Honeywell STT700 SmartLine Guía del usuario

June 2017 STT700 Safety Manual i

STT700 SmartLine Temperature

Transmitter

HART® Communications Options

Safety Manual

34-TT-25-20

Revision 1

June 2017

ii STT700 Safety Manual June 2017

Copyrights, Notices and Trademarks

Revision 1, June 2017



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

June 2017 STT700 Safety Manual iii

About This Document

Release Information

STT700 SmartLine Transmitter HART® Communications Options Safety Manual, # 34-TT-25-20.

Revision

Date of Change

Details of Change

June 2017

1st release

References

The following list identifies publications that may contain information relevant to the information

in this document.

STT700 SmartLine Temperature Transmitter Specifications, # 34-TT-03-19

STT700 SmartLine Temperature Transmitter Quick Start Installation Guide, # 34-TT-25-19

STT700 SmartLine Temperature Transmitter User Manual, Document # 34-TT-25-17

STT700 SmartLine Temperature Transmitter HART/DE Option User’s Manual,

# 34-TT-25-18

Patent Notice

The Honeywell STT700 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.

iv STT700 Safety Manual June 2017

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 www.honeywellprocess.com

Honeywell Process Solutions www.honeywellprocess.com/temperature-transmitters/

Training Classes http://www.honeywellprocess.com/en-US/training

Telephone 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

[email protected]

June 2017 STT700 Safety Manual v

Terms and Abbreviations

1oo1

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

Dangerous Undetected failures

FMEDA

Failure Modes, Effects and Diagnostic Analysis

Functional

Safety

The ability of a system to carry out the actions necessary to achieve or

to 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

Mode, where the frequency of demands for operation made on a safety-

related system is no greater than one per year and no greater than twice

the proof test frequency.

PFDAVG

Average Probability of Failure on Demand

Safety

Freedom from unacceptable risk of harm

Safety

Assessment

The investigation to arrive at a judgment - based on evidence - of the

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).

vi STT700 Safety Manual June 2017

Contents

1 —Requirements .....................................................................................................1

Requirements for use of the manual...................................................................................................1

2 —Safety Function...................................................................................................2

Primary Safety Functions ....................................................................................................................2

Secondary Safety Functions ...............................................................................................................2

Systematic Integrity: SIL 3 Capable ....................................................................................................2

3 —Designing with the HONEYWELL STT700.........................................................3

Diagnostic Response Time .................................................................................................................3

Logic Solver Inputs..............................................................................................................................3

Reliability data and lifetime limit ..........................................................................................................3

Environmental limits ............................................................................................................................3

Application limits..................................................................................................................................3

4 —Installation with the HONEYWELL STT700........................................................4

Parameter settings ..............................................................................................................................4

5 —Operation and Maintenance with the HONEYWELL STT700............................5

Proof test .............................................................................................................................................5

Calibration procedure..........................................................................................................................6

Remote Parameter Configuration Verification.....................................................................................7

Repair and replacement......................................................................................................................8

Firmware update..................................................................................................................................8

6 - Security.................................................................................................................9

Security Guidelines..............................................................................................................................9

How to report a security vulnerability...............................................................................................9

June 2017 STT700 Safety Manual 1

1 —Requirements

Requirements for use of the manual

This section is intended for user’s who have our STT700 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 STT700 SmartLine

Temperature Transmitter can be found in the Exida and TÜV 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

2 STT700 Safety Manual June 2017

2 —Safety Function

Primary Safety Functions

The HONEYWELL STT700 measures the temperature (or mV or ohms) of a process and reports

the measurement within a safety accuracy of 2%.

Secondary Safety Functions

The HONEYWELL STT700 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 Integrity 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.

June 2017 STT700 Safety Manual 3

3 —Designing with the HONEYWELL STT700

Diagnostic Response Time

The HONEYWELL STT700 will report an internal failure within 20 minutes of fault occurrence

(worst case).

The transmitter will be put to burnout output if

1. PV is not updated in 7 seconds

2. 4-20mA Output Current is not as expected in 30 seconds

3. Electronics fault is found in 20 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 STT700, 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 current

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 STT700.

The HONEYWELL STT700 is intended for low demand mode applications up to SIL 2 for use in

a simplex (1oo1) configuration, depending on the PFDAVG calculation of the entire Safety

Instrumented Function. STT700 is classified as type B device according to IEC61508, having a

hardware fault tolerance of 0.

The development process of the HONEYWELL STT700 is certified up to SIL3, allowing

redundant use of the transmitter up to this Safety Integrity Level, depending the PFDAVG

calculation of the entire Safety Instrumented Function.

When using the HONEYWELL STT700 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 STT700. The failure rates of the HONEYWELL STT700 may increase sometime

after this period. Reliability calculations 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.

Environmental limits

The environmental limits of the HONEYWELL STT700 are specified in the customer spec sheet

as given in the STT700 Specification 34-TT-03-19.

Application limits

The application limits of the HONEYWELL STT700 are specified in the STT700 User Manual

34-TT-25-17. If the transmitter is used outside of the application limits the reliability data

provided becomes invalid.

4 STT700 Safety Manual June 2017

4 —Installation with the HONEYWELL STT700

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 STT700 Smart Transmitter User Manual. However please note that when the

device is in safety operation that the optional write protect must be set in software so that the

device is write protected and HART®devices must be disconnected. Also note that when the

device is in safety operation that the Latching and Break Detect parameters must be enabled.

See STT700 Smart Transmitter User Manuals for details concerning these parameters

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 STT700 can be found in the

Exida and TÜV 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

(Upscale/Downscale)

The transmitter is shipped with a default failsafe

direction of upscale (21.5 mA.). This is acceptable

for all high trip applications. For low trip

applications, the fail-safe direction is downscale

(3.58 mA.). Transmitter configuration for burnout

operation may be changed from Host (DD/DTM) 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.

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