1756-IB16 Product datasheet 

1756-IB16 Functional Description

The Allen-Bradley 1756-IB16 ControlLogix 16 Pt 12/24V DC D/I Module represents a fundamental component within the ControlLogix digital input system, delivering sixteen discrete DC input channels organized in two independent eight-point groups. This modular configuration enables efficient integration into standard 1756 chassis systems, supporting both NEMA-style and spring-clamp removable terminal blocks for flexible field wiring options. The electrical characteristics of the 1756-IB16 Allen Bradley  756 Series I/O module demonstrate careful engineering with a nominal 24V DC operating voltage that maintains functionality across an extended range from 10 to 31.2V DC, ensuring reliable signal acquisition even in environments with voltage fluctuations.

Power management within the ALLEN BRADLEY 1756-IB16 ControlLogix 16-point Sinking Safety Input Module reflects optimized design principles, consuming minimal backplane power at 0.56W while managing thermal dissipation effectively through 5.1W power distribution at elevated operating temperatures. The input circuitry incorporates sophisticated filtering capabilities with user-configurable delay settings ranging from 0 to 18 milliseconds, allowing engineers to balance response speed against electrical noise immunity according to specific application requirements. This technical flexibility makes the module suitable for both basic monitoring functions and critical control applications where signal integrity is paramount.

The operational architecture of the Digital I/O Modules ROCKWELL 1756-IB16 supports advanced functionality including Change of State detection that bypasses conventional processor scanning cycles for immediate response to critical input transitions. This capability proves particularly valuable in safety-interlocked systems and high-speed manufacturing applications where traditional program scanning would introduce unacceptable latency. The robust construction of the module ensures consistent performance across industrial environments, with 250V continuous isolation protection and controlled inrush current characteristics that prevent electrical damage during cycling operations.

Implementation versatility defines the 1756-IB16 AB Digital DC Input Module, which serves equally effectively in standalone control configurations and distributed control systems including large-scale PlantPaX DCS platforms. The scalable nature of the module allows deployment across numerous installations limited only by processor memory capacity and available chassis slots, establishing it as a versatile I/O solution for discrete manufacturing, process automation, and infrastructure applications requiring reliable digital input acquisition within the Rockwell Automation ecosystem.