Is there available option for additional corrosion protection for AC800M and S800IO modules - e.g. coated boards?
As per data sheet AC800M and S800IO are specified as G3 compilant, is it possible to have additional protection against aggresive gases for example?
In our last project we ended up going with Axiolione F modules on Profinet. The XC range is for "extreme conditions". The site (recycled paper mill) had significant corrosion issues due to poor air quality in the plant.
We installed the controllers in a properly air conditioned rack room and the Remote IO modules in the plant where the air quality could not be controlled.
I'm also aware of another site (a geothermal steam power generation with very high sulphur levels) that simply had the boards conformal coated by a local supplier. It voids the warranty, but solves the problem of rotten electronics.