Allen-Bradley 1756-OB16I Digital Output Module

The Allen-Bradley 1756-OB16I is a 16-point digital output module for ControlLogix PLC systems that provides discrete output signaling to drive relays, indicators, solenoids, and actuators. It racks into a ControlLogix I/O chassis and communicates via the backplane to the ControlLogix controller. The module delivers 16 discrete output channels with sinking or sourcing outputs depending on the version, and supports industrial DC or AC load voltages on the appropriate variant. It is designed for mounting in industrial-control panels and automation racks, operating under industrial-rated temperature conditions and is installed within a control or PLC enclosure to protect outputs. Common applications include manufacturing production lines, material handling systems, conveyor control, water and wastewater facilities, HVAC control panels, and automated process equipment where external devices must be driven reliably. Common replacements include Allen-Bradley 1756-OB16E Digital Output Module, Allen-Bradley 1756-OB32 Digital Output Module, and Allen-Bradley 1734-OB16E POINT I/O Output Module.