GB/T 37157-2018 Active National standards

GB/T 37157-2018 Safety of machinery—Evaluation of fault masking serial connection of interlocking devices with potential free contacts

Publish Date: 2018-12-28 Implement Date: 2019-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 37157-2018

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Health, safety, and labor protection

ICS Name: Mechanical safety

Publish Date: 2018-12-28

Implement Date: 2019-07-01

Pages: 20 pages

Scope

This standard presents and explains the principle of fault masking in multiple series-connected non-potential contact interlocking devices (B1 to Bn) connected to a logic unit (K) that performs diagnostics (see Figures 1 to 7). The standard also provides guidance on how to estimate the probability of fault masking and the maximum DC value of the interlocking devices involved. This standard only applies to interlocking devices that are physically connected in series on both channels. The standard has the following two purposes: -- to provide users with guidance on estimating the maximum DC value; -- to serve as a design guide for SRP/CS systems.