Allen-Bradley 1756-IB16S ControlLogix Safety IO Module

Allen-Bradley 1756-IB16S is a 16-channel, 24V DC sinking safety input module for Rockwell's ControlLogix safety I/O. It converts 16 independent safety signals—from devices such as E-stops, safety interlocks, and guarded-area switches—into safe-state data for a safety-enabled Logix controller, supporting dual-channel architectures that meet SIL CL3, PL e, and Cat 4 requirements when wired with appropriately certified devices. Integrated into a ControlLogix safety network, the IB16S works with Studio 5000/Logix Designer configurations and provides real-time input monitoring to the safety CPU, enabling reliable fault detection and safe operation of automated machinery. With 16 discrete input channels and 24V DC compatibility, it is suitable for mid- to high-density safety sensing in manufacturing lines, robotic cells, and packaging equipment, where rapid, deterministic safety input evaluation is essential. Typical applications include machine guarding, emergency-stop circuits, safety interlocks, and other guarded safety inputs within a Safety PLC-enabled ControlLogix system.