Valid

GB/Z 44938.1-2024Electrical safety of machinery - Part 1: Safety-related sensors used for the protection of persons (English PDF)

机械电气安全第1部分：用于保护人员安全的传感器

Preview PDF

This is a limited preview

Buy now to download the full PDF (66 pages)

Need quotation for your management?

Get a formal quotation for GB/Z 44938.1-2024 in 30 minutes.

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2024

Implementation date

December 31, 2024

Scope

GB/Z 44938.1-2024 is the English-translated version of 机械电气安全第1部分：用于保护人员安全的传感器.

GB/Z 44938.1-2024 is the Chinese standard "Electrical safety of machinery - Part 1: Safety-related sensors used for the protection of persons". Its scope clause reads: This document specifies safety-related sensors (SRS) and safety-related sensors used to protect personnel safety with regard to system performance.

System (SRSS) requirements in development and integration.

This document applies only under the following conditions. --Use sensors to protect personnel; and -- Functional safety standards for electrical control systems that consider sensors as subsystems or subsystem elements; and --Product-specific sensor standards (such as IEC 61496 (all parts) and IEC 60947-5-2) do not contain essential provisions or specific The sensor standard for certain products has not yet been released.

Examples of systematic capability verification using various safety-related sensor standards are given in Appendix A. All requirements and research methods in this document are limited to achieving personal protection through the following means. --Detection of potentially dangerous objects; --Detecting the entry of human bodies, human body parts and human-related objects into dangerous areas; or --Identify the differences between these parts and other objects.

Note 1.The use of SRS/SRSS in public places requires not only the detection of the person, but also the detection of the equipment associated with the person, such as wheelchairs, crutches and infusions.

Rack, etc. The performance levels of sensors and sensor systems refer to existing functional safety standards (such as IEC 62061, IEC 61508 (all parts) and definitions in ISO 13849 (all parts).

NOTE 2.For simplicity and to avoid misuse, this document does not provide type definitions or linkages as in IEC 61496-1. Safety Integrity Level (SIL) or SIL requirement limit (subsystem) (SILcl) to simplify the use process for the end user.

Special attention should be paid to the test function and the reliability of the test capability. Environmental impact and indoor and outdoor application tests are defined and will affect the Credibility of detection functions and detection capabilities.

Note 3.Environmental impacts and their classification and test procedures mainly refer to the requirements of general environmental standards. Only in the absence of relevant standards, more specific requirements will be provided.

Requirements and tests for the body. This document is also applicable to personnel protection applications in other industries, such as agriculture or in public places such as subway stations.

Unlike IEC 61508-2, this document does not consider or address actual application requirements (such as processes or components, etc.).

Found what you need?

Document preview — GB/Z 44938.1-2024

National Standard of the People's Republic of China

ICS: 29.020
Classification: K 09

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope1
2 Normative references1
5 Design and development phase17
Appendix B (Informative) User Category38
Appendix F (Informative) Environmental Impact50
F.2 Environmental Impact Application Example 150
F.3 Environmental Impact Application Example 251
Figure 1 Measurement accuracy and measurement uncertainty4
Figure 2 SRS structure example 113
Figure 3 SRS structure example 214
Figure 4 SRSS structure example14
Figure 6 SRS/SRSS safety related information24
Figure I.6 Verification and confirmation method based on SRS instructions and SRSS safety requirements specification64
Table 1 Correspondence between the required minimum SRS/SRSS performance level and safety performance level16
Table 5 Minimum inclusion probability/decision probability required under high requirement rate conditions25
Table 6 The maximum performance level of SRSS applicable after the fusion of two SRSs28
Table 7 Methods used to evaluate verification measures and verification results31
Table 8 Overview of instructions for use that need to be provided36
Table F.1 Environmental impacts and levels according to IEC 60721-3-5 Example 150
Table F.2 Example of environmental impacts and levels in accordance with IEC 60721-3-3 252

1 Scope

This document specifies safety-related sensors (SRS) and safety-related sensors used to protect personnel safety with regard to system performance.

System (SRSS) requirements in development and integration.

This document applies only under the following conditions.

--Use sensors to protect personnel; and

-- Functional safety standards for electrical control systems that consider sensors as subsystems or subsystem elements; and

--Product-specific sensor standards (such as IEC 61496 (all parts) and IEC 60947-5-2) do not contain essential provisions or specific

The sensor standard for certain products has not yet been released.

Examples of systematic capability verification using various safety-related sensor standards are given in Appendix A.

All requirements and research methods in this document are limited to achieving personal protection through the following means.

--Detection of potentially dangerous objects;

--Detecting the entry of human bodies, human body parts and human-related objects into dangerous areas; or

--Identify the differences between these parts and other objects.

Rack, etc.

The performance levels of sensors and sensor systems refer to existing functional safety standards (such as IEC 62061, IEC 61508 (all parts) and definitions in ISO 13849 (all parts).

NOTE 2.For simplicity and to avoid misuse, this document does not provide type definitions or linkages as in IEC 61496-1.

Safety Integrity Level (SIL) or SIL requirement limit (subsystem) (SILcl) to simplify the use process for the end user.

Special attention should be paid to the test function and the reliability of the test capability. Environmental impact and indoor and outdoor application tests are defined and will affect the

Credibility of detection functions and detection capabilities.

Requirements and tests for the body.

This document is also applicable to personnel protection applications in other industries, such as agriculture or in public places such as subway stations.

Unlike IEC 61508-2, this document does not consider or address actual application requirements (such as processes or components, etc.).

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB 28526-2012 Electrical safety of machinery Functional safety of safety-related electrical, electronic and programmable electronic control systems (IEC 62061.2005, IDT)

ISO 7250 (all parts) Basic human body measurements for techno- logical design

ISO 13849 (all parts) Safety of machinery-Safety-related parts of control systems […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 66 pages — is available in the English PDF.

Referenced standards

Normative references

GB 28526-2012Electrical safety of machinery - Functional safety of safety-related electrical, electronic and programmable electronic control systems

ISO 7250 · ISO 13849

Cited by

GB/Z 44938.2-2024Electrical safety of machinery - Part 2: Examples of application for safety-related sensors used to protect persons

Similar standards

GB/T 13869-2026|GB/T 24114.2-2026|GB/T 33589-2026|GB/T 33592-2026|GB/T 33593-2026|GB/T 33603-2026

How to Download GB/Z 44938.1-2024

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.