EN ISO 19014-2:2022 PDF

Overview

EN ISO 19014-2:2022 - Earth-moving machinery: Functional safety (Part 2) specifies principles for the design and evaluation of hardware and architecture requirements for safety‑related parts of the control system (SCS) used in earth‑moving machinery. It defines how to determine the machine performance level achieved (MPLa) for SCS components powered by any energy source (electronic, electrical, hydraulic, mechanical) and applies to machine control systems that control motion or mitigate hazards. The standard is published by CEN as the European adoption of ISO 19014-2:2022.

Key Topics

• Scope and exclusions: Applies to safety‑related control system hardware for earth‑moving machinery per ISO 6165. Excludes awareness systems that do not affect motion (e.g., cameras, radar), most fire suppression (unless it affects SCS), operator‑obvious failures (wipers, headlights) and audible warnings from diagnostic coverage requirements.
• System and hardware design: Principles for architectural choices and hardware design to meet target safety performance.
• Safety performance evaluation: Methods to evaluate MPLa, including consideration of faults, mean time to dangerous failure (MTTFd), and diagnostic coverage (DC) for both electrical/electronic SCS and non‑electronic SCS.
• Hydraulic system robustness (HSR): System‑level fault reduction measures and HSR scoring to assess hydraulic subsystems used in SCS.
• Category classifications: Guidance on categories (e.g., Category B/1/2 and other classifications), handling of conflicting safety functions, and combining SCS elements to achieve an overall MPL.
• Information for use and maintenance: Requirements for operator and maintenance documentation.
• Normative/Informative annexes: Examples, HSR scoring examples, compatibility with other functional safety standards, and exceptions/additions to ISO 13849‑1/2.

Applications and Who Uses It

EN ISO 19014-2:2022 is intended for:

• Machine manufacturers (designing safety‑related control hardware and architectures for excavators, loaders, graders, etc.)
• Safety engineers and system integrators (evaluating MPLa, selecting components, and defining architectures)
• Regulators, conformity assessors and market surveillance bodies (assessing compliance)
• Maintenance planners and technical writers (preparing user/maintenance information aligned with safety requirements)

Practical uses include architectural design reviews, safety validation during development, supplier/component selection, and preparing technical documentation for compliance.

Related Standards

• ISO 19014-1 and ISO/TS 19014-5 - define the Machine Performance Level required (MPLr) for SCS that this part helps achieve.
• ISO 13849‑1 / ISO 13849‑2 - referenced for compatibility and application to mobile earth‑moving machinery; EN ISO 19014-2 includes notes on exceptions and additions.
• ISO 12100 - used for identification of significant hazards mitigated by SCS hardware.

Keywords: EN ISO 19014-2:2022, earth-moving machinery, functional safety, machine performance level, MPLa, SCS, hardware architecture, hydraulic system robustness, diagnostic coverage, ISO 13849-1.