safety with or without standard plc · safety with or without standard plc ? intern © siemens ag...

Safety with or without standard PLC ?

siemens.com/simatic-safetyIntern © Siemens AG 2016

Intern © Siemens AG 2016DF FA S MP PLC 2

Agenda

Some examples with standard components

1

The result of a risk analysis2

3

What the standards says

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Risk assessment

Risk reduction

ProofProve compliance with the

directiveAffix the CE marking

Carry out a validationDocument the measures

Implement a safety concept and put it into operation

Design the architecture of the safety functions

Define and evaluate

the safety measures (3-level method)

Evaluate the risksIdentify the hazardsDescribe the machine

Risk assessment / risk reduction according to ISO 12100

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Define and evaluate the safety measures The 3-level method according to EN ISO 12100 Ch. 6

Risk reduction

YES

NO

YES

YES

NO

NO

ENDRenewed risk assessment

START

User information about residual risks

Risk reduced appropriately?

Risk reduced appropriately?

Risk reduced appropriately?

Safe mechanical design

Technical measures

1

2

3

No PLC needed

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Relation of PL and Cat

PL a

PL b

PL c

PL d

PL e

DCavg=Cat. B

0Cat. 1

0Cat. 2

low mediumCat. 3

low mediumCat. 4high

lowmedium

high

MTTFd

CCF >= 65 pts

WELL tried components !!

Standard components

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Possible architectures according to ISO 13849-1Categories from B to 2

Standard components

WELL tried components !!

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Requirements starting from category 1

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What are well tried components ?

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Safety Evaluation ToolSafety loop with standard components PLb

Detection Evaluation Reaction

Standard CPU Switchgear

Well provenE-STOPWell proven

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SRP-CS E-STOP

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SRP-CS Contactor

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SRP-CS: standard PLC??

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??

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With Sistema PL can be calculated

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STD CPUSTD DI STD DO

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Result : a low PL is reached

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Detection Evaluation Reaction

Standard CPU Switchgear

Well provenE-STOPWell proven

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Differentiation of the use of IEC 62061 – ISO 13849

IEC 62061 • applicable for all electrical and electronical systems with any architecture.

• SIL 1 up to 3• programmable logic controller (PLC etc) have to fulfil IEC 61508

EN ISO 13849-1 • applicable for hydraulic, pneumatic and electromechanical systems without

restrictions. • applicable for programmable electronic only with restrictions

• certain architecture• up to PL d resp. SIL 2

• programmable logic controller for PL e (SPS etc) have to fulfil IEC 61508

• calculation concept of ISO 13849-1 based on predefined architectures

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Safety Evaluation ToolWith certified components

Detection Evaluation Reaction

CPU 1500FWith F-DI and F-DO

2x 3RT switchgears3SE6315 RFID safety switches

Ple PFH 2,7e-10

Ple PFH 1e-9

Ple PFH 2e-9

Ple PFH 2e-9

Ple PFH 2e-8

TOTAL = Ple PFH 2,52e-8

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Safety switch off of voltage on standard components

1. The safety system is Ple 2. The feedback of the contactors is taken in

consideration 3. The MTTFd of each module and each contactor

has to be taken in consideration.

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SIMATIC Safety Integrated… System Solutions for Safety-Related Automation

Consulting

Support and Consulting by Siemens safety expertshttp///support.industry.siemens.com

+

Functionexamples

Prefabricated solutions on the basis of practice-oriented functional examples siemens.com/safety-functional-examples

+

Safety Evaluation Tool SET

SET for the assessment of your machine's safety functions siemens.com/safety-evaluation-tool

+

Functional Safety services & training

Training and support regarding standards, risk assessment siemens.be/sitrain

+

Consistent productportfolio

Integrated product portfolioDetection – evaluation – respondingsiemens.com/safety-integrated-products

+

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Thank you very much for your attention

François-Xavier HenneauPromotor SafetyDF FA

Demeurslaan, 132

1654 Huizingen

Francois-xavier.henneau@siemens.com

Tel 0476 / 46 83 56

siemens.com/simatic-safety

DF FA S MP PLC 2