Allen-Bradley 1793-IB4 Digital Input Module

The Allen-Bradley 1793-IB4 is a 4-channel 24 V DC sinking digital input module belonging to the Flex Integra product family. It monitors ON/OFF discrete field signals from switches, proximity sensors, and photoelectric devices, transmitting input status data to a central controller. Designed with integrated connection terminals, this compact module provides localized digital signal acquisition for small-scale automation machinery.

Input Signal Processing and Electrical Characteristics

The module features four independent input channels operating on a nominal 24 V DC sink configuration. When field sensors or contact closures switch current to ground, the internal optocouplers convert the 24 V DC voltage level into digital logic signals across the module interface for real-time PLC processing.

Physical Architecture and Mounting

Built within the Flex Integra compact form factor, the 1793-IB4 combines the input electronics and termination points into a single, integrated block. It attaches directly to a standard DIN rail, reducing cabinet space requirements and streamlining signal wiring layout during panel construction.

Technical Specifications

Frequently Asked Questions

Q: What signal switching configuration does the Allen-Bradley 1793-IB4 use? A: The 1793-IB4 uses a 24 V DC sinking input configuration, requiring connected field devices to supply current into the module terminals.