GB/T 19671-2022
Safety of machinery—Two-hand control devices—Principles for design and selection (English Version)

Standard No.

GB/T 19671-2022

Language

Chinese, Available in English version

Release Date

2022

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 19671-2022

Replace

GB/T 19671-2005

Scope

This document specifies the safety requirements for two-hand control devices (THCD) and the dependencies between output signals and manually operated control actuators. This document gives the main characteristics of THCD used to achieve a safe state, and also gives the combination of functional characteristics of the three types of THCD. This document does not apply to devices intended to be used as enabling devices, keep-run devices or special control devices. This document does not specify which machines require the use of THCD, nor does it specify what type of THCD is used in a specific application. In addition, although guidance is given, this document does not specify the distance between THCD and the danger zone (see 8.8). This document gives THCD design requirements and selection guidelines based on risk assessment, including prevention of abandonment, failure avoidance and compliance verification. Note 1: THCD only provides protection to its operator. Note 2: For a specific machine, it may be specified in the Class C standard whether it is appropriate to use a two-handed control device as a protective device. If there is no standard or if it is not suitable, the machine manufacturer is responsible for carrying out a risk assessment and determining the applicable protective measures. This document applies to all THCDs that use various energy sources, including: --- THCDs that have been fully assembled and can be installed directly; --- THCDs that need to be assembled by the machine manufacturer or integrator.

GB/T 19671-2022 Referenced Document

• GB/T 15706-2012 Safety of machinery.General principles for design.Risk assessment and risk reduction
• GB/T 16855.1-2018 Safety-related components of machinery safety control systems Part 1: General principles for design
• GB/T 16855.2-2015 Safety of machinery—Safety-related parts of control systems—Part 2: Validation
• GB/T 19876-2012 Safety of machinery.Positioning of safeguards with respect to the approach speeds of parts of the human body
• IEC 62061 

GB/T 19671-2022 history

• 2022 GB/T 19671-2022 Safety of machinery—Two-hand control devices—Principles for design and selection
• 2005 GB/T 19671-2005 Safety of machinery-Two-hand control devices-Functional aspects and design principles