Excellent PLC
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
| Parameter | Description |
|---|---|
| Product Name | Allen-Bradley 1771-IBN High True Input Module |
| Manufacturer | Allen-Bradley |
| Series | 1771 PLC-5 I/O System |
| Module Type | High-True Digital DC input module |
| Input Channels | 32 high-true inputs |
| Operating Voltage | 10–30 VDC |
| Backplane Current | 0.28 A @ 5 VDC |
| Installation Location | 1771 I/O chassis |
| Wiring Arm | 1771-WN |
| Dimensions | 165 x 51 x 89 mm |
| Weight | 0.45 kg |
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.
