Allen-Bradley 1756-IA16I ControlLogix Isolated AC Input Module

Overview

The Allen-Bradley 1756-IA16I is a ControlLogix isolated AC input module engineered for reliable monitoring and control in industrial automation systems. Equipped with 16 individually isolated inputs, it ensures safe signal separation and prevents cross-channel interference. The module operates within a broad AC voltage range, making it suitable for a variety of 120V AC applications.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)

• Model / Part Number: 1756-IA16I

• Product Type: ControlLogix Isolated Input Module

• Voltage Category: 120V AC, 50/60 Hz

• Operating Voltage Range: 74–132V AC

• Number of Inputs: 16, individually isolated

• Removable Terminal Blocks: Compatible with 1756-TBCH, 1756-TBS6H

• Power Dissipation (Max): 4.9 W @ 60°C (140°F)

• Isolation Voltage: 125V continuous; tested to 1200V AC for 2 seconds

• Mounting: DIN rail or panel mount within standard ControlLogix chassis

• Weight: 0.22 kg

Key Features

• 16 fully isolated AC input channels for accurate signal monitoring

• Compatible with standard ControlLogix terminal blocks for flexible installation

• High isolation rating to protect backplane and adjacent modules

• Low power consumption and compact 1-slot design for efficient chassis usage

Applications

• Monitoring 120V AC signals in control panels

• Industrial process automation requiring isolated input detection

• Integration into ControlLogix chassis for distributed control systems

FAQs

Q1: How many inputs does the 1756-IA16I support?
The module supports 16 individually isolated AC inputs for reliable monitoring.

Q2: What is the isolation voltage?
Rated at 125V continuous, and tested to 1200V AC for 2 seconds to ensure channel and backplane protection.

Q3: Which terminal blocks are compatible?
Removable blocks 1756-TBCH and 1756-TBS6H can be used for installation.