The Allen-Bradley 1756-IB16S is a digital safety input module designed for use with Rockwell Automation’s ControlLogix and GuardLogix control systems.
It provides sixteen (16) sinking DC inputs that monitor safety-related field devices such as emergency-stop buttons, light curtains, and safety gates.
The 1756-IB16S module operates at 15 to 31.2 V DC (nominal 24 V DC) and supports applications requiring SIL 3 and PLe functional safety performance.
When used in a GuardLogix controller platform, it helps ensure safe machine operation through integrated diagnostics and redundant signal path design.