Allen Bradley 1771-IBN High True Input Module

Product Introduction

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

The module’s high-true input logic ensures that voltage “high” signals are reliably recognized as active, reducing the chance of misreading signals in noisy industrial environments. The 1771-IBN is designed for compact installation in a 1771 I/O chassis and utilizes the 1771-WN wiring arm for streamlined field connections.

This module is widely used in manufacturing automation, process control, and machine monitoring applications where high-density, accurate DC signal acquisition is required. Its combination of high channel count, reliable backplane communication, and industrial-grade durability makes it ideal for complex automation systems requiring rapid, accurate input processing.

Product Specifications

Applications

● Industrial PLC-5 Control Systems
Monitors high-true DC input signals for precise control.

● Manufacturing Automation Equipment
Connects multiple sensors and switches for production line monitoring.

● Process Control Facilities
Acquires high-true discrete signals in chemical, energy, and water systems.

● Machine Automation Panels
Provides high-density input monitoring for machinery and equipment.

● Large-Scale Signal Monitoring
Efficiently captures multiple input channels in a compact module.

Advantages

● High Channel Density
Supports 32 high-true inputs in a single module.

● Wide DC Voltage Support
Operates reliably from 10–30 VDC.

● High-True Input Logic
Ensures precise detection of “on” signals.

● Fast Backplane Communication
Inputs are efficiently transmitted to the PLC processor.

● Compact Modular Design
Fits standard 1771 chassis slots while maintaining high channel count.

● Industrial Reliability
Stable performance in typical automation environments.

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