Allen-Bradley SLC 500

Publication 1747-UM011G-EN-P - June 2008
Wiring Your I/O Modules 113
Sinking Device with Sourcing Input Module Circuit
The field device is on the negative side of the power supply between
the supply and the input terminal. When the field device is activated,
it sinks current from the input circuit.
Sinking Device with Sourcing Output Module Circuit
The field device is on the negative side of the power supply between
the supply and the output terminal. When the output is activated, it
sources current to the field device.
Sourcing Device with Sinking Output Module Circuit
The field device is on the positive side of the power supply between
the supply and the output terminal. When the output is activated, it
sinks current from the field device.
+
_
I
Field Device
dc Power
Supply
Vdc
Input
dc
Input
Circuit
+
_
I
Field Device
dc Power Supply
dc Com
Out
dc
Output
Circuit
Vdc
+
_
I
Field Device
dc Power Supply
dc Com
Out
dc
Output
Circuit
Vdc