1756IB16I Allen Bradley

Original price was: $715.00.Current price is: $550.00.

1 in stock



The 1756-IB16I is a digital input module manufactured by Allen-Bradley, part of the ControlLogix series. Here’s a detailed explanation of its features and functionalities:

General Description

  • Type: Digital Input Module
  • Series: ControlLogix
  • Manufacturer: Allen-Bradley (Rockwell Automation)


  • Inputs: 16 digital inputs
  • Voltage Category: 24V DC sinking
  • Input Current: The typical input current per point is 2.0 mA at 24V DC.
  • Input Delay Time: 0.5 ms (hardware delay) for both On and Off transitions.
  • Operating Voltage Range: 10-31.2V DC
  • Point-Level Diagnostics: Includes diagnostics for open wire detection and short-circuit detection.

Key Features

  1. LED Indicators: Each input point has an LED indicator that provides a visual status indication, which helps in troubleshooting and maintenance.
  2. Removable Terminal Blocks (RTBs): Allows for easy and quick replacement or maintenance of the module without disconnecting the field wiring.
  3. Electronic Protection: The module includes protection against short-circuits and overloads to prevent damage to the module and connected equipment.
  4. Cage Clamp Terminals: Ensures secure and reliable connections to field devices.


  • Factory Automation: Suitable for various automation tasks, including monitoring and control of input signals from sensors, switches, and other field devices.
  • Process Control: Widely used in industries such as manufacturing, chemical processing, and water treatment where precise control and monitoring of processes are crucial.
  • Safety Systems: Integrated into safety systems where reliable and fast response to input signals is necessary.

Installation and Configuration

  • Chassis Mounting: The module is installed in a ControlLogix chassis and can be configured using the RSLogix 5000 or Studio 5000 software.
  • Field Wiring: Connected through removable terminal blocks (RTBs), making wiring tasks more manageable and reducing downtime during maintenance.

Maintenance and Diagnostics

  • Status Indicators: LEDs on the module provide clear status information, aiding in quick diagnostics of input states.
  • Diagnostic Features: Enhanced diagnostic capabilities for detecting issues like open wires and short circuits, which helps in maintaining system reliability.


  • Communication: The 1756-IB16I module communicates with other modules and controllers within the ControlLogix system via the backplane bus.
  • Compatibility: Fully compatible with the ControlLogix range of processors and other I/O modules, making it versatile for use in various control system configurations.

In summary, the 1756-IB16I is a robust and reliable digital input module designed for industrial automation and control systems, offering advanced diagnostic features and ease of integration within the Allen-Bradley ControlLogix platform.