Perle Systems 5500161-40 manual Temperature Input, Thermocouple, RTD 2-Wire, RTD 3-Wire

Wiring I/O Diagrams

Temperature Input

If you are using RTD sensors, a short detected status will be displayed if the wires are connected improperly. RTD or thermocouple sensors will display an open detection status when the circuit is broken.

Thermocouple

To connect to Channel A1 with a 2-wire cable, connect the positive wire to A1+ and the negative wire to A1-; you will not be using the A1s connection.

A1+ A1- A1s A2+ A2- A2s

A3+ A3- A3s A4+ A4- A4s

+

-

RTD 2-Wire

In a 2-wire RTD configuration, connect the excite wire to A1-, the return wire to A1+, and jumper the sense wire from A1s with a insulated wire going to A1+.

	A1+	A1-		A1s	A2+ A2- A2s	A3+ A3-	A3s	A4+ A4- A4s
return					sense
			excite

RTD 3-Wire

In a 3-wire RTD configuration, connect the return wire to A1+, the excite wire to A1-, and the sense wire to A1s.

A1+ A1- A1s A2+ A2- A2s

A3+ A3- A3s A4+ A4- A4s

return

excite

sense

388 IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0