This document provides guidance for ATEX applications, including classification, marking, and installation schemes
This ATEX guide explains how Schneider Altivar 61 and Altivar 71 variable speed drives can be used safely in explosive gas or dust atmospheres. It describes the integrated "Power Removal" safety function, compliance with IEC/EN standards, and the required ATEX markings.
The document provides detailed cabling schemes for different ATEX zones, instructions on connecting thermal detectors, and the required yearly safety‑loop test. It also clarifies which inputs may be used for motor thermal protection and the role of safety modules in ATEX applications.
| Safety function | Power Removal |
|---|---|
| Dedicated ATEX input | PWR input |
| Periodic safety test frequency | At least once a year |
The PWR input must be used; inputs LI6, TH+, and TH‑ are not allowed for ATEX motor thermal protection.
The safety loop must be activated at least once a year for preventive maintenance.
No, the drives must be installed in a safe area outside the hazardous ATEX zone.