On this page
- Buy the base document and check both amendments
- What the document addresses
- Compare proposed frameworks through the actual assignment
- Questions that improve the purchase brief
- Keep the standards register usable
- Example: changing the control hardware of a palletiser
- Frequently asked questions
- Related purchasing guidance
Buy the base document and check both amendments
Use the exact records for A1:2024 and A2:2026 when completing the order. Ask whether your required national publication incorporates them, rather than assuming every catalogue product has the same packaging.
What the document addresses
The public scope concerns design, integration and validation of machinery safety-related control systems in high or continuous demand. It distinguishes that work from complex programmable subsystem development, electrical shock hazards, other machine safeguarding and specific security measures.
Give the technical lead a description of the machine and function before selecting the standard. Ask which parts of the proposed work are system integration and which are device development or other safety tasks. A product advertised with an integrity claim does not explain all those boundaries.
Compare proposed frameworks through the actual assignment
| Comparison point | Evidence to request |
|---|---|
| Chosen framework | Reason it fits the function, technology and project specification. |
| Design boundary | Included equipment, interfaces and external dependencies. |
| Available component data | Sources, versions and conditions the supplier plans to use. |
| Validation work | Deliverables, reviewers and information needed for completion. |
EN ISO 13849-1 is another document to examine when defining the machinery control-design basis; its publisher scope describes its particular approach. Ask the responsible engineer to justify the selected framework. This comparison does not assert equivalence between methods or permit a buyer to convert one claim into another.
Questions that improve the purchase brief
- Function: what must the system achieve, and how is that purpose recorded?
- Configuration: which devices, software versions and connected equipment support the proposed design?
- Assumptions: what operating, installation and maintenance conditions limit the supplier's claim?
- Responsibility: who supplies missing data and resolves interfaces with other contractors?
- Change: what happens when a component becomes unavailable or the operating arrangement changes?
These original procurement prompts help reveal exclusions in quotations. Ask bidders to distinguish included engineering from information supplied by others. An apparently complete package may rely on customer input that has not yet been assigned to anyone.
Keep the standards register usable
Record the full European reference, amendment treatment and the publication actually supplied. If the quotation names IEC instead of EN, ask the assessor to resolve which text is required. The international and European documents should remain distinguishable in the purchase order and project library.
Keep calculations, configuration records and reviews connected to the engineering baseline they concern. This makes later purchasing decisions easier when a replacement device has the same commercial function but different evidence or conditions of use.
Example: changing the control hardware of a palletiser
A manufacturer changes the controller in a palletising machine because the original hardware is no longer available. The contractor proposes new hardware and an updated programme, with a broad assurance that the safety functions are unchanged.
The buyer requests a list of affected functions, interfaces and assumptions. The responsible engineer confirms the assessment framework and how the new configuration will be reviewed and validated. The document order identifies the EN IEC 62061 base and required amendments, while the service order identifies deliverables and ownership of unresolved information. The team retains the old evidence and records why any conclusions can or cannot be carried forward.
This is a fictional purchasing example, not a finding about a particular replacement controller.
Frequently asked questions
Is A2:2026 still a draft?
The checked Genorma record lists EN IEC 62061:2021/A2:2026 as published. Match that exact record, rather than a similarly named draft.
Should I choose this or EN ISO 13849-1?
Ask the technical owner to justify the framework for the function and available evidence. The standard number alone is not a sufficient comparison.
Does it cover every machine hazard?
Its public scope identifies functional-safety boundaries. Allocate electrical, safeguarding and security work separately in the project brief.
Related purchasing guidance
See control-system design, machine electrical equipment and the machinery standards overview.