Rockwell Automation 1769-L23E-QB1B - DC Inputs Wiring Diagram

CompactLogix Packaged Controllers 17
Publication 1769-IN082A-EN-P - July 2008
DC Inputs Wiring Diagram
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Sinking/Sourcing Inputs - Sourcing/sinking describes the current flow between the I/O and the field device. Sourcing
I/O circuits supply (source) current to sinking field devices. Sinking I/O circuits are driven by a current sourcing field device.
Field devices connected to the negative side (DC Common) of the field power supply are sinking field devices. Field devices
connected to the positive side (+V) of the field supply are sourcing field devices. Europe: DC sinking input and sourcing
output circuits are the commonly used options.
+ DC (sinking)
- DC (sourcing)
24V DC
+ DC (sinking)
- DC (sourcing)
- DC (sinking)
+ DC (sourcing)
- DC (sinking)
+ DC (sourcing)
+ DC (sinking)
- DC (sourcing)
24V DC