1769-IF16C Compactlogix current analog input module

[Hani ahmed]

After reading the 1769-IF16C compact Logix analog input current module field wiring connection we noticed that it be used only with 2 wires and 3 wires current transmitters.​

Could any one please advise us how we can connect 4 wires current transmitter to this module.​

 

[Mickey]

I would use a isolator/signal conditioner.

 

[Hani ahmed]

Signal conditioning can include amplification, filtering, converting, range matching, isolation and any other processes required to make sensor output suitable for processing after conditioning not converting wiring for incoming signal from field transducer from 2 wires to 4 wire

 

[Mickey]

You said you had a 4 wire transmitter that you wanted to connect to your 1769-IF16C. An isolator will work.

What powers the 4-wire transmitter?

See below for one such device.
http://www.miinet.com/products/data_sheets/ect_din.pdf

 

[Hani ahmed]

the picture is the our module filed wiring where the transmitters are 2 and 3 wires only and uses com point for all -IN transmitters and each signal connected to +IN.
so if we need to connect 4 wire Transmitter can we connect our signal to +IN and -IN connected to com point with the others of 2 and 3 wires transmitters?

 

[Mickey]

Maybe, if doing so does not create a ground loop. An isolator is cheap insurance.