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i need to know about its wiring connection to the plc input card
Hi Abdul,
There are two ways to connect RTD to PLC are :
1) If you have RTD module in PLC so it will get directly connected just need to know the wiring.
2) RTD will be connected to transmitter which will generate signals( mA DC or V DC) to PLC analog modules.
Thanks
First Thing is the selection RTD type to be installed and connected to PLC as the Tempraute requirments. Normally the old PLCs have no have no RTC port, to connect RTD to them, the R2I transmitter were used to interface the RTD to PLC through the AI card.Also it is important to know the numbers of RTD wires2,3, or4 wires to connect at the proper points in the module or the R2I transmitter.
Different type of plcs handle it dirrently.
However in general, most of the PLCs have sperate RTD Modules.
Depending on the type of RTD you are using , you can connect your RTD with the RTD Modules.
Normally there are3 wire RTD or4 Wire RTD, but wiring is mostly same as4th wire is left open.
you need analog card for the PLC to receive the signal from RTD.
analog resuilt (resistance or current ) so check the data sheet of your plc if its with AI option or you can use the A/D convertor (Analog to BCD or what ever matches you) and you can creat the programe for comparasion or diffrance in plc also there are many ways to comply it as your requirments .texmate and motrona have big range and options ready to connect to almost logic controllers.