Pepperl+Fuchs SJ2-SN Manual de usuario

ISO9001

Functional Safety

Inductive Slot Sensor

SJ2-SN, SJ3,5-S(1)N

Manual

With regard to the supply of products, the current issue of the following document is applicable:

The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central

Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its most

recent version as well as the supplementary clause: "Expanded reservation of proprietorship"

Worldwide

Pepperl+Fuchs Group

Lilienthalstr. 200

68307 Mannheim

Germany

Phone: +49 621 776 - 0

E-mail: info@de.pepperl-fuchs.com

North American Headquarters

Pepperl+Fuchs Inc.

1600 Enterprise Parkway

Twinsburg, Ohio 44087

USA

Phone: +1 330 425-3555

E-mail: [email protected].com

Asia Headquarters

Pepperl+Fuchs Pte. Ltd.

P+F Building

18 Ayer Rajah Crescent

Singapore 139942

Phone: +65 6779-9091

E-mail: [email protected]

https://www.pepperl-fuchs.com

Functional Safety SJ2-SN, SJ3,5-S(1)N

Contents

2019-12

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Content of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Standards and Directives for Functional Safety . . . . . . . . . . . . . . . . . . . 9

3 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 System Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.3 Safety Function and Safe State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4 Characteristic Safety Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.5 Useful Lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4 Mounting and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Proof Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6 Maintenance and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7 List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Functional Safety SJ2-SN, SJ3,5-S(1)N

Contents

2019-12

Functional Safety SJ2-SN, SJ3,5-S(1)N

Introduction

2019-12

1 Introduction

1.1 Content of this Document

This document contains information for usage of the device in functional safety-related

applications. You need this information to use your product throughout the applicable stages

of the product life cycle. These can include the following:

•Product identification

•Delivery, transport, and storage

•Mounting and installation

•Commissioning and operation

•Maintenance and repair

•Troubleshooting

•Dismounting

•Disposal

The documentation consists of the following parts:

•Present document

•Instruction manual

•Datasheet

Additionally, the following parts may belong to the documentation, if applicable:

•EU-type examination certificate

•EU declaration of conformity

•Attestation of conformity

•Certificates

•Control drawings

•FMEDA report

•Assessment report

•Additional documents

For more information about Pepperl+Fuchs products with functional safety,

see www.pepperl-fuchs.com/sil.

Note

This document does not substitute the instruction manual.

Note

For full information on the product, refer to the instruction manual and further documentation

on the Internet at www.pepperl-fuchs.com.

2019-12

Functional Safety SJ2-SN, SJ3,5-S(1)N

Introduction

1.2 Safety Information

Target Group, Personnel

Responsibility for planning, assembly, commissioning, operation, maintenance,

and dismounting lies with the plant operator.

Only appropriately trained and qualified personnel may carry out mounting, installation,

commissioning, operation, maintenance, and dismounting of the product. The personnel

must have read and understood the instruction manual and the further documentation.

Intended Use

The device is only approved for appropriate and intended use. Ignoring these instructions

will void any warranty and absolve the manufacturer from any liability.

The device is developed, manufactured and tested according to the relevant safety standards.

Use the device only

•for the application described

•with specified environmental conditions

•with devices that are suitable for this safety application

Improper Use

Protection of the personnel and the plant is not ensured if the device is not used according

to its intended use.

Functional Safety SJ2-SN, SJ3,5-S(1)N

Introduction

2019-12

1.3 Symbols Used

This document contains symbols for the identification of warning messages and of informative

messages.

Warning Messages

You will find warning messages, whenever dangers may arise from your actions.

It is mandatory that you observe these warning messages for your personal safety

and in order to avoid property damage.

Depending on the risk level, the warning messages are displayed in descending order

as follows:

Informative Symbols

Action

This symbol indicates a paragraph with instructions. You are prompted to perform an action

or a sequence of actions.

Danger!

This symbol indicates an imminent danger.

Non-observance will result in personal injury or death.

Warning!

This symbol indicates a possible fault or danger.

Non-observance may cause personal injury or serious property damage.

Caution!

This symbol indicates a possible fault.

Non-observance could interrupt the device and any connected systems and plants,

or result in their complete failure.

Note

This symbol brings important information to your attention.

2019-12

Functional Safety SJ2-SN, SJ3,5-S(1)N

Product Description

2 Product Description

2.1 Function

General

The device is an inductive slot sensor. Inductive slot sensors consist of a two coil system

sensing across the slot opening.

The device is a NAMUR safety sensor in 2-wire technology. The device transmits the analog

signal according to NAMUR to a connected control unit. A control unit can,

e. g., be a switch amplifier or an I/O card in a PLC.

In safety applications up to SIL 2, the device must be operated on a control unit according

to EN 60947-5-6 (NAMUR). Observe the limitations, see chapter 3.2.

In safety applications up to SIL 3, the device must be operated on a control unit

for SIL 3 safety applications. Pepperl+Fuchs offers control units for SIL 3 safety applications,

i. e. switch amplifier KFD2-SH-Ex1. Observe the limitations, see chapter 3.2.

SJ2-SN

The sensor has NC function (normally-closed). The device is in high impedance state

when the measuring plate is inside of the slot.

The sensor is qualified for safety functions in a temperature range from -40 °C to +100 °C.

The sensor has a slot width of 2 mm.

SJ3,5-SN

The sensor has NC function (normally-closed). The device is in high impedance state

when the measuring plate is inside of the slot.

The sensor is qualified for safety functions in a temperature range from -40 °C to +100 °C.

The sensor has a slot width of 3.5 mm.

SJ3,5-S1N

The sensor has NO function (normally-open). The device is in high impedance state

when the measuring plate is outside of the slot.

The sensor is qualified for safety functions in a temperature range from -25 °C to +100 °C.

The sensor has a slot width of 3.5 mm.

Note

See corresponding datasheets for further information.

Functional Safety SJ2-SN, SJ3,5-S(1)N

Product Description

2019-12

2.2 Interfaces

The device has the following interfaces.

•Safety relevant interface: device output

•Non-safety relevant interface: none

2.3 Marking

2.4 Standards and Directives for Functional Safety

Device-specific standards and directives

Note

For corresponding connections see datasheet.

Pepperl+Fuchs Group

Lilienthalstraße 200, 68307 Mannheim, Germany

Internet: www.pepperl-fuchs.com

SJ2-SN

SJ2-SN-Y89620

SJ2-SN-Y272219

SJ3,5-SN

SJ3,5-SN-Y89604

SJ3,5-SN-Y303204

SJ3,5-S1N

SJ3,5-S1N-Y303205

273025

282583

272219

273026

282586

303204

273027

303205

Allowed for SIL 2 applications

SJ2-SN

SJ2-SN-Y89620

SJ2-SN-Y272219

SJ3,5-SN

SJ3,5-SN-Y89604

SJ3,5-S1N

273025

282583

272219

273026

282586

273027

Allowed for SIL 3 applications

Functional safety IEC/EN 61508, part 2, edition 2000:

Functional safety of electrical/electronic/programmable

electronic safety-related systems (manufacturer)

2019-12

Functional Safety SJ2-SN, SJ3,5-S(1)N

Planning

3 Planning

3.1 System Structure

3.1.1 Low Demand Mode of Operation

If there are two control loops, one for the standard operation and another one for the functional

safety, then usually the demand rate for the safety loop is assumed to be less

than once per year.

The relevant safety parameters to be verified are:

•the PFDavg value (average Probability of dangerous Failure on Demand)

and the T1value (proof test interval that has a direct impact on the PFDavg value)

•the SFF value (Safe Failure Fraction)

•the HFT architecture (Hardware Fault Tolerance)

3.1.2 High Demand or Continuous Mode of Operation

If there is only one safety loop, which combines the standard operation and safety-related

operation, then usually the demand rate for this safety loop is assumed to be higher

than once per year.

The relevant safety parameters to be verified are:

•the PFH value (Probability of dangerous Failure per Hour)

•Fault reaction time of the safety system

•the SFF value (Safe Failure Fraction)

•the HFT architecture (Hardware Fault Tolerance)

3.1.3 Safe Failure Fraction

The safe failure fraction describes the ratio of all safe failures and dangerous detected failures

to the total failure rate.

SFF = (s + dd) / (s + dd + du)

A safe failure fraction as defined in IEC/EN 61508 is only relevant for elements or (sub)systems

in a complete safety loop. The device under consideration is always part of a safety loop

but is not regarded as a complete element or subsystem.

For calculating the SIL of a safety loop it is necessary to evaluate the safe failure fraction

of elements, subsystems and the complete system, but not of a single device.

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