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Allen-Bradley 1771-IAD Digital Input Module for PLC-5 systems

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Allen-Bradley 1771-IAD PLC-5

by Allen-Bradley

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OverviewElevate the precision and dependability of your industrial processes with the Allen-Bradley 1771-IAD Digital Input Module. This robust unit is specifically engineered for seamless incorporation into PLC-5 programmable logic controller setups, delivering 16 high-performance discrete input channels. The 1771-IAD is designed to accept both 120V AC and 120V DC signals, providing outstanding adaptability for connecting diverse industrial sensors and control mechanisms. Its expansive operational voltage range guarantees steady and consistent functionality even amid minor voltage variations, making it an essential component for challenging industrial environments. Compatibility with the standard 1771-WH wiring arm simplifies both installation and maintenance, ensuring a streamlined setup and efficient field wiring. Rely on the Allen-Bradley 1771-IAD for the accuracy and responsiveness your PLC-5 systems demand for optimal control and data acquisition.Key Features Optimized PLC-5 System Integration: Specifically developed for use within Allen-Bradley PLC-5 chassis and programmable logic controller systems, ensuring peak performance and communication. 16 Adaptable Discrete Input Channels: Features 16 individual input points, providing ample capacity for monitoring multiple industrial sensors and control devices simultaneously. Universal 120V AC/DC Input Capability: Accommodates both 120V AC and 120V DC input signals, offering exceptional flexibility to integrate various industrial sensor types and power sources. Extended Operating Voltage Range (79-138V AC/DC): Engineered with a broad operating voltage tolerance from 79-138V AC and 79-138V DC, guaranteeing stable and reliable operation in environments with fluctuating power supplies. Simplified Field Wiring with 1771-WH: Employs the industry-standard 1771-WH wiring arm, facilitating quick, secure, and straightforward field wiring connections, thereby reducing installation time and potential errors. Robust Industrial Construction: Manufactured by Allen-Bradley, a leader in industrial automation, ensuring high durability and longevity in demanding industrial settings. Technical Specifications Product Type: Digital Input Module Catalog Number: 1771-IAD Series: 1771 (PLC-5) Number of Inputs: 16 Input Voltage: 120V AC/DC Operating Voltage Range: 79-138V AC, 79-138V DC Wiring Arm Compatibility: 1771-WH Applications Industrial Sensor Monitoring: Perfect for detecting the ON/OFF state of various industrial switches, pushbuttons, limit switches, and proximity sensors. Process Control and Automation: Crucial for integrating and monitoring discrete input devices within intricate process control and manufacturing automation systems. Motor Control and Status Indication: Utilized to monitor the operational status of motor starters, contactors, and other control elements. Building Management Systems: Applicable for monitoring status inputs within industrial building management systems and facility automation. Legacy System Upgrades and Maintenance: Ideal for sustaining or enhancing existing PLC-5 systems, ensuring continuous compatibility and dependable functionality. Why Choose This Model?Guaranteed PLC-5 Integration: Ensures seamless compatibility with your existing Allen-Bradley PLC-5 infrastructure, minimizing integration challenges and promoting smooth operation.Flexible Input Processing: The capability to accept both AC and DC 120V signals makes it highly adaptable to a diverse array of industrial applications and sensor types, reducing the need for multiple specialized modules.Dependable Performance: Allen-Bradley's reputation for quality, combined with the module's wide operating voltage range, guarantees robust and reliable performance even in harsh industrial conditions.Order NowUpgrade your industrial control systems with the Allen-Bradley 1771-IAD Digital Input Module. Visit our website or contact our sales team to place your order today!FAQWhat type of systems is the 1771-IAD module compatible with?The 1771-IAD module is specifically designed for seamless integration with Allen-Bradley PLC-5 programmable logic controller systems.How many input channels does this module provide?This module offers 16 individual discrete input channels for monitoring various industrial devices.Can the 1771-IAD handle different voltage inputs?Yes, it is designed to accept both 120V AC and 120V DC input signals, offering broad compatibility for different sensor types.What is the operating voltage range of the 1771-IAD?The module boasts a wide operating voltage tolerance, accepting 79-138V AC and 79-138V DC.Does this module simplify wiring?Yes, it utilizes the standard 1771-WH wiring arm to facilitate quick and straightforward field wiring connections.

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PRODUCT DETAILS

Allen-Bradley 1771-IAD PLC-5

Overview

This is a genuine Allen-Bradley component from the PLC-5 Platform (Legacy) family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside PLC-5 Platform (Legacy) installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the PLC-5 Platform (Legacy) family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Product Type: Digital Input Module
  • Catalog Number: 1771-IAD
  • Series: 1771 (PLC-5)
  • Number of Inputs: 16
  • Input Voltage: 120V AC/DC
  • Operating Voltage Range: 79-138V AC, 79-138V DC
  • Wiring Arm Compatibility: 1771-WH

Applications

  • Industrial Sensor Monitoring: Perfect for detecting the ON/OFF state of various industrial switches, pushbuttons, limit switches, and proximity sensors.
  • Process Control and Automation: Crucial for integrating and monitoring discrete input devices within intricate process control and manufacturing automation systems.
  • Motor Control and Status Indication: Utilized to monitor the operational status of motor starters, contactors, and other control elements.
  • Building Management Systems: Applicable for monitoring status inputs within industrial building management systems and facility automation.
  • Legacy System Upgrades and Maintenance: Ideal for sustaining or enhancing existing PLC-5 systems, ensuring continuous compatibility and dependable functionality.

Why Choose the 1771-IAD?

Guaranteed PLC-5 Integration: Ensures seamless compatibility with your existing Allen-Bradley PLC-5 infrastructure, minimizing integration challenges and promoting smooth operation.

Flexible Input Processing: The capability to accept both AC and DC 120V signals makes it highly adaptable to a diverse array of industrial applications and sensor types, reducing the need for multiple specialized modules.

Dependable Performance: Allen-Bradley's reputation for quality, combined with the module's wide operating voltage range, guarantees robust and reliable performance even in harsh industrial conditions.

Availability & Shipping

  • In stock: 1771-IAD ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 1771-IAD ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The 1771-IAD module is specifically designed for seamless integration with Allen-Bradley PLC-5 programmable logic controller systems.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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