How come you dont see more PLC's in buildings?
I understand price is about triple to have a system like this in there but from what little I know and even less than Ive read these things are like cockroaches - they never die?
One guy put it best - He asked have you ever seen a HVAC Controller 2 miles beneath the earth in a extremelly humid and dusty environment.
The answer is no - he goes on to explain all of the things in a coal mine PLC's control. Other than a Siemens system at the mall I have never seen a PLC used in HVACR. Everything was HVACR specific?
Has anyone ever been the architect behind the design for one of these systems?