STT 850 and STT 750 SmartLine Temperature Transmitter HART
Contents
1. 1 Bypass the safety PLC or take other appropriate action to avoid a false trip following Management of Change procedures 2 Send a HART command to the transmitter to go to the high alarm current output and verify that the analog current reaches that value This procedure tests for compliance voltage problems such as a low loop power supply voltage or increased wiring resistance This also tests for other possible failures 3 Send a HART command to the transmitter to go to the low alarm current output and verify that the analog current reaches that value This test checks for possible quiescent current related failures 4 Use the HART communicator to view detailed critical and non critical device status to ensure no alarms or warnings are present in the transmitter 5 Verify all safety critical configuration parameters 6 The WP jumper state should be checked to see if it is in WP mode first and then changed to Enable to ensure a change is detected by device while configuring and then moved back to WP after the configuration is complete Then it should be verified again 7 Calibrate the device as per calibration procedure given below 8 Restore the loop to full operation 9 Power cycle or cold reset to clear soft errors in memory RAM 10 Remove the bypass from the safety PLC or otherwise restore normal operation This test will detect approximately 30 of possible DU failures in the2. eti Dep eet unde ped re be lepra epe ii i re fa eee dne 2 Secondary Safety Functions si cece eee ee edere ere de Ede ta tane dede ua eee da ded tanien ia 2 Systematic Integrity SIL 3 Capable sssssssssssssesesseee eene nennen nnns en tenens 2 3 Designing with the HONEYWELL STT 850 amp STT 750 sess 3 Diagnostic RESPONSE TIfme uat adu parra cces teta kon ecu PEE ee RR nada Rene FERRE ALEA D ETARA 3 Logie So Mer A pU E coe cire i teeth rn Pe e tte dn b oe tnr ett ie sad 3 Reliability data and lifetime limit nennen enne nennen 3 Environmental llmits 5 n ter Eee Ug E das RERY HAUPT Gelade ERR TEES ERA Da 4 Applicatior lifmits nun ipeo penu ive oi dp uite pea ipd dp iain 4 4 Installation with the HONEYWELL STT 850 amp STT 750 sssssss 5 Parameter settings tiec t rq tr et eta tna Bee ese Bread etate Pepe arces EE edu yen 5 5 Operation and Maintenance with the HONEYWELL STT 850 amp STT 750 6 MEC 6 Calibration procedure oet m te Ope ee e D E e bep D nee be 7 Remote Parameter Configuration Verification ssssssssseseesen eee 8 Repair and replacetmient nrerin E etre pi tte ta atv eie e cx EE ace te P nter ite 9 Firmware updalte ceni me eue ane eu E c avo uv due eu uen ue Ed 9 vi STT 850 amp STT 750 Safety Manual August 2015 This page has been intentionally left blank August 2015 STT 850 amp ST
3. Honeywell STT 850 and STT 750 SmartLine Temperature Transmitter HART Communications Options Safety Manual 34 TT 25 05 Revision 2 August 2015 Honeywell Process Solutions Copyrights Notices and Trademarks Copyright 2015 by Honeywell Inc Revision 2 August 2015 While the information in this document is presented in good faith and believed to be accurate Honeywell disclaims any implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in the written agreement with and for its customers 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 Honeywell TDC 3000 SFC SmartLine PlantScape Experion PKS and TotalPlant are registered trademarks of Honeywell International Inc Other brand or product names are trademarks of their respective owners Honeywell Process Solutions 1250 W Sam Houston Pkwy S Houston TX 77042 STT 850 amp STT 750 Safety Manual August 2015 About This Document Release Information STT 850 and STT 750 SmartLine Transmitter HART Communications Options Safety Manual 34 TT 25 05 Revision Date of Change Details of Change 1 March 2014 1 Release STT 850 only 2 August 2015 STT 750 Temperature Transmitter added References The following list identifies pu
4. T 750 Safety Manual vii 1 Requirements Requirements for use of the manual This section is intended for user s who have our STT 850 amp STT 750 SmartLine Temperature Transmitter with the HART Communication option with SIL Any other option is not specifically covered by this manual IEC 61508 Ed 2 0 compliant hardware software revisions for the STT 850 amp STT 750 SmartLine Temperature Transmitter can be found in the Exida and T V Certification Reports In addition the most recent release information can be found in the following document https www honeywellprocess com library support Public Downloads SmartLineHARTTemperat ureFirmwareRevisions zip This document can be downloaded using the following link SmartLineHARTTemperatureFirmwareRevisions zip August 2015 STT 850 amp STT 750 Safety Manual 1 2 Safety Function Primary Safety Functions The HONEYWELL STT 850 amp STT 750 measures the temperature or mV Volts or ohms of a process and reports the measurement within a safety accuracy of 296 Secondary Safety Functions The HONEYWELL STT 850 amp STT 750 performs automatic diagnostics to detect internal failures and reports these failures via out of band signals on the 4 20 mA output The transmitter needs a power cycle in order to recover from this condition Systematic Integrity SIL 3 Capable SIL 3 Capability The product has met manufacturer design process requirements of Safety Inte
5. alculations based on the data listed in the FMEDA report for mission times beyond the lifetime may yield results that are too optimistic i e the calculated Safety Integrity Level will not be achieved August 2015 STT 850 amp STT 750 Safety Manual 3 Environmental limits The environmental limits of the HONEYWELL STT 850 amp STT 750 are specified in the customer spec sheets as given in the STT 850 amp STT 750 Specification 34 TT 03 14 Application limits The application limits of the HONEYWELL STT 850 amp STT 750 are specified in the User Manual If the transmitter is used outside of the application limits the reliability data provided becomes invalid 4 STT 850 amp STT 750 Safety Manual August 2015 4 Installation with the HONEYWELL STT 850 amp STT 750 The person with knowledge of safety operations will be required to do the installation and operation No special installation is required in addition to the standard installation practices outlined in the STT 850 amp STT 750 Smart Transmitter User Manual However please note that when the device is in safety operation the optional write protect must be set in hardware and software both so that the device is write protected and HART devices must be disconnected This can be done using the write protect jumper See STT 850 amp STT 750 Smart Transmitter User Manuals for details concerning the write protect jumper STT850 34 TT 25 03 STT 750 34 TT 25 13 Al
6. blications that may contain information relevant to the information in this document STT 850 e STT 850 SmartLine Temperature Transmitter Specifications 34 TT 03 14 e STT 850 SmartLine Temperature Transmitter Quick Start Installation Guide 34 TT 25 04 e STT 850 SmartLine Temperature Transmitter User Manual Document 34 TT 25 03 e STT 850 SmartLine Temperature Transmitter HART DE Option User s Manual 34 TT 25 06 STT 750 e STT 750 SmartLine Temperature Transmitter Specification 34 TT 03 16 e STT 750 SmartLine Temperature Transmitter Quick Start Installation Guide 34 TT 25 14 e ST T 750 SmartLine Temperature Transmitter User Manual Document 34 TT 25 13 e STT 750 SmartLine Temperature Transmitter HART Option User s Manual 34 TT 25 16 Patent Notice The Honeywell STT 850 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 August 2015 STT 850 amp STT 750 Safety Manual iii Support and Contact Information For Europe Asia Pacific North and South America contact details refer to the back page of this manual or the appropriate Honeywell Solution Support web site Honeywell Corporate Honeywell Process Solutions Training Classes www honeywellprocess com www honeywellprocess com temperature trans mitters http www honeywellprocess com en US training Telephon
7. e and Email Contacts Area Organization Phone Number United States and Canada Honeywell Inc 1 800 343 0228 Customer Service 1 800 423 9883 Global Technical Support Global Email Support Honeywell Process Solutions ask ssc honeywell com STT 850 amp STT 750 Safety Manual August 2015 Terms and Abbreviations 1001 One out of one Basic Safety The equipment must be designed and manufactured such that it protects against risk of damage to persons by electrical shock and other hazards and against resulting fire and explosion The protection must be effective under all conditions of the nominal operation and under single fault condition DU Dangerous Undetected failures FMEDA Failure Modes Effects and Diagnostic Analysis Functional The ability of a system to carry out the actions necessary to achieve or to Safety maintain a defined safe state for the equipment machinery plant apparatus under control of the system GTS Global Technical Support Center HART Highway Addressable Remote Transducer HFT Hardware Fault Tolerance Low demand Mode where the frequency of demands for operation made on a safety mode related system is no greater than one per year and no greater than twice the proof test frequency PFDave Average Probability of Failure on Demand Safety Freedom from unacceptable risk of harm Safety The investigation to arrive at a
8. en intentionally left blank STT 850 amp STT 750 Safety Manual August 2015 Sales and Service For application assistance current specifications pricing or name of the nearest Authorized Distributor contact one of the offices below ASIA PACIFIC EMEA AMERICAS Honeywell Process Solutions Honeywell Process Solutions Honeywell Process Solutions TAC hfs tac support honeywell com Phone 80012026455 or Phone TAC 1 800 423 9883 or 44 0 1344 656000 215 641 3610 Australia Sales 1 800 343 0228 Honeywell Limited Email Sales Phone 61 7 3846 1255 FP Sales Apps Honeywell com Email Sales FAX 61 7 3840 6481 Toll Free 1300 36 39 36 or FP Sales Apps Honeywell com Toll Free Fax TAC or 1300 36 04 70 hfs tac support honeywell com TAC China PRC Shanghai Honeywell China Inc 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 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 Shanghai City Centre 100 Jungi Road Shanghai China 20061 www honeywellprocess com hfs tac support h
9. ent signal and ensure that filtering is used to prevent a false diagnostic failure annunciation Reliability data and lifetime limit A detailed Failure Mode Effects and Diagnostics Analysis FMEDA report is available from HONEYWELL This report details all failure rates and failure modes common cause factors for applications with redundant devices and the expected lifetime of the HONEYWELL STT 850 amp STT 750 AND STT 750 The HONEYWELL STT 850 amp STT 750 is intended for low demand mode applications up to SIL 2 for use in a simplex 1001 configuration depending on the PFDayg calculation of the entire Safety Instrumented Function STT 850 amp STT 750 is classified as type B device according to IEC61508 having a hardware fault tolerance of 0 The development process of the HONEYWELL STT 850 amp STT 750 is certified up to SIL3 allowing redundant use of the transmitter up to this Safety Integrity Level depending the PFDAvyc calculation of the entire Safety Instrumented Function When using the HONEYWELL STT 850 amp STT 750 in a redundant configuration a common cause factor should be included in reliability calculations For reliability calculation details useful lifetime and SFF see the FMEDA report The reliability data listed the FMEDA report is only valid for the useful life time of the HONEYWELL STT 850 amp STT 750 The failure rates of the HONEYWELL STT 850 amp STT 750 may increase sometime after this period Reliability c
10. grity Level SIL 3 These are intended to achieve sufficient integrity against systematic errors of design by the manufacturer A Safety Instrumented Function SIF designed with this product must not be used at a SIL level higher than the statement without prior use justification by end user or diverse technology redundancy in the design This is a Type B device 2 STT 850 amp STT 750 Safety Manual August 2015 3 Designing with the HONEYWELL STT 850 amp STT 750 Diagnostic Response Time The HONEYWELL STT 850 amp STT 750 will report an internal failure within 12 minutes of fault Occurrence worst case The transmitter will be put to burnout output if 1 PV is not updated in 5 seconds 2 4 20mA Output Current is not as expected in 2 5 minutes 3 Electronics fault is found in 12 minutes worst case The transmitter needs to be power cycled in order to recover from the burnout condition Logic Solver Inputs The logic solver must be configured so that the engineering range in the transmitter matches the expected range of the logic solver To take advantage of the internal diagnostics in the STT 850 amp STT 750 the logic solver must be configured to annunciate an out of band current reading greater than 20 8 mA or less than 3 8 mA in standard configuration or greater than 20 5 mA or less than 3 8 mA with Namur configuration as a diagnostic fault The logic solver configuration must consider the slew time of the curr
11. judgment based on evidence of the Assessment safety achieved by safety related systems Further definitions of terms used for safety techniques and measures and the description of safety related systems are given in IEC 61508 4 SFF Safe Failure Fraction the fraction of the overall failure rate of a device that results in either a safe fault or a diagnosed unsafe fault SIF Safety Instrumented Function a set of equipment intended to reduce the risk due to a specific hazard a safety loop SIL Safety Integrity Level discrete level one out of a possible four for specifying the safety integrity requirements of the safety functions to be allocated to the E E PE safety related systems where Safety Integrity Level 4 has the highest level of safety integrity and Safety Integrity Level 1 has the lowest SIS Safety Instrumented System Implementation of one or more Safety Instrumented Functions A SIS is composed of any combination of sensor s logic solver s and final element s August 2015 STT 850 amp STT 750 Safety Manual V Contents Terms and Abbreviations cccccceesseceeeeseeceeeeneeeeeeeaeeeeeeesaeeeseesaeeeseesneeseesenseseesenseeeeseeeeseeneeaeeeenaes V t RegquUr IM Cl NG teeta SAN M MEM MM M coe 1 Requirements for use of the manual 0 0 2 eee eee eeeeeeeeenne ee ee ener ee eee ae ee eee ae ee ener nennen nnne 1 2 Se FUNCOM ciet bna eon Su AU A A ID A ME 2 Primary Safety FU rctioris rite
12. ld device output to 20mA will appear Press OK 9 Message Fld dev output 20 000mA equal to reference meter will appear with Yes No selection Select Yes and Enter 10 Message Returning fld dev to original output will appear Press Ok 11 Now Double click URV Correct method 12 Message WARN Loop should be removed from automatic control will appear Press Ok 13 Message Please enter calibration date will appear Enter the current date and press Ok 14 Message Please enter current calibration time in 24 hr clock format hour field will appear Enter the current time hour and press Ok 15 Message please enter current calibration time min field will appear Enter the current time minutes and press Ok 16 Message Apply URV Temperature will appear 17 Adjust the PV input to the required URV value Press OK 18 Message Press ok when Temperature is stable will appear Press Ok 19 The correct URV operation will happen 20 Message Loop may be returned to automatic control will appear Press OK 21 Follow the same procedure for Correct LRV replace URV in above procedure by LRV and Correct LRV operation will get executed August 2015 STT 850 amp STT 750 Safety Manual 7 Remote Parameter Configuration Verification When configuring the HONEYWELL STT 850 amp STT 750 through a
13. oneywell com Honeywell 34 ST 25 05 Rev 2 August 2015 2015 Honeywell International Inc
14. r by checking actual calibration of the transmitter August 2015 STT 850 amp STT 750 Safety Manual 5 5 Operation and Maintenance with the HONEYWELL STT 850 amp STT 750 Proof test The objective of proof testing is to detect failures within the HONEYWELL STT 850 amp STT 750 that are not detected by the automatic diagnostics of the transmitter Of main concern are undetected failures that prevent the safety instrumented function from performing its intended function The frequency of proof testing or the proof test interval is to be determined in reliability calculations for the safety instrumented functions for which the HONEYWELL STT 850 amp STT 750 is applied The Exida exSILentia tool is recommended for these calculations The proof tests must be performed more frequently than or as frequently as specified in the calculation in order to maintain the required safety integrity of the safety instrumented function The following proof test is recommended It consists of a simple HART driven min to max output test The results of the proof test need to be documented and this documentation should be part of a plant safety management system Any failures that are detected and that compromise functional safety should be reported to the Global Technical Support Center GTS See STT 850 amp STT 750 Smart Transmitter User Manual for more details STT850 34 TT 25 03 STT 750 34 TT 25 13 Step Action
15. remote host it is recommended that parameters that affect the 4 20ma analog output be verified using an alternate utility before using the transmitter in a SIS This helps to ensure that the parameters that are entered remotely by the host are not inadvertently changed from the user intended values The procedure can consist of listing the parameters and their values entered in the host application Then using an alternative application the same parameters are read back and noted in the same form The form is then signed dated and filed for future reference See Table 1 Example Verification Form for an example of this form Note that using the same host application to verify the remotely entered values will not provide as much assurance as using an alternate application Table 1 Example Verification Form Host Value Verified Value Verified By 8 STT 850 amp STT 750 Safety Manual August 2015 Repair and replacement Any failures that are detected and that compromise functional safety should be reported to the Global Technical Support Center GTS When replacing the HONEYWELL STT 850 amp STT 750 the procedures in the installation manual should be followed Firmware update The user will not be required to perform any firmware updates If the user has selected the firmware upgrade option it can be done by Honeywell service representative August 2015 STT 850 amp STT 750 Safety Manual 10 This page has be
16. so note that when the device is in safety operation the Latching and Break Detect parameters must be enabled The software write protect is also available in the device with a password to disable the software write protect The default password is 0000 It can be enabled disabled through HART host IEC 61508 Ed 2 0 compliant hardware software revisions for the STT 850 amp STT 750 can be found in the Exida and T V Certification Reports In addition the most recent release information can be found in the following document https www honeywellprocess com library support Public Downloads SmartLineHARTTemperat ureFirmwareRevisions zip Parameter settings The following parameters need to be set in order to maintain the designed safety integrity mA Fault action The transmitter is shipped with a default failsafe Upscale Downscale direction of upscale 21 5 mA This is acceptable for all high trip applications For low trip applications the fail safe direction is downscale 3 5 mA A jumper on the transmitter may be changed to accomplish this action see the User Manual Engineering Range All engineering range parameters must be entered to match the trip points in the safety logic solver These parameters must be verified during the installation and commissioning to ensure that the correct parameters are set in the transmitter Engineering range parameters can be verified by reading these parameters from the local display o
17. transmitter Proof Test Coverage An alternative proof test consisting of proof test 1 with actual two point temperature calibration plus verification of the temperature measurement will detect approximately 4896 of possible DU failures 6 STT 850 amp STT 750 Safety Manual August 2015 The person s performing the proof test of the HONEYWELL STT 850 amp STT 750 should be trained in SIS operations including transmitter maintenance and company Management of Change procedures Tools required are handheld communicator Calibration procedure The transmitter should be taken out of service The source for the input Temperature must be very precise and certified for correct operation Step Action 1 Connect the HART host and establish the communications Go to Online Device Setup Calibration Calibration Methods menu Go to D A Trim Message Connect reference meter will appear Connect the reference meter and press Ok 2 3 4 Message Warn loop should be removed from automatic control will appear Press Ok 5 6 Message Setting fld device output to 4mA will appear Press Ok Message Enter meter value 4 000mA will appear with a textbox to enter actual value observed on meter Enter the actual value and press Enter 7 Message Fld dev output 4 000mA equal to reference meter will appear with Yes No selection Select Yes and Enter 8 Message Setting fie
Download Pdf Manuals
Related Search