1794-IA16 | Allen-Bradley | FLEX I/O 16-Point AC Digital Input Module

Product Overview

The Allen-Bradley 1794-IA16 functions as a high-density AC digital input module within the FLEX I/O 1794 family. This module interfaces 16 non-isolated 120V AC field signals to the industrial controller via a FLEX I/O adapter. It bridges the gap between field-level AC sensors—such as push buttons, limit switches, and proximity sensors—and the system backplane. We supply this unit as 100% Brand New and Original, ensuring your control architecture benefits from factory-fresh components and full technical longevity.

Technical Specifications

The 1794-IA16 integrates 16 input points into a compact, rail-mounted form factor:

Engineering Advantages

The 1794-IA16 solves common industrial infrastructure challenges with the following technical features:

• High-Density Small Footprint: By packing 16 AC inputs into a single module, the 1794-IA16 reduces the number of racks required. This significantly lowers enclosure costs and saves valuable DIN rail space in crowded control cabinets.

• Comprehensive Terminal Base Compatibility: This module works with a wide variety of terminal bases, including the 1794-TB3, 1794-TBN, and the 1794-TB3S spring-clamp version. This flexibility allows engineers to choose the termination style—screw or spring—that best suits the facility’s vibration profile.

• Real-Time Visual Diagnostics: 16 independent yellow LEDs provide immediate visual confirmation of the logic state for every input. Technicians can troubleshoot field-side wiring faults at a glance without utilizing a programming terminal.

• Robust Environmental Tolerance: The module withstands 30g of operating shock and 5g of vibration. These specifications ensure stable data acquisition in heavy-industrial zones where large motors or mechanical presses create significant mechanical stress.

FAQs

Does the 1794-IA16 require a specific keyswitch setting?

Yes. You must set the terminal base keyswitch to Position 8 before inserting the 1794-IA16. This mechanical interlock prevents the accidental insertion of low-voltage DC modules into a high-voltage AC base, protecting the hardware from electrical damage.

Can the 1794-IA16 handle 230V AC signals?

No. This module operates strictly within the 74V to 132V AC range. Applying 230V AC will exceed the 6.4-watt power dissipation limit and damage the internal circuitry. For 230V applications, utilize the 1794-IM8 or similar high-voltage modules.

Is this module isolated between the 16 input points?

The 1794-IA16 features non-isolated inputs. This means all 16 inputs share a common return path within the module. You must ensure all field devices connected to this module share the same AC neutral or return reference to avoid ground loops.

Is this unit shipped in its original Allen-Bradley packaging?

We guarantee that every 1794-IA16 unit is 100% Brand New and remains in its original factory-sealed packaging. This ensures the unit has zero previous installation time and meets all original manufacturer specifications.