No. The "ia" bit refers to the electronic device in the Exd housing so for cabling follow Exd rules and not intrinsically safe. Seems OTT to have an Exd housing in a safe area by the way...
No you won't need data logging - everything I mentioned can be done with basic PLC functionality and either a bit that tells you the device has been disconnected or your own code to detect it.
Personally I would manage the controller input as in my post above since that is the source of the...
I've not done it but I'd continually write the current input value to a "last scan" register (or a timed back up register if more suitable) and then when I got the device error I'd switch to using this saved value.
When the device returns from its error condition switch back over after a...
Depends what you need out of it. CompEx (modules EX01,02,03,04) is the obvious one I'd recommend, having done it myself, but you won't be considered "competent" if you don't already have a recognised electrical installation certificate. There is a design course too which costs more - for some...
We have an old Concerto viewer (file dated 1999) which I believe is free but can't be certain. The company that handles Concerto now is GFI Informatics although you will find no evidence of that on their website.
Haven't used Dahlander motors for many years and even then only small DOL circuits. I'm switching an 18.5/20kW 2/4pole Dahlander wound motor in star-delta and not too sure how to connect it. Any links to circuits would be much appreciated - looked everywhere and can't find any.
I assume you...
WSCAD is not bad - tried it for evaluation (demo version is available at http://www.wscad.com) but ended up using Eplan. Eplan is also v. expensive although very good...
Not sure if the same is true in the US but here in Euroland the doors do not need to be interlocked if all the equipment inside is designed to prevent accidental touch i.e IP20 "finger proof".
