Temperature control and scaling question....

Hi guys,

It's me again with another question. I have like three projects going on and I'm going crazy. I have this OMRON E5EN temperature controller that outputs a 4-20ma signal that can be setup to represent the "Process Temperature".

I have a PLC which contains a 1746-NIO4I module that has 2 input nodes available. I want to bring this 4-20ma signal into this module and scaled it to represent the "Process Temperature", so I can do a LOW and MAX limit check and shutdown a process if temperature limits are exceeded.

Can I accomplish this task with what I have at my disposal gentlemen. Also will the "Scale Min" and "Scale Max" on my SCP function equal to the range of operation of the thermocouple connected to this controller.

Yes you can.. On your scp block, write the analog input address at the input value.
Ex.
Input I1.0
Input Min - 0
Input Max - 4095
Scale Min -
Sclae Max -

the input min and max will depend on how you configure your analog input (check IO configuration) raw/proportional or scaled for PID.

Where do I check how is the input configure? I double click on I/O co

nfiguration and selected the card and then hit advance but I can determine if its raw, proportional

http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1746-um005_-en-p.pdf Pg.3-5

will you carry out a temperatrue PID controller or an Proportional controller?