TÜV Rheinland Updates CE Requirements for Servo Drives (PLd + EMC)

On April 18, 2026, German certification body TÜV Rheinland issued a revised technical notice mandating combined functional safety (PLd per ISO 13849-1) and EMC immunity (IEC 61000-6-2 Ed.4) validation for servo drives used in Smart Factory and CNC machining applications — impacting CE marking eligibility across the EU supply chain.

Event Overview

On April 18, 2026, TÜV Rheinland published a new technical bulletin concerning CE certification for servo drives governed by IEC 61800-5-2. The bulletin requires that functional safety performance at Performance Level d (PLd) and electromagnetic compatibility (EMC) immunity compliance with IEC 61000-6-2 Edition 4 must be verified within the same test cycle. Products previously certified to either requirement individually will no longer qualify for the updated CE mark under this policy.

Which Sub-Sectors Are Affected

Smart Factory System Integrators
Servo drives are core motion-control components in automated production lines. Integration into PLC-based or safety-rated control architectures now requires joint PLd/EMC evidence. Failure to provide such documentation may delay system-level CE conformity assessments and disqualify bids for EU-funded Industry 4.0 projects.

CNC Machine Builders
OEMs assembling CNC machine tools rely on certified servo drive modules for final machinery CE marking under the Machinery Directive (2006/42/EC). Under the new requirement, drive suppliers must supply test reports demonstrating concurrent PLd and EMC validation — otherwise, machine builders face retesting, redesign, or certification rejection at the whole-machine level.

Servo Drive Manufacturers & Exporters
Manufacturers supplying into the EU market must adapt their product testing protocols and technical documentation. Previously accepted standalone certifications (e.g., PLd-only or EMC-only reports) are insufficient. This affects both new product launches and legacy models still in active export cycles.

EU-Based Distributors & Technical Support Providers
Distributors handling technical documentation for end customers must verify that incoming servo drive shipments include valid joint-validation reports. Support teams may need to update internal compliance checklists and customer-facing datasheets to reflect the updated CE evidence requirements.

What Relevant Companies or Practitioners Should Monitor and Do Now

Track official updates from TÜV Rheinland and EU Notified Bodies

The bulletin is effective as of April 18, 2026, but implementation timelines for existing stock or pending applications remain subject to interpretation by individual Notified Bodies. Companies should monitor clarifications from TÜV Rheinland and other EU-accredited bodies regarding grace periods, grandfathering provisions, or transitional arrangements.

Review current servo drive inventory and procurement pipelines

Manufacturers and integrators should identify which servo drive models in active use or procurement lack joint PLd/EMC validation reports. Prioritize verification for models deployed in safety-critical motion sequences (e.g., robotic axis control, emergency stop-linked axes) where PLd is explicitly required.

Align technical documentation with the joint-validation requirement

Update internal technical files, Declaration of Conformity templates, and customer-facing compliance summaries to explicitly reference combined PLd and IEC 61000-6-2 Ed.4 test evidence — not just separate certifications. Avoid ambiguous phrasing such as “complies with safety and EMC standards” without specifying concurrent validation.

Engage early with test laboratories accredited for both functional safety and EMC

Not all labs hold dual accreditation for PLd assessment (under ISO 13849-1 or IEC 62061) and full IEC 61000-6-2 Ed.4 immunity testing. Confirm lab capability before scheduling tests — especially for high-power or multi-axis drive configurations where test setup complexity increases.

Editorial Observation / Industry Perspective

From industry perspective, this update signals a tightening of harmonized interpretation between functional safety and EMC requirements — two domains historically assessed in isolation. It reflects growing recognition that EMC disturbances can compromise safety-related control functions, particularly in high-density industrial automation environments. Analysis来看, the requirement is less about introducing new technical thresholds and more about enforcing integrated risk assessment in certification practice. Current more appropriate understanding is that this is a procedural alignment signal rather than a de facto technical upgrade — but its enforcement will reshape how conformity evidence is structured and validated across the supply chain.

Conclusion
This change underscores the increasing interdependence of safety and EMC compliance in industrial drive systems. For stakeholders, it means shifting from checklist-based certification to integrated validation planning. It is best understood not as an isolated regulatory event, but as a reinforcement of systemic conformity expectations under the EU’s New Legislative Framework — where evidence must demonstrate coherent performance across multiple essential requirements, not just compliance in silos.

Information Source
Main source: TÜV Rheinland Technical Bulletin (published April 18, 2026). Ongoing observation is needed regarding implementation guidance from EU Notified Bodies and potential alignment with upcoming revisions to EN IEC 61800-5-2.