Allen Bradley 1771-IBN/C High True Input Module

Product Introduction

The Allen-Bradley 1771-IBN/C High True Input Module is a high-density digital input module for the 1771 series PLC-5 automation systems from Allen-Bradley. It provides 32 high-true DC input channels designed to monitor discrete signals from field devices such as sensors, switches, and other control equipment. These signals are transmitted to the PLC processor for automated system control, real-time monitoring, and efficient management of industrial processes.

Featuring high-true input logic, the module ensures that a high voltage level is reliably interpreted as “on,” reducing the likelihood of misreading signals in noisy environments. Its compact form factor allows installation in a 1771 I/O chassis, while the 1771-WN wiring arm simplifies field connections.

This module is ideal for manufacturing automation, process control, and machine monitoring applications that require high-density input capability, fast signal processing, and reliable operation. Its combination of precise input logic, efficient backplane communication, and durable industrial design makes it suitable for complex automation systems where accuracy and speed are critical.

Product Specifications

Applications

● Industrial PLC-5 Control Systems
Monitors high-true DC input signals from multiple sensors and switches to enable precise automated control of industrial machinery and processes.

● Manufacturing Automation Equipment
Integrates numerous input devices in production lines, allowing real-time tracking of machine states, product flow, and operational efficiency.

● Process Control Facilities
Acquires high-true discrete signals in chemical, energy, and water treatment systems, supporting consistent process monitoring and safety control.

● Machine Automation Panels
Provides dense input channel monitoring for machinery, enabling rapid detection of operational changes and fault conditions.

● Large-Scale Signal Monitoring
Efficiently captures and communicates numerous input signals in compact modules, supporting complex automation systems with limited chassis space.

Advantages

● High Channel Density
Supports 32 high-true input channels, reducing the number of modules required while maintaining precise monitoring of all connected devices.

● Wide DC Voltage Support
Operates reliably over 10–30 VDC, ensuring compatibility with a broad range of industrial DC sensors and switches.

● High-True Input Logic
Guarantees accurate detection of “on” signals, minimizing misreads caused by voltage fluctuations or electrical noise.

● Fast Backplane Communication
Inputs are transmitted quickly and reliably to the PLC processor, allowing the system to respond immediately to changes in field conditions.

● Compact Modular Design
Fits into standard 1771 I/O chassis slots, providing high channel count in a small footprint and enabling flexible system expansion.

● Industrial Reliability
Built for consistent performance in harsh industrial environments, supporting long-term operation with minimal maintenance.

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