Allen-Bradley 1794-IB16D Installation Instructions Manual page 13

FLEX I/O Digital Input and Output Modules with Diagnostics
Sensor Diagram for the 1794-IB16D Module
External External
+
_
Power Power
Supply Supply
3-Wire 3-Wire
Sensor Sensor
3-Wire 3-Wire
Sensor Sensor
External External
+
_
Power Power
Supply Supply
3-Wire 3-Wire
Sensor Sensor
Unused input port -
Dummy resistor needed or
Fault LED remains lighted.
Sensor Diagram for the 1794-OB16D Module
Load
1794-IB16D 1794-IB16D
Sensor-power lines - Sensor-power lines -
Detect open wire Detect open wire
Detect short circuit Detect short circuit
1794-IB16D 1794-IB16D
Dummy Dummy
Resistor Resistor
20kΩ, ≥1/8W
External
+
Power
_
Supply
Unused output port -
Dummy resistor needed or
Fault LED remains lighted.
External External
+
_
Power Power
Supply Supply
2-Wire 2-Wire
Sensor Sensor
2-Wire 2-Wire
Sensor Sensor
External External
+
_
Power Power
Supply Supply
Shunt Shunt
Resistor Resistor
20kΩ, ≥1/8W
Shunt Shunt
Resistor Resistor
20kΩ, ≥1/8W
1794-OB16D
Publication 1794-IN096D-EN-P - June 2018
1794-IB16D 1794-IB16D
Sensor-power lines - Sensor-power lines -
Detect open wire Detect open wire
1794-IB16D 1794-IB16D
Dummy
Resistor
10kΩ, ≥1/8W
13