Issue
How to wire the built in analog input of the M221 to a Dwyer 626 pressure transmitter?

Product Line
SoMachine Basic / EcoStruxure Machine Expert-Basic, Modicon M221 PLC

Environment
Analog Input wiring

Resolution
The Dwyer 626 is a 3-wire connection which will requires it's own power supply.
The - (negative of M221) goes to the common and + (positive of M221) goes the white.  See below for more information:

Dwyer pressure transmitter:

The receiver would be the M221 in this case.




For the types of wires required, also see the Modicon M221 Logic Controller User Guide
See Section 3.3 "Wiring Best Practices"
Document Link: https://www.se.com/ww/en/download/document/EIO0000000976/

Julkaistu:Schneider Electric Suomi