1769-IA16 | Allen-Bradley | CompactLogix 16-Point AC Digital Input Module

Product Overview

The 1769-IA16 serves as a high-density discrete input interface for the Allen-Bradley CompactLogix and MicroLogix 1500 platforms. It monitors up to 16 independent 120V AC field signals from devices such as limit switches, float sensors, and pushbuttons. We provide this module in 100% Brand New condition, ensuring peak opto-isolation performance and long-term signal accuracy for your automation rack.

Technical Specifications

Engineering Advantages

• High-Density Signal Monitoring: The 16-point configuration maximizes I/O count while minimizing backplane footprint. This enables engineers to utilize smaller enclosures and reduces the overall hardware cost per point.

• Integrated Common Logic: The module features internally connected commons for all 16 inputs. This simplifies field wiring by reducing the number of external termination points and jumper wires required inside the control cabinet.

• Robust Signal Filtering: Built-in 20ms hardware delays effectively eliminate electrical "noise" and contact bounce common in industrial AC circuits. This ensures the controller receives clean, debounced data for stable logic execution.

• Simplified Maintenance: The removable terminal block (RTB) allows maintenance teams to replace the module without disconnecting individual field wires. This feature significantly slashes MTTR (Mean Time To Repair) during critical system updates.

FAQs

Does the 1769-IA16 support DC input signals?

No. This module specifically senses AC voltage levels (79-132V AC). Applying DC voltage to the inputs will fail to trigger the internal opto-couplers and may result in incorrect logic states or hardware damage.

What is the maximum number of 1769-IA16 modules I can add to a single rack?

The limit depends on your controller's power supply "Power Supply Distance Rating." The 1769-IA16 has a distance rating of 8, meaning it must sit within 8 slots of the 1769 power supply to maintain signal integrity and voltage levels.

How does the module handle high inrush currents from field devices?

The 1769-IA16 tolerates a maximum inrush current of up to 250 mA. This allows the module to safely interface with field devices that exhibit a momentary current spike upon contact closure without tripping internal protection.

Can I use this module with a MicroLogix 1500 controller?

Yes. The 1769-IA16 is fully compatible with the MicroLogix 1500 platform and the CompactLogix 1769 series. Simply configure the module in your RSLogix 500 or Studio 5000 I/O tree to begin communication.