Flow transmitter IFC 020
Flow transmitter IFC 020
(OP)
Hi there .
I was wondering if you can help me with the connection of signal 4-20 MA output from a KROHNE IFC 020 flow transmitter to an analog input card of PLC because i beleieve that the wiring diagramm in KROHNE manual is wrong. The analog input should be treated as 4-wire.
Thank you very much for your time.
I was wondering if you can help me with the connection of signal 4-20 MA output from a KROHNE IFC 020 flow transmitter to an analog input card of PLC because i beleieve that the wiring diagramm in KROHNE manual is wrong. The analog input should be treated as 4-wire.
Thank you very much for your time.





RE: Flow transmitter IFC 020
David Baird
mrbaird@hotmail.com
Sr Controls Engineer
EET degree.
Journeyman Electrician.
RE: Flow transmitter IFC 020
What kind of PLC are you using?
Just checked the website. It appears they do not make a 24vdc powered signal converter for the 020 model. So it is most likely a 4 wire connection.
Good luck! Let me know how you made out
Quote: "Its not what you know, its who you know" - anybody trying to find a decent job
RE: Flow transmitter IFC 020
You need to have an isolated 4-20ma input module at the PLC. Connect the PLC A/I + connection to d2 (I+) and PLC A/I - point to d4 (I). If your PLC has only A/I module with common connection you will have to use signal insolator between the Krohne and the PLC.
See the IFC 020 Connection diagram at:
http://www.krohne.com/html/dlc/SM_IFC020_e_72.pdf
Page 12.
The point is that the Flow transmitter is controlling the 4-20ma output by the (-) connection and most PLC A/I modules does not like it...