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

On April 22, 2026, TÜV Rheinland issued an updated technical notice mandating joint validation of functional safety (PLd per IEC 61800-5-2) and EMC immunity (IEC 61800-3 Ed.3) for servo drives under CE marking. Industrial automation equipment manufacturers—especially those supplying to European OEMs—and certification service providers must now reassess testing timelines, compliance workflows, and supply chain coordination.

Event Overview

On April 22, 2026, German certification body TÜV Rheinland published a new technical notice for CE certification of servo drives covered by IEC 61800-5-2. The notice requires that functional safety (at Performance Level d, PLd) and electromagnetic compatibility (EMC) immunity testing per IEC 61800-3 Edition 3 be conducted within the same test cycle. Previously accepted standalone certifications no longer satisfy the requirement. Affected manufacturers—including many based in China who previously completed only single-scope tests—must now undergo retesting. The combined verification extends average certification duration by 14 days. This delay has already caused several European OEMs to pause new project sourcing decisions.

Which Subsectors Are Affected

Industrial Automation Equipment Manufacturers (OEM Suppliers)

Manufacturers supplying servo drives directly to European machine builders face immediate compliance pressure. Since PLd and EMC were historically tested separately—often by different labs or at different times—the new joint requirement necessitates revised test planning, lab coordination, and documentation alignment. Delays in certification directly impact product launch schedules and contractual delivery commitments.

CE Certification Service Providers & Test Laboratories

Labs offering IEC 61800-5-2 or IEC 61800-3 testing must now ensure integrated capability: simultaneous functional safety and EMC immunity assessment under one audit scope. Providers lacking cross-domain expertise—or infrastructure supporting concurrent fault injection and disturbance application—may face capacity constraints or need to form new partnerships.

European Machine Builders (OEMs)

OEMs integrating servo drives into industrial machinery are impacted indirectly but critically. Their procurement timelines now depend on suppliers’ ability to deliver jointly validated CE documentation. The reported project delays indicate tightening scrutiny during design-in phases; pre-certified components without joint validation may no longer be accepted for new platform development.

What Relevant Companies or Practitioners Should Monitor and Do Now

Track official updates from TÜV Rheinland and EU Notified Body communications

The technical notice is effective as of April 22, 2026—but implementation guidance (e.g., grace periods, grandfathering clauses for existing certificates, or transitional arrangements) remains unconfirmed. Stakeholders should subscribe to TÜV Rheinland’s regulatory alerts and monitor notifications from other EU Notified Bodies for alignment or divergence.

Review current and upcoming servo drive models against the joint validation requirement

Manufacturers should identify which products are in active CE renewal cycles or scheduled for new certification before Q3 2026. Prioritize models destined for European OEMs with strict compliance gates. Reassess whether legacy test reports can be leveraged—or if full retesting is unavoidable—based on lab records and evidence of synchronized test conditions.

Engage early with accredited labs capable of integrated PLd + EMC testing

Joint validation demands coordinated test setups: e.g., applying EMC disturbances while monitoring safety-related control functions under fault conditions. Not all labs possess both IEC 61800-5-2 functional safety accreditation and IEC 61800-3 Ed.3 EMC immunity accreditation under the same Notified Body designation. Confirm lab scope validity and book capacity well in advance—current lead times may exceed standard estimates due to increased demand.

Update internal compliance checklists and supplier evaluation criteria

Purchasing and engineering teams should revise component qualification protocols to explicitly require proof of joint PLd/EMC validation—not just separate certificates. For Tier 2 and Tier 3 suppliers, clarify responsibility for test coordination and documentation traceability to avoid gaps in the conformity assessment dossier.

Editor Perspective / Industry Observation

From industry perspective, this update signals a broader shift toward integrated risk assessment in industrial automation—not just additive compliance. It reflects growing recognition that safety function integrity cannot be assured in isolation from electromagnetic stressors. Analysis来看, the requirement is less about tightening thresholds and more about enforcing test realism: verifying that safety mechanisms remain operational *while* subjected to real-world EMC disturbances. Current更值得关注的是 whether other Notified Bodies (e.g., DEKRA, SGS, UL Solutions) will adopt similar joint validation expectations—making this a potential de facto benchmark beyond TÜV Rheinland’s scope. Observation来看, it also underscores how regional regulatory interpretations increasingly influence global supply chain practices, especially for exporters reliant on single-point certification strategies.

In summary, this change does not introduce new safety or EMC limits—but reshapes how compliance must be demonstrated. It elevates process rigor over modular certification and favors suppliers with mature functional safety and EMC engineering integration. Rather than representing a sudden disruption, it is better understood as a formalization of converging technical expectations already emerging in high-reliability industrial applications.

Source: TÜV Rheinland Technical Notice (issued April 22, 2026); public statements regarding CE certification for servo drives under IEC 61800 series standards. Note: Transitional provisions, enforcement timelines, and harmonization status across other EU Notified Bodies remain under observation.