) User Manual, Document # 34-ST-25-50.

  • Page 45: Troubleshooting

    However, this section covers the diagnostic messages that indicate critical conditions. Other than the critical conditions, additional detail is not provided. If you require assistance, contact your distributor or Honeywell Technical Support. All other messages are covered by the MC Toolkit Users’ Manual. 7.2.

  • Page 46: Parts List

    8. Parts List 8.1. Overview Individually saleable parts for the various Transmitter models are listed in this section. Some parts are illustrated for identification. Parts are identified and listed in the corresponding tables as follows:  Individually saleable parts are indicated in each figure by key number callout. ...

  • Page 47: Figure 19 - Pipe And Wall Bracket Parts

    Figure 19 – Pipe and Wall Bracket Parts Flat Pipe Mounting Bracket Carbon Steel 316 SS Flat Pipe Mounting Bracket 316 SS Marine Approved Mounting Bracket Wall Mounting Bracket Carbon Steel Wall Mounting Bracket 316 SS Angle Pipe Mounting Bracket Carbon Steel Angle Pipe Mounting Bracket 316 SS...

  • Page 48: Figure 20 - Electronic Housing, Display End

    Table 11 – Pipe and Wall Bracket Parts (Refer to Figure Part Number Description Unit 50090524-501 Carbon Steel Flat Pipe Bracket Mounting kit for all models 50090524-503 316 Stainless Steel Flat Pipe Bracket Mounting kit for all models 50092363-501 Carbon Steel Wall Bracket Mounting kit for all models 50092363-503 316 Stainless Steel Wall Bracket Mounting kit for all models 30752770-007 Carbon Steel Angle Pipe Bracket Mounting kit for all models 30752770-407 316 Stainless Steel Angle Pipe Bracket Mounting kit for all models...

  • Page 49: Figure 21 - Electronic Housing, Terminal Block End

    50049911-502 Display for Temperature 50086423—501 HART Electronics Module Assembly (PWA) without Reed sensor 50086423--502 HART Electronics Module Assembly (PWA) with Reed sensor 50049915-501 External Zero, Span & Config Buttons (HART) 30757503-005 Electronics housing seals kit (includes O-rings) Figure 21 – Electronic Housing, Terminal Block End STT750 Temperature Transmitter User’s Manual Revision 4 Page 39...

  • Page 50: Appendix A. Product Certifications

    Appendix A. PRODUCT CERTIFICATIONS A1. Safety Instrumented Systems (SIS) Installations For Safety Certified Installations, please refer to STT 850/750 Safety Manual 34-TT-25-05 for installation procedure and system requirements. A2. European Directive Information (EU) STT750 Temperature Transmitter User’s Manual Page 40 Revision 4...
  • Page 51 STT750 Temperature Transmitter User’s Manual Revision 4 Page 41...
  • Page 52 STT750 Temperature Transmitter User’s Manual Page 42 Revision 4...
  • Page 53 STT750 Temperature Transmitter User’s Manual Revision 4 Page 43...
  • Page 54 A3. Hazardous Locations Certifications AGENCY TYPE OF PROTECTION COMM Electrical Ambient CODE OPTION Parameters Temperature Explosion proof, Certificate: FM16US0157X: Class I, Division 1, Groups A, B, C, D; T5: Ta= -50 Dust Ignition Proof: to 85 Class II, III, Division 1, Groups 4-20 mA/ T6: Ta= -50 E, F, G;...
  • Page 55 Explosion proof, Certificate: 2689056: Class I, Division 1, Groups A, B, C, D; Dust Ignition Proof: 4-20 mA/ Class II, III, Division 1, Groups Note 1 C to 85 DE/HART/FF E, F, G; T4 Zone 1 Ex d IIC T4 Gb Ex tb IIIC T 95 C IP 66 Db DIP A21 Class II, III...
  • Page 56 Flameproof, Sira 14ATEX2046X: 4-20 mA/ II 2 G Ex d IIC T4 Gb Note 1 -50oC to 85oC DE/HART/FF II 2 D Ex tb IIIC T 95oC Db IP 66/ IP67 Intrinsically Safe, Sira 14ATEX2046X: -50oC to 70oC II 1 G Ex ia IIC T4 Ga 4-20 mA/ FISCO Field Device (Only for FF Note 2...
  • Page 57 Flameproof: 4-20 mA/ Ex d IIC T4 Gb Note 1 C to 85 DE/HART/FF Ex tb IIIC T 95 C IP 66 Db Intrinsically Safe: Ex ia IIC T4 Ga 4-20 mA/ Note 2 C to 70 INMETRO FISCO Field Device (Only for FF Option) DE/HART/FF Ex ia IIC T4 Non Sparking:...
  • Page 58 Notes 1. Operating Parameters: 4-20 mA/HART (Loop Terminal) Voltage= 11 to 42 V Current= 4-20 mA Normal (3.8 – 23 mA Faults) 2. Intrinsically Safe Entity Parameters For details see Control Drawing on page of the User’s manual SIL 2/3 IEC 61508 SIL 2 for non-redundant use and SIL 3 for redundant use according to EXIDA and TÜV Nord Sys Tec GmbH &...

  • Page 59: Warnings And Cautions

    A4. Marking ATEX Directive General: The following information is provided as part of the labeling of the transmitter: • Name and Address of the manufacturer • Notified Body identification: DEKRA Quality B.V., Arnhem, the Netherlands • For complete model number, see the Model Selection Guide for the particular model of Temperature Transmitter.
  • Page 60 A.5 Conditions of Use” for Ex Equipment”, Hazardous Location Equipment or “Schedule of Limitations”: Consult the manufacturer for dimensional information on the flameproof joints for repair. Painted surface of the STT750 may store electrostatic charge and become a source of ignition in applications with a low relative humidity less than approximately30% relative humidity where the painted surface is relatively free of surface contamination such as dirt, dust or oil.
  • Page 61 A.6 Control Drawing Note: DE, FF and PA do not apply to STT750 STT750 Temperature Transmitter User’s Manual Revision 4 Page 51...
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  • Page 67: Appendix B - Security

    Submit the requested information to Honeywell using one of the following methods: • Send an email to security@honeywell.com. • Contact your local Honeywell Process Solutions Customer Contact Centre (CCC) or Honeywell Technical Assistance Centre (TAC) listed in the “Support and Contact information” section of this document.

  • Page 68: Glossary

    Glossary American Wire Gauge Callendar-Van Dusen is an equation that describe the relationship between resistance (R) and temperature (t) of platinum resistance thermometers (RTD) Electromagnetic Interference Field Termination Assembly Hertz Lower Range Limit Lower Range Value mAdc Milliamperes Direct Current millivolts Newton meters...
  • Page 69 Three Button Operation with no Display Installed .. 27 Glossary............ 58 Three-Button Operation .......... 20 Grounding and Lightning Protection ..16 Optional 3-Button Assembly......4 Honeywell MC Toolkit .........7 Parts List ........... 36 Patent Notice ..........iv PRODUCT CERTIFICATIONS ......40 STT750 Temperature Transmitter User’s Manual...
  • Page 70 References ..........iv Telephone and Email Contacts ....iv Release Information ........iii Three Button Operation with no Display Installed ..........27 Span Adjustments ........... 27 Zero Adjustments ............ 27 Safety ............5 Three-Button Operation ......20 Accuracy ..............5 Data Entry ..............21 Diagnosis Messages ...........
  • Page 71 Phone: (86-21) 5257-4568 Fax: (86-21) 6237-2826 Singapore Honeywell Pte Ltd. Phone: +(65) 6580 3278 Fax: +(65) 6445-3033 South Korea Honeywell Korea Co Ltd Phone: +(822) 799 6114 Fax: +(822) 792 9015 STT750 Temperature Transmitter User’s Manual Revision 4 Page 61...
  • Page 72 For more information To learn more about SmartLine Transmitters, visit www.honeywellprocess.com Or contact your Honeywell Account Manager Process Solutions Honeywell 1250 W Sam Houston Pkwy S Houston, TX 77042 Honeywell Control Systems Ltd Honeywell House, Skimped Hill Lane Bracknell, England, RG12 1EB...

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