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

German certification body TÜV Rheinland updated its CE marking technical guidance for industrial automation products on 24 April 2026, mandating combined PLd-level functional safety (per IEC 61800-5-2) and EMC immunity testing (per IEC 61000-6-4) for all servo drives exported to the EU—including CNC machining配套 drive modules. This requirement directly affects manufacturers, exporters, and system integrators in motion control, machine tool, and automated manufacturing sectors, as non-compliant units risk market access disruption after July 2026.

Event Overview

On 24 April 2026, TÜV Rheinland issued an update to its CE certification technical guidelines for servo drives. The update requires that all servo drives placed on the EU market must demonstrate compliance with both IEC 61800-5-2 at Performance Level d (PLd) for functional safety and IEC 61000-6-4 for EMC immunity—verified through a single joint validation report. Certificates based solely on either test are no longer accepted; such standalone certifications expire on 1 July 2026.

Industries Affected

Direct Exporters & OEMs

Manufacturers exporting servo drives from China or other third countries to the EU must now obtain new joint-validation certificates. Since prior certifications were often issued separately for safety and EMC, many existing CE claims will become invalid unless revalidated under the updated protocol—potentially delaying shipments and triggering contract renegotiations.

Machine Tool System Integrators

Integrators supplying CNC machining systems to EU customers rely on certified drive modules. With legacy drive certifications expiring in July 2026, integrators face increased verification overhead and possible redesign cycles if replacement modules lack updated joint validation—especially where drive firmware or hardware interfaces affect safety-related functions.

Contract Manufacturers & EMS Providers

Electronics manufacturing service providers assembling servo drive units for OEMs must align production test plans with the new dual-criteria requirement. Joint validation involves coordinated test setups and documentation traceability across safety and EMC domains—raising complexity in factory-level compliance verification and QA reporting.

What Enterprises and Practitioners Should Focus On

Monitor official updates from TÜV Rheinland and EU Notified Bodies

The updated guidance is currently published as a technical note—not yet reflected in harmonized standards or EU Commission notices. Companies should track whether this becomes a formal amendment to EN IEC 61800-5-2 or triggers revisions to the EU Machinery Regulation’s conformity assessment modules.

Prioritize high-volume and EU-bound drive SKUs for joint retesting

Given expected short-term lab capacity constraints—especially in China—enterprises should identify which servo drive models have highest EU shipment volume or contractual delivery deadlines before July 2026, and schedule joint validation accordingly to avoid bottlenecks.

Distinguish between certification validity and product compliance status

A valid CE certificate alone does not guarantee market acceptance post-July 2026. Distributors and end users may require proof of joint validation (e.g., test report number, scope statement referencing both IEC 61800-5-2 PLd and IEC 61000-6-4). Internal documentation and customer-facing datasheets should reflect this distinction.

Review supply chain handover points for traceability

Joint validation requires full documentation traceability across safety and EMC test data—including firmware versions, PCB layouts, and enclosure configurations. Suppliers must ensure version-controlled records are shared transparently with certification bodies and downstream integrators to support audit readiness.

Editorial Perspective / Industry Observation

From industry perspective, this update is less a sudden regulatory shift and more a formalization of long-standing best practices in functional safety integration. Analysis shows that leading EU machinery manufacturers have already required co-validated drives in procurement specs since 2023—particularly for collaborative and high-speed motion applications. TÜV Rheinland’s move appears to codify de facto expectations into certification policy. Current more appropriate interpretation is that it signals tightening alignment between safety and EMC assessment frameworks—not the introduction of wholly new technical thresholds. However, the July 2026 deadline and lack of transitional allowances mean implementation timing, rather than technical feasibility, is the dominant near-term concern.

Conclusion
This update underscores the growing interdependence of functional safety and electromagnetic compatibility in industrial drive certification. It does not introduce novel safety or EMC limits but enforces integrated verification—a procedural tightening with tangible operational impact. For affected enterprises, the situation is best understood as a compliance synchronization milestone, not a technical overhaul. Proactive coordination across R&D, quality, and regulatory affairs teams—centered on documented joint validation—is the most pragmatic path forward.

Information Sources
Main source: TÜV Rheinland official technical guidance notice dated 24 April 2026.
Note: Ongoing observation is required regarding potential adoption by other EU Notified Bodies and inclusion in future revisions of harmonized standards under the EU Machinery Regulation.