Allen Bradley 1756-IV32 ControlLogix 32-Point Sourcing Input Module

Product Overview

The Allen Bradley 1756-IV32 acts as a high-density digital interface for the ControlLogix platform, providing 32 distinct input points to monitor field-side device states. This sourcing input module interfaces directly with "sinking" field devices, such as sensors and switches, allowing current to flow from the module to the device. By supporting high-density I/O configurations, it enables large-scale automation without expanding the physical chassis footprint. We supply this unit as 100% Brand New and original factory equipment, ensuring total compatibility with your 1756 chassis system.

Technical Specifications

The 1756-IV32 utilizes a grouped architecture to manage high-speed signal acquisition across a broad DC voltage range.

Engineering Advantages

• High-Density Cabinet Optimization: The 32-point design doubles the input capacity compared to standard 16-point modules. This concentration reduces the number of required I/O modules and chassis slots, lowering total system costs and shrinking enclosure size.

• Sourcing Circuit Architecture: This module provides the voltage to the field device (sourcing). This configuration simplifies wiring for sinking output sensors (NPN), allowing for straightforward integration with a variety of industrial electronic components.

• Grouped Isolation Integrity: By dividing the 32 points into two independent groups of 16, the module provides electrical separation between different signal zones. This design prevents a single electrical fault in one group from compromising the signals in the second group.

• Software-Configurable Filtering: Engineers define input filter times via Studio 5000 software to eliminate contact bounce from mechanical switches. This digital filtering ensures the PLC logic receives only clean, debounced signals, preventing erratic machine behavior.

• Removal and Insertion Under Power (RIUP): The 1756-IV32 supports hot-swapping capabilities. Maintenance teams replace the module while the chassis remains powered, maintaining uptime for adjacent modules and minimizing production interruptions.

FAQs

• Is this 1756-IV32 unit new or surplus?

  We guarantee the product is 100% Brand New and arrives in its original factory-sealed Allen Bradley packaging. We do not sell refurbished or used components.

• Which Removable Terminal Block (RTB) does this module require?

  Due to the high-density 32-point configuration, you must use a 36-pin RTB, specifically the 1756-TBCH or 1756-TBS6H. Note that the RTB is sold separately from the module.

• How does "Sourcing" differ from "Sinking" in this module?

  In a sourcing module like the 1756-IV32, the module provides the 24V DC to the input circuit. You must connect it to a device that "sinks" the current to ground (Common) to complete the circuit and register an "On" state.

• Can I mix different voltages between the two input groups?

  Yes. Because the module features group-to-group isolation, you can power each 16-point group from a separate 10-30V DC power source, providing flexibility for complex field wiring requirements.