ATEX approved small PLC
ATEX approved small PLC
(OP)
We're trying to design a small control panel for use in an ATEX Zone 1 area. So far we've found all the end devices that are suitable for this area.
We usually use an Allen-Bradley Micrologix 1500 in the US as we only have 5 inputs/7 outputs and 2 anlaog inputs through an expansion module.
Does anyone know of a small PLC like the Allen-Bradley Micrologix 1500 that is rated for use in an ATEX Zone 1 area.
We usually use an Allen-Bradley Micrologix 1500 in the US as we only have 5 inputs/7 outputs and 2 anlaog inputs through an expansion module.
Does anyone know of a small PLC like the Allen-Bradley Micrologix 1500 that is rated for use in an ATEX Zone 1 area.





RE: ATEX approved small PLC
Most PLC/DCS/SCADA/control equipment in general are rated to Class 1, Div 2, Groups A, B, C, D.
I am not familiar with any that are rated to Class 1 Div 1 (or ATEX Zone 1, or Class 1 Zone 1).
RE: ATEX approved small PLC
RE: ATEX approved small PLC
Your input is much appreciated.
RE: ATEX approved small PLC
You will be looking for an Ex 'D' enclosure (flameproof) or Ex 'P'enclosure (pressurised). An Ex 'D' enclosure large enough to accomodate a PLC will be expensive and massively constructed; an Ex 'P' enclosure will be a permanent drain on your instrument air system. You also need to consider the contingency arrangements for failure of the instrument air.
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