Allen-Bradley 1769-IQ16 CompactLogix Digital Input Module

Product Overview

The Allen-Bradley 1769-IQ16 is a high-performance 16-channel digital input module part of Rockwell Automation's CompactLogix 5370 series and Compact I/O system

. Designed for industrial automation applications, this module provides reliable acquisition of digital signals from sensors, switches, and other field devices in manufacturing, process control, and infrastructure automation systems. As a critical component in distributed control architectures, it enables seamless integration with Programmable Logic Controllers (PLCs) like CompactLogix and MicroLogix 1500, offering flexibility and performance in a compact form factor

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The 1769-IQ16 is engineered to operate in challenging industrial environments, delivering high reliability and ease of installation

. Its modular design allows for straightforward integration into existing systems, reducing wiring complexity and installation time. With support for multiple voltage ranges and robust communication protocols, this module serves as a versatile solution for diverse automation needs across industries

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Key Features and Capabilities

Input Configuration and Performance

The 1769-IQ16 features 16 discrete input channels designed for 24V DC signals (sinking/sourcing)

. It offers a wide operating voltage range from 10 to 30V DC at 30°C (86°F) and 10 to 26.4V DC at 60°C (140°F), ensuring compatibility with various industrial sensors and switches. The module's input channels are divided into two groups of eight channels each, allowing for flexible configuration and management

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The module exhibits fast response characteristics, with typical input delay times of 8 milliseconds for both OFF-to-ON and ON-to-OFF transitions

. This performance is critical for applications requiring precise timing and rapid response to input signal changes.

Communication and Compatibility

The 1769-IQ16 supports major industrial communication protocols including EtherNet/IP, DeviceNet, and ControlNet

. This compatibility ensures seamless integration into both new and existing automation networks, facilitating data exchange and control coordination. The module is designed for standard DIN rail mounting and is compatible with the 1769 series PLC backplane, as well as MicroLogix 1500 controllers when used with appropriate adapters

.

Protection and Safety Features

To ensure operational reliability, the module incorporates electrical isolation between channels and from the backplane (rated at 2500V AC)

. It provides noise immunity and surge protection with a maximum surge current capability of 250mA. The module's input impedance is nominally 3 kΩ, contributing to its stable operation in electrically noisy industrial environments

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Environmental Robustness

The module is designed to operate effectively in a temperature range of 0°C to 60°C (32°F to 140°F) and relative humidity levels of 5% to 95% (non-condensing)

. It can withstand vibration and shock common in industrial environments, ensuring reliable performance in challenging conditions

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Technical Specifications

The following table summarizes the key technical specifications of the Allen-Bradley 1769-IQ16 digital input module:

System Configuration and Installation

Hardware Integration

The 1769-IQ16 module is designed for easy installation on standard DIN rails or panel mounts

. Its compact dimensions (118 x 35 x 87 mm) allow for high-density arrangements, maximizing space utilization in control cabinets

. The module features removable terminal blocks that simplify wiring and maintenance procedures.

For proper installation, it is recommended to use wires between 22-14 AWG for solid core and 22-16 AWG for stranded wire

. The terminal screw torque should be maintained at 0.8 N·m (7 lb·in) to ensure reliable connections

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Power Requirements

The module operates on a 24V DC power supply and has a current consumption of 115mA at 5V DC (0.58W power dissipation)

. It is compatible with various Allen-Bradley power supplies, including 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. The module's power distance rating of 8 modules ensures stable operation when positioned within this range of the power supply

.

Software Configuration

The 1769-IQ16 is configured using Rockwell Automation's Studio 5000 Logix Designer or RSLogix 5000 software platforms

. These integrated development environments allow for parameter setting, monitoring, and diagnostics. Configuration includes setting input filter parameters, enabling diagnostic functions, and integrating the module into the broader control system architecture.

Applications

The 1769-IQ16 digital input module is suitable for a wide range of industrial automation applications:

• Manufacturing Automation: Monitoring sensors and switches on production lines, assembly machines, and robotic systems in automotive, electronics, and consumer goods industries

• .

• Material Handling Systems: Managing conveyors, sortation systems, and automated guided vehicles (AGVs) in warehouses and distribution centers

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• Process Control: Monitoring parameters like temperature, pressure, and flow in chemical, pharmaceutical, and food processing plants

• .

• Safety Systems: Connecting emergency stop buttons, safety door sensors, and other safety devices through its isolation design that enhances noise immunity

• .

• Infrastructure Automation: Integrating into building management systems for monitoring status of various equipment and devices

• .

Its 16 input channels and configurable characteristics make it ideal for applications requiring multiple signal acquisitions with reliable performance

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Comparison and Considerations

When selecting the 1769-IQ16 module, consider the following aspects:

• Input Requirements: The 24V DC input specification is standard for industrial applications; ensure compatibility with your sensor and switch voltages.

• Response Time Needs: The fast response time (8ms typical) makes it suitable for most industrial applications requiring quick signal recognition.

• Environmental Conditions: The operating temperature range (0-60°C) is adequate for most industrial environments; harsh conditions may require additional protection.

• System Compatibility: The module works with CompactLogix and MicroLogix 1500 controllers; verify compatibility with your existing system components

• .

• Power Considerations: Ensure adequate power supply capacity and adhere to the 8-module power distance rating for reliable operation

• .

For applications requiring different I/O configurations, Allen-Bradley offers other modules in the 1769 series, such as the 1769-IQ32 (32-point digital input module) and 1769-IF4 (analog input module).

Conclusion

The Allen-Bradley 1769-IQ16 CompactLogix Digital Input Module is a robust and versatile solution for industrial automation applications requiring reliable acquisition of digital signals

. Its 16-channel configuration, wide voltage range compatibility, and fast response characteristics make it suitable for diverse applications across manufacturing, process control, and infrastructure automation

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With high noise immunity, comprehensive protection features, and easy integration into existing control systems, the 1769-IQ16 helps improve operational efficiency and reduce downtime

. Its rugged design ensures reliable performance even in challenging industrial environments, making it a valuable component in modern automation systems

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For engineers and system integrators seeking a high-density input solution with proven reliability and seamless integration with Allen-Bradley controllers, the 1769-IQ16 represents an excellent choice that combines performance, flexibility, and durability characteristic of the Allen-Bradley brand

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