Carlo Gavazzi Goes Wireless: EM600 Series Adds Wi-Fi Option for Industrial Energy Monitoring

The Problem: Running Ethernet Isn't Always Practical

Energy monitoring systems increasingly need to integrate with building management systems, MES platforms, and cloud-based analytics tools. The challenge: many facilities don't have Ethernet infrastructure where it's needed, or running new cable is cost-prohibitive. Retrofit situations, multi-tenant buildings, and分散facilities create deployment headaches that force engineers to compromise on monitoring coverage or accept expensive infrastructure upgrades.

Carlo Gavazzi identified this friction point in their EM600 B (Ethernet) platform. The hardware worked. The accuracy was there. But wireless connectivity required external gateways or bridge devices, adding complexity, cost, and potential failure points.

The Solution: EM630 W and EM640 W with Native Wi-Fi

Carlo Gavazzi's Italian competence center developed the EM630 W and EM640 W as direct wireless extensions of the EM600 B line. The approach is pragmatic: give engineers two Wi-Fi operating modes for different scenarios.

Access Point mode enables 1-to-1 direct connection for configuration through the embedded webserver. This handles initial setup without requiring network access. For production integration, Wi-Fi LAN mode connects the analyzer directly to existing infrastructure as an alternative or supplement to Ethernet.

The platform retains the multiprotocol architecture from the wired versions. Engineers can deploy Ethernet, Wi-Fi, or both simultaneously, with Modbus RTU or M-Bus available through plug-in modules (O1, S1, M1). The REST API supports HTTPS connections for direct cloud integration without middleware.

"The W variants eliminate the external gateway requirement for most industrial and building applications. That's a meaningful reduction in bill of materials and configuration overhead." — Engineering specification document

MID certification carries over unchanged, making these viable for fiscal metering and sub-billing applications where type approval matters. Accuracy specifications match the base EM600 B series.

What This Means for Your Next Project

The EM600 W targets four application areas: industrial process monitoring, commercial building energy management, renewable energy installations, and submetering in multi-tenant environments.

For industrial applications, the wireless option matters most in facilities where analyzer placement is constrained by measurement points rather than cable routes. Machine-level submetering in existing plants often benefits most.

For building applications, the plug-in module approach handles legacy M-Bus meters alongside new Modbus devices on the same platform.

Deployment flexibility comes at a cost premium over the Ethernet-only variants. Engineers should evaluate whether the wireless capability actually solves a real problem on their specific project rather than adding Wi-Fi on principle.

The REST API documentation and webserver interface are available through Carlo Gavazzi's automation division for engineers evaluating integration requirements.

M4S TAKE

My take: certifications like this matter because they give buyers a defensible reason to shortlist a supplier. In a market where everyone claims quality, third-party validation is the difference between being considered and being ignored.

Simon McLoughlin