IEC 61810-2-1:2017

Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B₁₀ values

IEC 61810-2-1:2017 specifies reliability test procedures for electromechanical elementary relays when enhanced requirements for the verification of reliability apply.
Particular provisions are given for relays incorporated in safety-related control systems of machinery in accordance with IEC 62061 and ISO 13849-1. For such relays, B10 values for dangerous failures (B10D values) are derived from the tests specified in this document.
This edition includes the following significant technical changes with respect to the previous edition:
- limitation of tests to 10 M cycles in Clause 5;
- reduction of required number of test samples to 5 in specified cases;
- introduction of WeiBayes analysis for routine test under Clause 4.

Relais électromécaniques élémentaires - Partie 2-1: Fiabilité - Procédure de vérification des valeurs de B₁₀

L'IEC 61810-2-1:2017 spécifie les procédures d'essai de fiabilité pour les relais électromécaniques élémentaires lorsque des exigences renforcées pour la vérification de la fiabilité s'appliquent.
Des dispositions particulières sont fournies pour les relais incorporés dans les systèmes de commande relatifs à la sécurité des machines selon l'IEC 62061 et l'ISO 13849-1. Pour ces relais, les valeurs de B10 pour des défaillances dangereuses (valeurs de B10D) sont obtenues à partir des essais spécifiés dans le présent document.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- limitation des essais à 10 M de manœuvres à l'Article 5;
- réduction du nombre exigé d'échantillons d'essai à 5 dans des cas spécifiés;
- introduction de l'analyse de WeiBayes pour l'essai individuel de série à l'Article 4.

General Information

• Status: Published
• Publication Date: 29-May-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.120.70 - Relays
• Technical Committee: TC 94 - Electrical relays
• Drafting Committee: WG 3 - TC 94/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 23-Jun-2017
• Completion Date: 30-May-2017

Relations

• Revises: IEC PAS 61810-2-1:2008 - Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of <i>B</i>₁₀ values
• Effective Date: 05-Sep-2023
• Revises: IEC 61810-2-1:2011 - Electromechanical elementary relays - Part 2-1: Reliability - Procedure for the verification of B₁₀ values
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61810-2-1 ®
Edition 2.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –
Part 2-1: Reliability – Procedure for the verification of B values
Relais électromécaniques élémentaires –
Partie 2-1: Fiabilité – Procédure de vérification des valeurs de B
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IEC 61810-2-1 ®
Edition 2.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical elementary relays –

Part 2-1: Reliability – Procedure for the verification of B values
Relais électromécaniques élémentaires –

Partie 2-1: Fiabilité – Procédure de vérification des valeurs de B
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70 ISBN 978-2-8322-4389-3

– 2 – IEC 61810-2-1:2017 © IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.2 Definitions related to tests . 7
4 Verification of B . 7
4.1 General . 7
4.2 Requirements . 7
4.2.1 Test specimens . 7
4.2.2 Test circuit . 8
4.2.3 Contact loads . 8
4.2.4 Environmental conditions . 8
4.2.5 Operating conditions . 8
4.2.6 Failure criteria . 8
4.3 Performance of the tests . 9
4.3.1 Type test . 9
4.3.2 Routine test . 9
5 Evaluation and verification of B . 9
10D
5.1 General . 9
5.2 Requirements . 10
5.2.1 Test specimens . 10
5.2.2 Test circuit . 10
5.2.3 Contact loads . 11
5.2.4 Environmental conditions . 11
5.2.5 Operating conditions . 11
5.2.6 Failure criteria . 11
5.3 Performance of the tests . 12
5.3.1 Type test . 12
5.3.2 Routine test . 12
Annex A (informative) Example illustrating the assessment of malfunctions for B
10D
evaluation . 15
A.1 Purpose . 15
A.2 Basic assumptions . 15
A.3 Example. 15
A.4 Evaluation . 16
Bibliography . 17

Figure 1 – Schematic flowchart . 13
Figure 2 – Schematic flowchart for relays where dangerous failures have to be
assessed . 14

Table A.1 – Example with number of cycles at which malfunctions have been recorded . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL ELEMENTARY RELAYS –

Part 2-1: Reliability – Procedure for the verification of B values
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