12/22/2014 10:06 PM | |
Posts: 56 Rating: (1) |
anyone know? |
12/22/2014 10:37 PM | |
Joined: 9/27/2006 Last visit: 9/18/2024 Posts: 12282 Rating: (2684) |
Hello gdglisch; Your question is not perfectly framed. ET 200 modules come in many forms and structures, and few of these have front connectors. But your instinct is correct: it is the ET 200 units as a whole that recieve an ATEX certification, not the connection units independantly. The ET200M is based on S7-300 I/O, so they use front connectors; these can be used in EX zones with ATEX certifications, as can be seen in this document, but only up to zone 2 or 22: SIMATIC Automation Systems S7-300, ET 200M Ex I/O Modules One type of ET 200 that is designed to work in explosive areas is the ET 200iSP, but it has no front connector. SIMATIC Distributed I/O ET 200iSP Have a look at the attached illustration, taken from a Siemens ET 200 presentation brochure, comparing the ATEX certification of various ET 200 families. Hope this helps, Daniel Chartier |
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