HMI – MONITOUCH FOR EXPLOSIVE ATMOSPHERES – V9 Ex Series

The MONITOUCH V9 Ex explosion proof HMI is designed for Zone 2 environments with explosive atmospheres. The models are IECEx and ATEX certified, with an Ex nA IIc T5 Gc marking, ensuring safe operation in the occasional presence of flammable gases such as hydrogen or acetylene. These HMIs offer a modern interface, suitable network connectivity and a reinforced structure to meet stringent industrial requirements.

ATEX / IECEx safety certifications and compliance

Fuji Electric's V9 Ex HMIs have international certifications attesting to their reliability in explosive atmospheres. They comply with the requirements of several internationally recognized organizations:

• European ATEX Directive (2014/34/EU) : essential for equipment intended for explosive environments in the European Union. It ensures that the product meets the specific safety standards for use in hazardous atmospheres.
• IECEx certification (IEC 60079) : international standard that facilitates product acceptance in many countries outside the EU.

The marking of V9 ATEX HMI models follows the Ex nA IIC T5 Gc codification, which precisely describes the level of protection:

Deciphering the Explosion Proof marking: Ex nA IIC T5 Gc

- Ex: the product is designed for an explosive atmosphere.
- nA (non-incendive / non-sparking): the design of the HMI prevents any spark or source of ignition, even in the event of a failure.
- IIC: targeted gas category, including the most explosive ones such as hydrogen and acetylene.
- T5: maximum surface temperature of the device set at 100°C, limiting any risk of ignition by heat.
- Gc (Zone 2): equipment intended for areas where the risk of explosion is occasional, during normal operation or temporarily disrupted.

This level of certification enables the integration of the V9Ex human machine interface into safety-critical systems, while maintaining a small footprint, flexible installation and an intuitive user interface.

Technical specifications of the V9 ATEX explosion proof HMI

The V9 ATEX explosion proof HMI models have been designed with specific adaptations to meet the requirements of explosion-risk environments, in addition to their standard counterparts. These adjustments ensure an installation that complies with safety standards while maintaining the performance and ergonomics of the V9 HMI range:

- 90° vertical mounting required to ensure heat dissipation and compliance with T5 marking (100°C max).
- 8 mounting brackets required for 12.1-inch models (V9120iSD-U800 and V9120iSLD-U800) to ensure a reinforced hold, compared to 4 brackets on standard models.
- Audio port disabled in ATEX classified areas (Zone 2), to avoid any risk related to non-certified components. The port remains usable outside ATEX zones.
- ATEX marking label visible on the housing, certifying compliance with the European directive and facilitating regulatory inspections.

These features make the V9 ATEX HMIs a robust, secure and compliant solution for applications in explosive atmospheres, while ensuring continuity with the user experience of the MONITOUCH series.