Seeking advice on on-site cabinet compliance
Thread Content
Dear senior colleagues: Hello! Question: 1. Is it compliant to use explosion-proof cabinets and explosion-proof computers on-site? 2. If possible, is it better to use a PLC or a DCS (for the pilot plant)? 3. How should the locations be considered? What is the maximum number of points for a PLC? Can it be expanded in the future? (Basic company DCS) Thank you!
It meets the standards; for pilot-scale applications, PLC control is advisable, with around 500 input points.
Actually, you can also consult the manufacturer; P
Manufacturers are all capable of doing it; the key is whether the experts agree
Thank you. The cable entry points for the explosion-proof cabinets on site are designed in advance. What if there isn’t enough space later? Is it possible to use multi-core cables, with 24 cores or fewer? There can still be more
It mainly depends on the design requirements; for general digital signals, multi-core cables can be used. Analog signals should use 2-core cables.
It would be great to use DCS – it makes scaling up convenient
Considering the issues related to configuration (there is little experience with PLC programming, and the pilot plant settings often change), it is now planned to use a DCS remote IO system. Upon consulting with experts, for the pilot plant, explosion-proof cabinets can be placed on-site in Dezhou, Shandong.
It’s fine to set it up at the site, but long-term personnel presence there isn’t allowed, right?
It’s fine to set it up at the site, but long-term personnel presence there isn’t allowed, right?