IEC TS 62998-1:2019

IEC TS 62998-1 ®
Edition 1.0 2019-05
TECHNICAL
SPECIFICATION
colour
inside
Safety of machinery –
Safety-related sensors used for the protection of persons
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IEC TS 62998-1 ®
Edition 1.0 2019-05
TECHNICAL
SPECIFICATION
colour
inside
Safety of machinery –
Safety-related sensors used for the protection of persons

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.110; 21.020 ISBN 978-2-8322-6819-3

– 2 – IEC TS 62998-1:2019 © IEC 2019
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 10
3 Terms and definitions . 10
3.1 Characteristics and performance criteria . 11
3.2 Dependability . 12
3.3 Procedures and architectural deliberations . 14
3.4 Terms related to system . 16
3.5 Fusion. 18
3.6 Safety related information . 18
3.7 Test . 20
3.8 User groups . 22
3.9 Verification and validation . 22
4 Lifecycle and interconnection to safety-related electrical control systems (SCS) . 24
4.1 General . 24
4.2 Hazard and risk analysis . 26
4.2.1 General . 26
4.2.2 Hazard caused by SRS/SRSS. 27
4.2.3 Required SRS/SRSS performance class . 28
4.3 Correspondence SRS/SRSS performance class . 28
5 Design and development phase . 29
5.1 General . 29
5.2 SRS/SRSS functions . 29
5.3 Design analysis. 30
5.4 Simulation . 30
5.5 Sensing zone(s) . 31
5.6 Safety related zone . 31
5.7 Automation related zone . 31
5.8 Detection capability and dependability . 31
5.8.1 General . 31
5.8.2 Object classes and physical properties . 32
5.8.3 Environmental influences . 33
5.9 User interface . 37
5.9.1 General . 37
5.9.2 Mounting . 37
5.9.3 Safety related information . 37
6 Integration and installation phase . 40
6.1 General . 40
6.2 Fusion of SRS into an SRSS . 40
6.2.1 General . 40
6.2.2 Limits of use after fusion . 41
6.2.3 Detection capability after fusion . 41
6.2.4 Sensing zone(s) after fusion . 42
6.2.5 Dependability under environmental condition after fusion . 42
6.2.6 Safety related information after fusion . 42

6.2.7 SRSS performance class after fusion . 43
6.2.8 Response time after fusion . 44
6.2.9 Verification and validation after fusion . 44
6.3 Calibration at user side . 44
6.3.1 General . 44
6.3.2 Calibration procedure and equipment . 45
6.3.3 Verification and validation of calibration . 45
7 Operation, maintenance and modification phases . 45
8 Verification and validation . 46
8.1 General . 46
8.2 Verification of an SRS/SRSS . 46
8.3 Validation of an SRS/SRSS . 47
8.4 Analysis . 48
8.5 Test . 49
8.5.1 General . 49
8.5.2 Test classification . 49
8.5.3 Test method and test setup . 50
8.5.4 Test piece . 51
8.5.5 Test plan and test results . 51
9 Information for use . 52
Annex A (informative)  Examination of systematic capabilities . 54
Annex B (informative) User groups . 55
B.1 User groups of SRS/SRSS and groups addressed by this document . 55
B.2 User groups addressed by fusion . 55
Annex C (informative)  Functional decomposition and/or integration . 58
Annex D (normative) Generation and application of simulation models . 59
D.1 General . 59
D.2 Recommendations for use. 59
D.3 Simulation objectives and measures to achieve them . 59
D.4 Verification. 62
Annex E (informative) Child properties and behaviour . 64
E.1 General . 64
E.2 Sizes of parts of body . 64
Annex F (informative) Environmental influences . 68
F.1 General . 68
F.2 Example 1 for application of environmental influences . 68
F.3 Example 2 for application of environmental influences . 70
Annex G (informative) Faults, failures and influences resulting in a loss of SRS/SRSS
safety related function. 71
G.1 General . 71
G.2 Failure to danger . 74
G.3 Normal operation . 75
G.4 Signal to initiate the fault reaction function and confidence information as
part of safety related information . 75
Annex H (informative) Test aspects . 77
H.1 General . 77
H.2 Mechanical influence test . 77
Annex I (informative)  Examples of functions, safety related information and fusion . 81

– 4 – IEC TS 62998-1:2019 © IEC 2019
I.1 Example of functions . 81
I.2 Example of safety related information .
...