Turck IM(X)18-DI03-4S-4T1R Guide de l'utilisateur

Your Global Automation Partner

Safety Manual

IM(X)18-DI03-4S-4T1R

Isolating Switching

Amplifier

2 Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com

Contents

V01.00 | 2021/10

1 About this Document 5

2 Scope 5

3 Safety Integrity Level 6

4 Product Description 6

4.1 Safety Function 6

4.2 Safe State 6

4.3 PFH: Probability of dangerous failure per hour (High Demand mode) 7

4.4 PFD: Average probability of dangerous failure on demand (Low Demand mode) 7

5 Safety-Planning 8

5.1 Architectural specicatons 8

5.2 Assumptions 8

5.2.1 FMEDA results 9

5.3 Examples of using this results 10

5.3.1 Probability of dangerous failure per hour (High Demand Mode) 10

5.3.2 Average probability of dangerous failure on demand (Low Demand Mode) 10

6 Operating Instructions 10

6.1 General 10

6.2 Before operation 12

6.2.1 Parameterization 14

6.3 Operation 15

6.4 After operation 15

7 Connection and Wiring Diagrams 16

7.1 Output transistor 16

7.1.1 Wiring diagrams 16

8 Terms and Abbreviations 17

9 Proof Tests 17

10 Certicate 18

11 Document history 18

Contents

4 Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com

V01.00 | 2021/10

1 About this Document

This safety manual contains all information that is required to operate the device in functional

safety systems. Read this manual carefully before using the device.

This document addresses only functional safety according to IEC 61508. Other aspects, such as

intrinsic safety, are not considered.

All instructions must be followed in order to assure functional safety.

Always make sure that this is the latest version of the safety manual at www.turck.com. The

English version is considered the definitive document. Care was taken in the production of the

translations of this document. If there is any uncertainty in its interpretation. Always refer to the

English version of the safety manual or contact Turck directly.

2 Scope

This safety manual is valid for the following devices.

ID Productname Number of

Channels

Clamps Power-Bridge Intrinsic Safety

100030007 IMX18-DI03-4S-4T1R-S/24VDC 4 screw no yes

100030009 IMX18-DI03-4S-4T1R-SPR/24VDC 4 screw yes yes

100030008 IMX18-DI03-4S-4T1R-S/24VDC/CC 4 spring type

terminal

no yes

100030010 IMX18-DI03-4S-4T1R-SPR/24VDC/CC 4 spring type

terminal

yes yes

100030003 IM18-DI03-4S-4T1R-S/24VDC 4 screw no no

100030005 IM18-DI03-4S-4T1R-SPR/24VDC 4 screw yes no

100030004 IM18-DI03-4S-4T1R-S/24VDC/CC 4 spring type

terminal

no no

100030006 IM18-DI03-4S-4T1R-SPR/24VDC/CC 4 spring type

terminal

yes no

The following chapters cover the devices

■IMX18-DI03-4S-4T1R-S

■IM18-DI03-4S-4T1R-S

6 Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com

Safety Integrity Level

3 Safety Integrity Level

The devices are rated to a SIL of:

SIL 2

4 Product Description

The isolating switching amplifiers are used for the galvanically isolated transmission of binary

signals from sensors and mechanical contacts. Sensors acc. to EN 60947-5-6 (NAMUR) or me-

chanical contacts can be connected.

The output circuits are isolated from the input circuits and are designed as potential free

transistor.

The input is specified according to EN 60947-5-6.

The device detects a short circuit when an input current of 6.2 mA is exceeded. The short-circuit

condition will end when the input current falls below 5.9 mA.

A rotary switch assignes the inputs to the outputs

SIL2 – 1oo1 [Ex] [Ax]

Depending on the input signal and according to the configuration (line monitoring, effective

direction), the output assumes the safe state within 20 ms. This leads to the opening of the

normally open contact.

4.1 Safety Function

According to the input signal and the configuration (linemonitoring, effective direction, map-

ping of inputs and outputs) the transistor output is within 20 ms locked.

See „6.2.1 Parameterization“ on page 14 for input signals and configuration.

More than one channel must not be used for the same safety function, e.g. to increase the hard-

ware failure tolerance to achieve a higher SIL, as they contain common components

The Power-Bridge is not part of the safety-function.

The LED is not part of the safety-function.

The common alarm output is not part of the safety-function.

4.2 Safe State

The safe state is always the“low” state.

The“low” state depends on the output type:

Output type Requirement state “Low”

Transistor Transistor is locked

V01.00 | 2021/10

4.3 PFH: Probability of dangerous failure per hour (High Demand mode)

A SIL2 is specified.

In the following table 3 from 7.6.2.9 EN 61508-1:2010 is a PFH of less than 10-6 h-1 required.

A failure limit of 1 FIT corresponds to a PFH of 10-9 h-1.

Table 3 from 7.6.2.9 EN 61508-1

Safety Integrity

Level (SIL)

Probablity of dangerous Failure per Hour from the safety function [h-1] (PFH)

4 ≥ 10-9 … < 10-8

3 ≥ 10-8 … < 10-7

2 ≥ 10-7 … < 10-6

1 ≥ 10-6 … < 10-5

In the safety chain, the device is granted a share of 10% of the respective failure limit value.

10%

100%

IM ActuatorSensor

This means that the failure limit value must be less than or equal 100 FIT. (PFH <= 10-7 h-1)

4.4 PFD: Average probability of dangerous failure on demand (Low Demand mode)

A SIL2 is specified.

In the following table 2 from 7.6.2.9 EN 61508-1:2010 is a PFDavg of less than 10-2 h-1 required.

Table 2 from 7.6.2.9 EN 61508-1

Safety Integrity

Level (SIL)

Average probability of a dangerous failure when the safety function is requested

(PFDavg)

4 ≥ 10-5 … < 10-4

3 ≥ 10-4 … < 10-3

2 ≥ 10-3 … < 10-2

1 ≥ 10-2 … < 10-1

In the safety chain, the device is granted a share of 10 % of the respective failure limit value.

8 Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com

Safety-Planning

10%

100%

IM ActuatorSensor

This means that the failure limit value must be less than 10-3 .

The basis of the consideration is a test interval of 8760 h and an MTTR or MRT of 24 h.

5 Safety-Planning

Planning a safety-related loop

This chapter provides information for planning a safety-related loop.

The device is not specified for a certain application. Make sure that the data provided in this

chapter is valid for your target application.

Special application-specific factors may cause the premature wear of the device and must be

taken into consideration when planning systems; take special measures to compensate for a

lack of experience based values, e.g. through implementation of shorter test intervals.

The suitability for specific applications must be assessed by considering the particular overall

safety-related system with regard to the requirements of IEC 61508.

Safety-planning must only be carried out by trained and qualified personnel.

If there is any doubt contact Turck directly.

5.1 Architectural specicatons

Due to architectural considerations the following characteristics are specified:

Type A

HFT 0

Useful lifetime:

Experience has shown that the useful lifetime often lies within a range of 8 to 12 years. It can

be significantly less if elements are operated near their specification limits. However, it can

be extended by appropriate measures. For example, heavy temperature fluctuations could

potentially decrease the useful lifetime, as constant temperature below 40 °C could potentially

increase the useful lifetime.

5.2 Assumptions

■Failure rates are constant for 10 years, wear out mechanisms are not included

■Propagation of failures are not relevant

■External power supply failure rates are not included

■All components that are not part of the safety function and cannot influence the safety

function (feedback immune) are excluded.

■The activations of line-monitoring can improve the results

V01.00 | 2021/10

5.2.1 FMEDA results

A SIL2 is specified.

According to table 2 and table 3 from 7.4.4.2.2 EN 61508-1:2010, depending on the operating

mode (Typ A or Typ B) and taking into account the hardware fault tolerance of HFT=0, the fol-

lowing SFF values are applied:

■For type A devices, the SFF must be greater than 60 %.

■For type B devices, the SFF must be greater than 90 %.

Table 2 from 7.4.4.2.2 EN 61508-2 (Typ A)

Part of safe failures of an element HFT=0 HFT=1 HFT=2

< 60 % SIL 1 SIL 2 SIL 3

60 % … < 90 % SIL 2 SIL 3 SIL 4

90 % … < 99 % SIL 3 SIL 4 SIL 4

≥ 99 % SIL 3 SIL 4 SIL 4

Table 3 from 7.4.4.2.2 EN 61508-2 (Typ B)

Part of safe failures of an element HFT=0 HFT=1 HFT=2

< 60 % not allowed SIL 1 SIL 2

60 % … < 90 % SIL 1 SIL 2 SIL 3

90 % … < 99 % SIL 2 SIL 3 SIL 4

≥ 99 % SIL 3 SIL 4 SIL 4

The following safety characteristic are the results of the FMEDA.

According to the configuration (inversion-mode, line-monitoring) the results of the FMEDA

vary. In this case the worst-case configuration is regarded

λSD λSU λDD λDU No

eect

SFF DC

IMX18-DI03-4S-4T1R 0 247.99 6.90 79.20 256.31 76.29 8.01

IM18-DI03-4S-4T1R 0 247.99 6.90 79.20 256.31 76.29 8.01

The stated Safe Failure Fraction (SFF) is for reference only. The complete subsystem will need to

be evaluated to determine the overall SFF.

The failure rates used in this analysis are the basic failure rates from the Siemens standard

SN29500 based on the average ambient temperature of components of 40 °C.

„No effect” is a failure mode of a component that plays part in implementing the safety func-

tion but is neither a safe nor a dangerous failure. According to IEC 62061, it would be possible

to classify the„No effect”failures as„Safe Undetected” failures. Not doing so represents the

worst-case

10 Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | [email protected] | www.turck.com

Operating Instructions

5.3 Examples of using this results

5.3.1 Probability of dangerous failure per hour (High Demand Mode)

The PFH values are based on a worst-case diagnostic test rate and a reaction time of 20 ms. The

ratio of the diagnostic test rate to the demand rate shall equal or exceed 100.

PFH

IMX18-DI03-4S-4T1R 7.92E-08 1/h

IM18-DI03-4S-4T1R 7.92E-08 1/h

5.3.2 Average probability of dangerous failure on demand (Low Demand Mode)

With the FMEDA results and the values specified in the following table the average frequency of

dangerous failure can be calculated exemplarily:

T1 8760 h

MTTR 24 h

MTR 24 h

PFDavg

IMX18-DI03-4S-4T1R 3.49E-04

IM18-DI03-4S-4T1R 3.49E-04

6 Operating Instructions

6.1 General

➤ The device must be registered online: http://www.turck.com/SIL or with the supplied SIL

registration card. This must be filled in with all required information upon receipt and sent to

Turck.

➤ The device must only be carried out, fitted, installed, operated, commissioned and main-

tained by trained and qualified personnel.

➤ The device is not specified for a certain application. Make sure that application-specific as-

pects are considered.

➤ Data from other documents, e.g. data sheets, is not valid for functional safety operation. De-

vices must be used in cabinets in an typical industrial field environment only. The following

restrictions describe the operation and storage conditions:

➤ Ensure that the environment complies with the following ratings

Minimum ambient temperature -25 °C

Maximum ambient temperature 70 °C

Minimum storage temperature -40 °C

Maximum storage temperature 80 °C

Maximum air humidity 95 %

Minimum air pressure 80 kPa

Maximum air pressure 110 kPa

➤ The average temperature over a long period of time directly on the exterior sidewall of the

housing must be maximum 40 °C.

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