ABB SensyTemp TSP111 Montageanleitung

SIL-Safety Instructions

SM/TSP/SIL-EN

Temperature Sensors

SensyTemp TSP

Information regarding functional safety

Blinder Text

2 SensyTemp TSP SM/TSP/SIL-EN

Temperature Sensors

SensyTemp TSP

SIL-Safety Instructions

SM/TSP/SIL-EN

05.2007

Manufacturer:

ABB Automation Products GmbH

Borsigstraße 2

63755 Alzenau

Germany

Tel.: +49 551 905-534

Fax: +49 551 905-555

[email protected]b.com

Subject to change without notice

This document is protected by copyright. It assists the user with the safe and efficient operation of the

device. The contents may not be copied or reproduced in whole or in excerpts without prior approval of

the copyright holder.

Contents

SM/TSP/SIL-EN SensyTemp TSP 3

1Field of Application .............................................................................................................................................4

2Acronyms and abbreviations .............................................................................................................................4

3Relevant standards .............................................................................................................................................6

4Other applicable documents and papers..........................................................................................................6

5Terms and definitions .........................................................................................................................................7

6Safety function.....................................................................................................................................................8

6.1 Overview ........................................................................................................................................................8

6.2 SensyTemp TSP temperature sensors with TTH300 transmitter ..................................................................8

6.3 SensyTemp temperature sensors without transmitter ...................................................................................9

7Periodic checks .................................................................................................................................................10

7.1 SensyTemp TSP temperature sensors with TTH300 transmitter ................................................................10

7.2 SensyTemp temperature sensors without transmitter .................................................................................11

8Repairs................................................................................................................................................................11

9Configuration with TTH300 transmitters.........................................................................................................12

10 Safety engineering parameters........................................................................................................................15

11 Appendix ............................................................................................................................................................17

12 Management Summary FMEDA .......................................................................................................................18

Field of Application

4 SensyTemp TSP SM/TSP/SIL-EN

1 Field of Application

Temperature monitoring of solids, fluids and gases of all types in containers and pipes

according to the special safety engineering requirements of IEC 61508.

The operating limits are defined in the data sheets and operating instructions for the separate

models. In case of questions, please contact your ABB partner.

2 Acronyms and abbreviations

Acronym /

Abbreviation

Designation Description

HFT Hardware Fault

Tolerance

The hardware fault tolerance of the device.

This is the capability of a functional unit to continue the

execution of the demanded function in case of faults or

deviations.

MTBF Mean Time

Between Failures

This is the mean time period between two failures.

MTTR Mean Time To

Repair

This is the mean time period between the occurrence of

a failure in a device or system and its repair.

PFD Probability of

Failure on

Demand

This is the likelihood of dangerous safety function

failures occurring on demand.

PFDAVG Average

Probability of

Failure on

Demand

This is the average likelihood of dangerous safety

function failures occurring on demand.

SIL Safety Integrity

Level

The international standard IEC 61508 specifies four

discrete safety integrity levels (SIL 1 to SIL 4). Each

level corresponds to a specific probability range

regarding the failure of a safety function. The higher the

safety integrity level of the safety-related systems, the

lower likelihood of non-execution of the demanded

safety functions.

SFF Safe Failure

Fraction

The fraction of non-hazardous failures, i.e. the fraction of

failures without the potential to set the safety-related

system to a dangerous or impermissible state.

Low demand

mode

Low demand

mode of

operation

Measuring mode with low demand rate. Measuring

mode, in which the demand rate for the safety-related

system is not more than once a year and is not greater

than double the frequency of the periodic test.

DCS Distributed

Control System

Control systems that are used in industrial engineering

applications to monitor and control distributed

equipment.

Acronyms and abbreviations

SM/TSP/SIL-EN SensyTemp TSP 5

Acronym /

Abbreviation

Designation Description

HMI Human Machine

Interface

Here, the HMI is the combined module consisting of

LCD and local keypad.

DTM Device Type

Manager

The DTM is a software module that provides functions

for accessing device parameters, configuring and

operating the devices and diagnosing problems. By

itself, a DTM is not executable software. It only 'comes

to life' in an so called FDT 'container' program.

LRV Device

Configuration

Lower Range Value of the measurement range

URV Device

Configuration

Upper Range Value of the measurement range

Multidrop Multidrop mode In multidrop mode, up to 15 field devices are connected

in parallel to a single wire pair. The analog current signal

serves just to energize the two-wire devices providing a

fixed current of 4mA.

Relevant standards

6 SensyTemp TSP SM/TSP/SIL-EN

3 Relevant standards

Standard Designation

IEC 61508, Part 1 to 7 Functional safety of electrical/electronic/programmable electronic

safety-related systems

4 Other applicable documents and papers

Observe the following documents in addition to the safety information:

Product name Document name Designation and application

TSP111,

TSP121,

TSP131

DS/TSP1X1 Data Sheet TSP100

TSP311,

TSP321,

TSP331

DS/TSP3X1 Data Sheet TSP300

TSA101 DS/TSA101 Data Sheet TSA101

TSP111, TSP311

TSP121, TSP321

TSP131, TSP331

TSA101

OI/TSP Operating Instructions TSP 100,

TSP300 and TSA101

TSP111, TSP311

TSP121, TSP321

TSP131, TSP331

TSA101

CI/TSP Commissioning Instructions TSP100,

TSP300 and TSA101

TTH300 DS/TTH300 Data Sheet TTH300

TTH300 OI/TTH300 Operating Instructions TTH300

TTH300 CI/TTH300 Commissioning Instructions TTH300

Documents are available in the respective languages: -DE German, -EN English, -FR French,

etc.

These are available on the ABB internet at www.abb.com/temperature.

In addition, the user of this device is responsible for ensuring compliance with the respective

legal regulations and standards.

Terms and definitions

SM/TSP/SIL-EN SensyTemp TSP 7

5 Terms and definitions

Terms Definitions

Dangerous failure A failure that has the potential to place the safety-related system in

a dangerous state or render the system inoperative.

Safety-related system A safety-related system carries out the safety functions that are

required to achieve or maintain a safe state, e.g., for a system.

Example: A pressure meter, a logics unit (e.g., limit transmitter) and

a valve constitute a safety-related system.

Safety-related

functions

A specified function that is carried out by a safety-related system

with the goal, under consideration of a defined dangerous incident,

of achieving or maintaining a safe state for the system. Example:

limit temperature monitoring.

Safety function

8 SensyTemp TSP SM/TSP/SIL-EN

6 Safety function

6.1 Overview

The temperature sensors in the SensyTemp TSP series can be used in applications according

to safety standards with the TTH300 transmitter or without a transmitter. Use the “CS” option

when ordering to select the safety version according to SIL Level 2.

6.2 SensyTemp TSP temperature sensors with TTH300 transmitter

The SensyTemp temperature sensor with built-in TTH300 transmitter generates a linear

temperature signal proportional to the connected temperature sensor (4 … 20 mA). All safety

functions refer strictly to the analog output signal.

The entire valid range for the output signal must be configured between min. 3.8 mA and max.

20.5 mA (factory setting).

Warning!

In safety mode, HART communication occurs only when write protection is activated. The

HART master must comply with the safety requirements of the customer application.

Alarm behavior and current output

When a critical error is detected, the configured alarm current is generated and fed to a

downstream logics unit, e.g., a DCS, which checks for overshoots of a defined maximum value.

There are two selectable modes for the alarm current:

• HIGH ALARM (high alarm, max. alarm current); this is the factory setting

• LOW ALARM (low alarm, min. alarm current)

The low alarm current can be configured in a range from 3.5 to 4.0 mA. The factory setting is

3.6 mA.

The high alarm current can be configured in a range from 20.0 to 23.6 mA. The factory setting is

22 mA.

In the following cases, a detected error is displayed independently of the configured alarm

current within the low alarm range:

• Runtime errors

• Memory error (non-volatile data, RAM, ROM)

After switching on or restarting the transmitter electronic unit, the minimum low alarm time

(LOW-alarm, startup time) is 10 to 15 seconds.

Warning!

To ensure accurate error monitoring, the following conditions must be fulfilled:

• The low alarm must be configured to a value of ≤3.6 mA.

• The high alarm must be configured to a value of ≥21 mA.

• The DCS must identify the configured high and low alarms as malfunctions, and the alarm

must be configured according to the desired setup.

Warning!

To ensure the current output is functioning properly, the terminal on the standard device must

be between 11 V … 42 V DC (Ex version: 11 V … 30 V DC).

Safety function

SM/TSP/SIL-EN SensyTemp TSP 9

The DCS loop must be capable of providing the required voltage level when the current output

is running with the configured high alarm.

The device does not meet safety requirements under the following conditions:

• During configuration

• When write protection is deactivated

• With activated HART multidrop mode

• During a simulation

• During an inspection of the safety function

Warning!

The safety function for the device includes the basic device TSPxxx with built-in TTH300

transmitter. Information in the corresponding documentation must be taken into consideration.

The percentage of failures that do not place the device in a hazardous functional state is

provided by the SFF value.

Total safety accuracy

The value defined for the overall accuracy of the safety function for this device is ± 2% of the

measuring range.

The basic accuracy depends on the sensor model and can be found in the appropriate data

sheets.

Switch-on time and safety operating mode

After switching on the device, all safety-relevant errors are detected after 2 minutes in low

demand mode.

6.3 SensyTemp temperature sensors without transmitter

SensyTemp TSP temperature sensors without transmitter provide an output signal suited to the

sensor (resistance or thermocouple). For failure rates based on the FMEDA report, refer to the

section “Safety Engineering Parameters”. These failure rates must be taken into consideration

when connecting to certified transmitters acc. to safety standards.

Periodic checks

10 SensyTemp TSP SM/TSP/SIL-EN

7 Periodic checks

7.1 SensyTemp TSP temperature sensors with TTH300 transmitter

Safety inspections

The safety function for the entire safety loop must be checked regularly in accordance with IEC

61508. The inspection intervals are defined when calculating the individual safety loops for a

system.

Users are responsible for selecting the type of inspection and the intervals within the specified

period. The PFDAV value depends on the selected inspection interval. For the PFDAV values in

the SIL declaration of conformity, the inspection interval T[Proof] for checking the safety function

is 1 year. For additional inspection intervals with corresponding PFDAV values, refer to the

chapter “Management Summary FMEDA”.

Inspections must be conducted in a manner that enables users to verify proper function of the

safety equipment in combination with all components.

One possible procedure for recurring tests to detect hazardous and unidentified device errors is

described in the following section. Some 99% of the “Du” errors in the transmitter electronic unit

are detected by this test.

Checking the safety function

To check the safety function of the device, proceed as follows:

1. Bridge the safety DCS or take other appropriate measures to ensure the alarm is not

triggered unintentionally.

2. Deactivate write protection (refer to the relevant operating instructions).

3. Set the current output of the transmitter to a high alarm value by using the DTM simulation

command (Diagnosis/Simulation/Current Output).

4. Check whether the current output signal reaches this value.

5. Set the current output of the transmitter to a low alarm value by using the DTM simulation

command.

6. Check whether the current output signal reaches this value.

7. Activate write protection (refer to the relevant operating instructions) and wait at least 20

seconds.

8. Restart by switching off the device.

9. Check the current output with reference temperature; set the LRV value (4 mA) and URV (20

mA) via 2-point calibration.

10.Remove the bridge from the safety DCS or use another method to restore the standard

operating mode.

11.After performing the test, the events must be documented and archived properly.

A suitable sensor simulator (PT100-simulator, Ref. voltage source) can be used to check the

transmitter electronic unit without sensor. Test the sensor according to SIL requirements for

customer applications. ABB temperature sensors are checked according to the quick check

(see next section).

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