Allen Bradley 1756-IN16 ControlLogix Digital AC Input Module

Product Overview

The Allen Bradley 1756-IN16 serves as a high-density discrete input interface for the ControlLogix platform. This module monitors and converts 24V AC signals from field devices—such as limit switches, pushbuttons, and proximity sensors—into logic levels usable by the controller. We supply this unit as 100% Brand New and Factory Original, ensuring peak electronic integrity and long-term stability in your automation rack.

Technical Specifications

The 1756-IN16 utilizes a robust circuit design to handle industrial AC voltage fluctuations:

Engineering Advantages

• Broad Voltage Tolerance: The module accommodates an input range of 10V to 30V AC. This flexibility allows the hardware to function reliably despite line voltage drops or fluctuations common in large-scale industrial plants.

• Integrated Noise Filtering: The 1756-IN16 incorporates onboard hardware filtering to reject high-frequency electrical noise. This prevents "nuisance" signals and false triggering caused by electromagnetic interference (EMI) from nearby motor starters or variable frequency drives.

• Chassis-Based Diagnostic Support: The module utilizes the ControlLogix producer/consumer technology to report point-level status and fault data. This allows engineers to identify wiring issues or signal loss directly through the Studio 5000 environment without manual probing.

• Simplified Field Wiring: This 16-point module optimizes space within the I/O rack. It utilizes a removable terminal block (RTB), which allows maintenance teams to replace the module without disconnecting individual field wires, significantly reducing Mean Time to Repair (MTTR).

FAQs

• Is this 1756-IN16 unit 100% Brand New?

  Yes. We guarantee this product is 100% Brand New and arrives in its original factory packaging. It has never been installed or used in a production environment, ensuring full lifespan for its internal optical isolators.

• Does the module require a specific Removable Terminal Block (RTB)?

  Yes. The 1756-IN16 requires either the 1756-TBNH or 1756-TBSH terminal block. You must order these separately as they do not come standard with the module itself.

• Can I use this module for DC input signals?

  No. The 1756-IN16 is specifically designed for AC voltage. Using DC signals may result in improper state detection or damage to the internal bridge rectification circuitry. For DC applications, please refer to the 1756-IB16 or 1756-IV16.

• How does the module handle signal debounce?

  The module features programmable input filter times. You can configure these settings in the controller software to match the mechanical characteristics of your field devices, effectively eliminating contact bounce issues.