AB 1771-IBN/B Digital Input Module

Product Overview

The Allen-Bradley 1771-IBN/B is a digital input module designed for the Allen-Bradley PLC-5 family of programmable controllers. This module is used to interface with external devices that provide digital signals, 

such as switches, sensors, and other binary input devices. It offers a reliable and efficient method to capture and process these signals within the PLC system.  

Key Features and Specifications

• 32 Digital Inputs: The module provides 32 individual digital inputs, typically configured as sink inputs.

   

• Voltage Range: The inputs can accept a wide voltage range, usually from 10 to 30 VDC.

   

• Isolation: Each input is isolated from the others, providing enhanced noise immunity and protection against electrical faults.

   

• Mounting: The module is designed for mounting on a 1771 I/O rack.

• Wiring: The module uses a standard wiring arrangement, making installation and maintenance relatively easy.

Benefits

• Versatility: The 1771-IBN/B can be used in a wide range of applications due to its flexibility and reliability.

• Expansion: Multiple modules can be combined to increase the number of digital inputs in a system.

• Compatibility: The module is compatible with the Allen-Bradley PLC-5 family, a widely used platform in industrial automation.

   

• Durability: The module is designed to withstand harsh industrial environments.

Precautions

• Voltage Rating: Ensure that the voltage applied to the inputs does not exceed the specified maximum.

• Wiring: Follow the manufacturer's instructions carefully to avoid wiring errors that could damage the module or the PLC.

• Grounding: Proper grounding is essential to minimize noise and ensure reliable operation.

• Environment: Protect the module from excessive heat, humidity, and contaminants.

Applications

• Machine Control: Monitoring limit switches, pressure sensors, and other machine status indicators.

• Process Control: Acquiring digital signals from process sensors, such as level switches and flow meters.

• Safety Systems: Implementing safety interlocks and emergency stop functions.

• Data Acquisition: Collecting data from various sources for analysis and monitoring.

Additional Notes

• Series Variations: There may be slight variations in specifications between different series of the 1771-IBN module.

• Compatibility: Always verify compatibility with your specific PLC system and other components.

• Configuration: The module must be configured within the PLC program to define the function of each input.

For the most accurate and up-to-date information, please refer to the official technical documentation provided by Rockwell Automation.

Helpful Resources:

• Rockwell Automation Product Catalog

• Allen-Bradley PLC-5 System Manuals

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