Isolated/non-isolated analog inputs
Isolated/non-isolated analog inputs
(OP)
Is there a rule of thumb for specifying isolated analog input PLC modules vs. non-isolated? I can see that isolation is needed if the analog signals are different (0-10 vs 4-20). And I understand the wiring diffences between the two.
I have a CompactLogix application where I need to bring in 2 4-20mA siganals. The signals are from a measuring light curtain controller that is in the same panel as the PLC.
1769-IF4 or 1769-IF4I?
I have a CompactLogix application where I need to bring in 2 4-20mA siganals. The signals are from a measuring light curtain controller that is in the same panel as the PLC.
1769-IF4 or 1769-IF4I?





RE: Isolated/non-isolated analog inputs
You application sounds like none of these are present. It sounds very benign.
I would not bother with "isolated" in your case.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: Isolated/non-isolated analog inputs
Roy
RE: Isolated/non-isolated analog inputs