Electronics > Projects, Designs, and Technical Stuff
What do you think of this NPFA20 compliant diesel fire pump panel?
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rvalente:
Hello Mates,

I do not have the intention to criticize this company work, just want to know your thoughts about this construction pros and cons
Gregg:
It is very neat and tidy.  Maybe you can post a copy of a block diagram or schematic so we can see why it needs to be so complicated. 
I have only worked on old school relay logic fire pump controls which were very robust and quite easy to troubleshoot.
Then there is trusting lives to an Arduino questions.
rvalente:
Attached is the schematics, its in portuguese but, google can help

https://drive.google.com/drive/folders/1OXi2Jw7xf9LyVUrQ9oulzOOlMF8eJ4fP?usp=sharing
NiHaoMike:

--- Quote from: Gregg on November 01, 2019, 10:49:19 pm ---Then there is trusting lives to an Arduino questions.

--- End quote ---
I'm going to guess the Arduino is only for functions that are not safety critical like data logging while the PLC does the safety critical stuff.
Neomys Sapiens:
Well, it might be perfectly legal, but I do not like the practice of mounting naked PCBs in switchgear cabinets like this one.
A certain form of build will cause the people to treat it in the same way. Like opening the cabinet and turning around with a extension cord swinging -BOP!- onto the PCB.  :-\
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