Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - Manual (Page 41)

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 41
Installation and Wiring Chapter 3
7. Repeat steps 1…6 for each channel on the module.
Wiring RTDs
Three types of RTDs can be connected to the 1769-IR6 module:
· 2-wire RTD, which is composed of an RTD EXC (excitation) lead wire
and a RTN (return) lead wire
· 3-wire RTD, which is composed of a Sense and 2 RTD lead wires (RTD
EXC and RTN)
· 4-wire RTD, which is composed of a Sense and 2 RTD lead wires (RTD
EXC and RTN). The second sense wire from the 4-wire RTD is left
open.
2-Wire RTD Configuration
3-Wire RTD Configuration
EXC 3
SENSE 3
RTN 3
EXC 4
Belden 9501 Shielded Cable
Cable Shield (to Ground)
RTD EXC
Return
RTD EXC
Return
Add Jumper
EXC 3
SENSE 3
RTN 3
EXC 4
Belden 83503 or 9533 Shielded Cable
Cable Shield (to Ground)
RTD EXC
Sense
RTD EXC
Return
Sense
Return