Allen-Bradley 1756-IM16I | ControlLogix 16-Point Isolated AC Input Module

Overview

The Allen-Bradley 1756-IM16I is a high-performance AC input module designed for ControlLogix PLC systems. Featuring 16 individually isolated input points, it supports 159-265V AC signals, providing reliable and noise-resistant digital input processing for industrial automation applications.

With channel-to-channel isolation, this module minimizes ground loops and signal interference, ensuring accurate data acquisition in demanding environments such as factory automation, process control, and machine monitoring.

Key Features

• 16 Isolated AC Input Channels – Prevents crosstalk and ensures signal integrity
• Wide Operating Voltage Range: 159-265V AC
• Individually Isolated Inputs – Enhances noise immunity and prevents ground loops
• Fast Input Response Time: 8ms (On/Off delay max)
• High Immunity to Electrical Noise – Ideal for industrial environments
• Integrated Diagnostics and LED Indicators – Provides real-time input status monitoring
• 36-Pin Terminal Block Connection – Secure and stable wiring
• Compatible with ControlLogix Systems – Seamless integration with Allen-Bradley PLCs

Technical Specifications

• Model: 1756-IM16I
• Series: ControlLogix
• Number of Inputs: 16 (Individually Isolated)
• Input Voltage Range: 159-265V AC
• Input Frequency: 47-63Hz
• Input Impedance: 150 kΩ
• Maximum Off-State Voltage: 60V AC
• Signal Delay: 8ms (On/Off)
• Isolation Voltage: 2500V AC (Between channels)
• Backplane Current Draw: 100mA at 5.1V DC, 2.5mA at 24V DC
• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Mounting: Chassis Mount (ControlLogix System)
• Connector Type: 36-Pin Terminal Block

Applications

• Industrial Process Control – Provides high-reliability AC input monitoring
• Factory Automation – Ensures accurate data acquisition from field devices
• High-Voltage Digital Input Applications – Supports robust control in power-intensive environments
• Machine and Equipment Monitoring – Offers noise-resistant signal processing

Why Choose the Allen-Bradley 1756-IM16I?

• Isolated AC Inputs – Prevents interference and improves signal accuracy
• Seamless Integration with ControlLogix PLCs – Optimized for industrial automation
• High-Voltage Compatibility – Designed for demanding power control applications
• Reliable and Durable Design – Ensures long-term performance in harsh environments

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