• Allen-Bradley 1756-IA16
  • Allen-Bradley 1756-IA16
  • Allen-Bradley 1756-IA16
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Allen-Bradley 1756-IA16 ControlLogix 16-Point 120V AC Digital Input Module

Allen-Bradley 1756-IA16 ControlLogix 16-Point 120V AC Digital Input Module

Description

The Allen-Bradley 1756-IA16 is a high-performance digital AC input module designed for the ControlLogix platform. This module provides 16 points of 120V AC input, organized into two groups of 8...

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SKU: 1756-IA16
Vendor: Allen-Bradley
Category: Digital Input Module
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Description

The Allen-Bradley 1756-IA16 is a high-performance digital AC input module designed for the ControlLogix platform. This module provides 16 points of 120V AC input, organized into two groups of 8 points each. It is engineered to interface field-side AC signals with the ControlLogix controller, facilitating reliable monitoring and control in industrial automation environments.

Features

  • 16-point digital AC input configuration.
  • Two isolated groups of 8 points each.
  • Operating voltage range of 74 to 132V AC (50/60 Hz).
  • Programmable input delay times of 9 or 18 milliseconds to filter signal noise.
  • Low power consumption with a backplane current draw of 100 mA at 5.1V DC.
  • Compatible with standard ControlLogix chassis and backplane systems.

Technical Specifications

Product Model 1756-IA16
Module Type Digital AC Input Module
Number of Inputs 16
Operating Voltage Range 74 to 132V AC
Input Delay Time 9 or 18 ms (Programmable)
Backplane Current (5.1V DC) 100 mA
Total Backplane Power 0.58 W
Minimum ON-state Current 5 mA @ 79V AC
Cyclic Update Time 200 us to 750 ms

Installation Guidelines

  • Ensure the ControlLogix chassis power is removed before inserting or removing the module.
  • Align the module carefully with the chassis guide rails and seat it firmly into the backplane connector.
  • Secure the module using the top and bottom mounting screws to ensure proper grounding and mechanical stability.
  • Use appropriate shielded cabling for field inputs to minimize electromagnetic interference (EMI).
  • Verify that the input voltage levels match the module specifications (74-132V AC) to prevent damage.
  • Maintain adequate clearance around the chassis for proper ventilation and cooling.

FAQ

What is the primary function of the 1756-IA16 module?

The 1756-IA16 is a digital AC input module used to detect 120V AC signals from field devices and convert them into digital data for processing by the ControlLogix controller.

Can the input delay be adjusted?

Yes, the module supports programmable input delay times of either 9 or 18 milliseconds, which can be configured via the software to help debounce signals or filter out electrical noise.

How are the inputs grouped on this module?

The 16 inputs are divided into two isolated groups, with 8 points per group, allowing for flexible wiring configurations in your control system.