EN 61810-2-1 Electromechanical Basic Relays - Part 2-1: Reliability - Procedure for Verifying B10 Values

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EN 61810-2-1 Electromechanical Basic Relays - Part 2-1: Reliability - Procedure for Verifying B10 Values

EUROLAB laboratory provides testing and compliance services within the scope of EN 61810-2-1 standard. This part of the EN 61810 standard specifies reliability test procedures for electromechanical basic relays when advanced requirements for verification of reliability are applied. According to IEC 62061 and ISO 13849-1, special provisions are made for relays included in the safety-related control systems of machines.

EN 61810-2-1 Electromechanical Basic Relays - Part 2-1: Reliability - Procedure for Verifying B10 Values

The B10 values ​​(B10D values) for dangerous faults for such relays are derived from the tests specified in this document.

Based on the general provisions of EN 61810-2, this part of EN 61810 specifies reliability testing procedures for electromechanical basic relays to which advanced requirements for verification of reliability apply.

A type test is passed and then confirmed by routine testing at regular intervals. This document explains how the figures for B10 (average number of cycles until 10% of relays fail) are derived from these life tests with representative relay samples.

Particularly when electromechanical basic relays are intended to be included in the safety-related control systems of machines in accordance with IEC 62061 and ISO 13849-1, the mean dangerous fault time (MTTFd) is a measure that can be taken into account when making the assessment.

Although a component failure cannot be defined as "dangerous" unless the detailed implementation is known, it is common to consider and refer to a failure mode as a failure mode that is likely to result in a hazard in a typical application of the component. "dangerous failure". MTTFd then becomes the expectation of average downtime in this "dangerous" mode.

Electromechanical basic relays with force-guided (mechanically connected) contacts offer a high diagnostic coverage according to ISO 13849-1.

EUROLAB, with its more than 25 years of experience, state-of-the-art accredited laboratories and expert team, helps you get precise and fast results. Do not hesitate to contact our laboratory for your testing and certification requests.

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