Allen Bradley 1746-IA16 — Comprehensive Technical Overview

1. Product Introduction

The Allen Bradley 1746-IA16 is a digital AC input module designed for modular PLC systems. It is used to interface field devices such as push buttons, limit switches, and sensors with the control system by converting AC voltage signals into logic-level inputs that the controller can process.

This module provides 16 input channels, allowing multiple field signals to be monitored simultaneously. Each input is electrically isolated to improve system reliability and protect the controller from electrical noise and transient disturbances commonly found in industrial environments.

The 1746-IA16 is installed in a chassis-based system and communicates with the processor through the backplane, making it a fundamental component for discrete input signal acquisition in automation systems.

2. Brand and Series

• Brand: Allen-Bradley
• Series: SLC 500 Series
• Product Type: Digital AC Input Module

The SLC 500 series is a modular PLC platform widely used in industrial automation. The 1746-IA16 plays a key role in gathering field-level input signals for control logic execution.

3. Product Parameters

Below is a detailed and structured parameter table for the 1746-IA16:

4. Product Applications

The 1746-IA16 is widely used in industrial automation systems where AC input signals need to be monitored:

• Push button and selector switch input monitoring
• Limit switch and position detection
• Machine status signal acquisition
• Conveyor system input detection
• Safety interlock signal monitoring
• Packaging and assembly equipment
• General-purpose discrete input applications

It is particularly suitable for systems using 120V AC field devices.

5. Product Advantages

High channel density
Provides 16 input channels in a single module, reducing space requirements.

Reliable AC signal detection
Designed specifically for AC input signals, ensuring stable performance.

Electrical isolation
Protects the system from electrical noise and voltage spikes.

Clear diagnostics
LED indicators allow quick identification of input status.

Easy integration
Seamlessly fits into modular PLC systems.

Robust industrial design
Suitable for long-term operation in demanding environments.

6. Recommended Models (Same Series or Related)

Below are 5 related models within the same SLC 500 series or similar I/O category:

These modules are commonly combined to build complete digital I/O systems.

7. Recommended Popular Models (Same Brand)

Below are 5 widely used models from the same brand in industrial automation systems: